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Olu Amey
2021-09-13 06:53:04 -04:00
commit 32eb3ab418
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system/Database/SQLSRV/Builder.php
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use Closure;
use CodeIgniter\Database\BaseBuilder;
use CodeIgniter\Database\Exceptions\DatabaseException;
use CodeIgniter\Database\Exceptions\DataException;
use CodeIgniter\Database\ResultInterface;
/**
* Builder for SQLSRV
*
* @todo auto check for TextCastToInt
* @todo auto check for InsertIndexValue
* @todo replace: delete index entries before insert
*/
class Builder extends BaseBuilder
{
/**
* ORDER BY random keyword
*
* @var array
*/
protected $randomKeyword = [
'NEWID()',
'RAND(%d)',
];
/**
* Quoted identifier flag
*
* Whether to use SQL-92 standard quoted identifier
* (double quotes) or brackets for identifier escaping.
*
* @var boolean
*/
protected $_quoted_identifier = true;
/**
* Handle increment/decrement on text
*
* @var boolean
*/
public $castTextToInt = true;
/**
* Handle IDENTITY_INSERT property/
*
* @var boolean
*/
public $keyPermission = false;
//--------------------------------------------------------------------
/**
* FROM tables
*
* Groups tables in FROM clauses if needed, so there is no confusion
* about operator precedence.
*
* @return string
*/
protected function _fromTables(): string
{
$from = [];
foreach ($this->QBFrom as $value)
{
$from[] = $this->getFullName($value);
}
return implode(', ', $from);
}
/**
* Truncate statement
*
* Generates a platform-specific truncate string from the supplied data
*
* If the database does not support the truncate() command,
* then this method maps to 'DELETE FROM table'
*
* @param string $table The table name
*
* @return string
*/
protected function _truncate(string $table): string
{
return 'TRUNCATE TABLE ' . $this->getFullName($table);
}
/**
* JOIN
*
* Generates the JOIN portion of the query
*
* @param string $table
* @param string $cond The join condition
* @param string $type The type of join
* @param boolean $escape Whether not to try to escape identifiers
*
* @return $this
*/
public function join(string $table, string $cond, string $type = '', bool $escape = null)
{
if ($type !== '')
{
$type = strtoupper(trim($type));
if (! in_array($type, $this->joinTypes, true))
{
$type = '';
}
else
{
$type .= ' ';
}
}
// Extract any aliases that might exist. We use this information
// in the protectIdentifiers to know whether to add a table prefix
$this->trackAliases($table);
if (! is_bool($escape))
{
$escape = $this->db->protectIdentifiers;
}
if (! $this->hasOperator($cond))
{
$cond = ' USING (' . ($escape ? $this->db->escapeIdentifiers($cond) : $cond) . ')';
}
elseif ($escape === false)
{
$cond = ' ON ' . $cond;
}
else
{
// Split multiple conditions
if (preg_match_all('/\sAND\s|\sOR\s/i', $cond, $joints, PREG_OFFSET_CAPTURE))
{
$conditions = [];
$joints = $joints[0];
array_unshift($joints, ['', 0]);
for ($i = count($joints) - 1, $pos = strlen($cond); $i >= 0; $i --)
{
$joints[$i][1] += strlen($joints[$i][0]); // offset
$conditions[$i] = substr($cond, $joints[$i][1], $pos - $joints[$i][1]);
$pos = $joints[$i][1] - strlen($joints[$i][0]);
$joints[$i] = $joints[$i][0];
}
ksort($conditions);
}
else
{
$conditions = [$cond];
$joints = [''];
}
$cond = ' ON ';
foreach ($conditions as $i => $condition)
{
$operator = $this->getOperator($condition);
$cond .= $joints[$i];
$cond .= preg_match("/(\(*)?([\[\]\w\.'-]+)" . preg_quote($operator) . '(.*)/i', $condition, $match) ? $match[1] . $this->db->protectIdentifiers($match[2]) . $operator . $this->db->protectIdentifiers($match[3]) : $condition;
}
}
// Do we want to escape the table name?
if ($escape === true)
{
$table = $this->db->protectIdentifiers($table, true, null, false);
}
// Assemble the JOIN statement
$this->QBJoin[] = $join = $type . 'JOIN ' . $this->getFullName($table) . $cond;
return $this;
}
/**
* Insert statement
*
* Generates a platform-specific insert string from the supplied data
* auto-enable
*
* @todo implement check for this instad static $insertKeyPermission
*
* @param string $table The table name
* @param array $keys The insert keys
* @param array $unescapedKeys The insert values
*
* @return string
*/
protected function _insert(string $table, array $keys, array $unescapedKeys): string
{
$fullTableName = $this->getFullName($table);
// insert statement
$statement = 'INSERT INTO ' . $fullTableName . ' (' . implode(',', $keys) . ') VALUES (' . implode(', ', $unescapedKeys) . ')';
return $this->keyPermission ? $this->addIdentity($fullTableName, $statement) : $statement;
}
/**
* Update statement
*
* Generates a platform-specific update string from the supplied data
*
* @param string $table the Table name
* @param array $values the Update data
*
* @return string
*/
protected function _update(string $table, array $values): string
{
$valstr = [];
foreach ($values as $key => $val)
{
$valstr[] = $key . ' = ' . $val;
}
$fullTableName = $this->getFullName($table);
$statement = 'UPDATE ' . (empty($this->QBLimit) ? '' : 'TOP(' . $this->QBLimit . ') ') . $fullTableName . ' SET '
. implode(', ', $valstr) . $this->compileWhereHaving('QBWhere') . $this->compileOrderBy();
return $this->keyPermission ? $this->addIdentity($fullTableName, $statement) : $statement;
}
/**
* Increments a numeric column by the specified value.
*
* @param string $column
* @param integer $value
*
* @return boolean
*/
public function increment(string $column, int $value = 1)
{
$column = $this->db->protectIdentifiers($column);
if ($this->castTextToInt)
{
$values = [$column => "CONVERT(VARCHAR(MAX),CONVERT(INT,CONVERT(VARCHAR(MAX), {$column})) + {$value})"];
}
else
{
$values = [$column => "{$column} + {$value}"];
}
$sql = $this->_update($this->QBFrom[0], $values);
return $this->db->query($sql, $this->binds, false);
}
/**
* Decrements a numeric column by the specified value.
*
* @param string $column
* @param integer $value
*
* @return boolean
*/
public function decrement(string $column, int $value = 1)
{
$column = $this->db->protectIdentifiers($column);
if ($this->castTextToInt)
{
$values = [$column => "CONVERT(VARCHAR(MAX),CONVERT(INT,CONVERT(VARCHAR(MAX), {$column})) - {$value})"];
}
else
{
$values = [$column => "{$column} + {$value}"];
}
$sql = $this->_update($this->QBFrom[0], $values);
return $this->db->query($sql, $this->binds, false);
}
/**
* Get full name of the table
*
* @param string $table
*
* @return string
*/
private function getFullName(string $table): string
{
$alias = '';
if (strpos($table, ' ') !== false)
{
$alias = explode(' ', $table);
$table = array_shift($alias);
$alias = ' ' . implode(' ', $alias);
}
if ($this->db->escapeChar === '"')
{
return '"' . $this->db->getDatabase() . '"."' . $this->db->schema . '"."' . str_replace('"', '', $table) . '"' . $alias;
}
return '[' . $this->db->getDatabase() . '].[' . $this->db->schema . '].[' . str_replace('"', '', $table) . ']' . str_replace('"', '', $alias);
}
/**
* Add permision statements for index value inserts
*
* @param string $fullTable full table name
* @param string $insert statement
*
* @return string
*/
private function addIdentity(string $fullTable, string $insert): string
{
return 'SET IDENTITY_INSERT ' . $fullTable . " ON\n" . $insert . "\nSET IDENTITY_INSERT " . $fullTable . ' OFF';
}
/**
* Local implementation of limit
*
* @param string $sql
* @param boolean $offsetIgnore
*
* @return string
*/
protected function _limit(string $sql, bool $offsetIgnore = false): string
{
if (empty($this->QBOrderBy))
{
$sql .= ' ORDER BY (SELECT NULL) ';
}
if ($offsetIgnore)
{
$sql .= ' OFFSET 0 ';
}
else
{
$sql .= is_int($this->QBOffset) ? ' OFFSET ' . $this->QBOffset : ' OFFSET 0 ';
}
return $sql .= ' ROWS FETCH NEXT ' . $this->QBLimit . ' ROWS ONLY ';
}
/**
* Replace
*
* Compiles a replace into string and runs the query
*
* @param array|null $set An associative array of insert values
*
* @return mixed
* @throws DatabaseException
*/
public function replace(array $set = null)
{
if ($set !== null)
{
$this->set($set);
}
if (empty($this->QBSet))
{
if (CI_DEBUG)
{
throw new DatabaseException('You must use the "set" method to update an entry.');
}
return false; // @codeCoverageIgnore
}
$table = $this->QBFrom[0];
$sql = $this->_replace($table, array_keys($this->QBSet), array_values($this->QBSet));
$this->resetWrite();
if ($this->testMode)
{
return $sql;
}
$this->db->simpleQuery('SET IDENTITY_INSERT ' . $this->db->escapeIdentifiers($table) . ' ON');
$result = $this->db->query($sql, $this->binds, false);
$this->db->simpleQuery('SET IDENTITY_INSERT ' . $this->db->escapeIdentifiers($table) . ' OFF');
return $result;
}
/**
* Replace statement
*
* Generates a platform-specific replace string from the supplied data
*
* on match delete and insert
*
* @param string $table The table name
* @param array $keys The insert keys
* @param array $values The insert values
*
* @return string
*/
protected function _replace(string $table, array $keys, array $values): string
{
// check whether the existing keys are part of the primary key.
// if so then use them for the "ON" part and exclude them from the $values and $keys
$pKeys = $this->db->getIndexData($table);
$keyFields = [];
foreach ($pKeys as $key)
{
if ($key->type === 'PRIMARY')
{
$keyFields = array_merge($keyFields, $key->fields);
}
if ($key->type === 'UNIQUE')
{
$keyFields = array_merge($keyFields, $key->fields);
}
}
// Get the unique field names
$escKeyFields = array_map(function (string $field): string {
return $this->db->protectIdentifiers($field);
}, array_values(array_unique($keyFields)));
// Get the binds
$binds = $this->binds;
array_walk($binds, function (&$item) {
$item = $item[0];
});
// Get the common field and values from the keys data and index fields
$common = array_intersect($keys, $escKeyFields);
$bingo = [];
foreach ($common as $v)
{
$k = array_search($v, $escKeyFields, true);
$bingo[$keyFields[$k]] = $binds[trim($values[$k], ':')];
}
// Querying existing data
$builder = $this->db->table($table);
foreach ($bingo as $k => $v)
{
$builder->where($k, $v);
}
$q = $builder->get()->getResult();
// Delete entries if we find them
if ($q !== [])
{
$delete = $this->db->table($table);
foreach ($bingo as $k => $v)
{
$delete->where($k, $v);
}
$delete->delete();
}
return sprintf('INSERT INTO %s (%s) VALUES (%s);', $this->getFullName($table), implode(',', $keys), implode(',', $values));
}
/**
* SELECT [MAX|MIN|AVG|SUM|COUNT]()
*
* Handle float return value
*
* @param string $select Field name
* @param string $alias
* @param string $type
*
* @return BaseBuilder
*/
protected function maxMinAvgSum(string $select = '', string $alias = '', string $type = 'MAX')
{
// int functions can be handled by parent
if ($type !== 'AVG')
{
return parent::maxMinAvgSum($select, $alias, $type);
}
if ($select === '')
{
throw DataException::forEmptyInputGiven('Select');
}
if (strpos($select, ',') !== false)
{
throw DataException::forInvalidArgument('Column name not separated by comma');
}
if ($alias === '')
{
$alias = $this->createAliasFromTable(trim($select));
}
$sql = $type . '( CAST( ' . $this->db->protectIdentifiers(trim($select)) . ' AS FLOAT ) ) AS ' . $this->db->escapeIdentifiers(trim($alias));
$this->QBSelect[] = $sql;
$this->QBNoEscape[] = null;
return $this;
}
/**
* Delete statement
*
* @param string $table The table name
*
* @return string
*/
protected function _delete(string $table): string
{
return 'DELETE' . (empty($this->QBLimit) ? '' : ' TOP (' . $this->QBLimit . ') ') . ' FROM ' . $this->getFullName($table) . $this->compileWhereHaving('QBWhere');
}
/**
* Delete
*
* Compiles a delete string and runs the query
*
* @param mixed $where The where clause
* @param integer $limit The limit clause
* @param boolean $resetData
*
* @return mixed
* @throws DatabaseException
*/
public function delete($where = '', int $limit = null, bool $resetData = true)
{
$table = $this->db->protectIdentifiers($this->QBFrom[0], true, null, false);
if ($where !== '')
{
$this->where($where);
}
if (empty($this->QBWhere))
{
if (CI_DEBUG)
{
throw new DatabaseException('Deletes are not allowed unless they contain a "where" or "like" clause.');
}
return false; // @codeCoverageIgnore
}
if (! empty($limit))
{
$this->QBLimit = $limit;
}
$sql = $this->_delete($table);
if ($resetData)
{
$this->resetWrite();
}
return $this->testMode ? $sql : $this->db->query($sql, $this->binds, false);
}
/**
* Compile the SELECT statement
*
* Generates a query string based on which functions were used.
*
* @param mixed $selectOverride
*
* @return string
*/
protected function compileSelect($selectOverride = false): string
{
// Write the "select" portion of the query
if ($selectOverride !== false)
{
$sql = $selectOverride;
}
else
{
$sql = (! $this->QBDistinct) ? 'SELECT ' : 'SELECT DISTINCT ';
// SQL Server can't work with select * if group by is specified
if (empty($this->QBSelect) && ! empty($this->QBGroupBy) && is_array($this->QBGroupBy))
{
foreach ($this->QBGroupBy as $field)
{
$this->QBSelect[] = is_array($field) ? $field['field'] : $field;
}
}
if (empty($this->QBSelect))
{
$sql .= '*';
}
else
{
// Cycle through the "select" portion of the query and prep each column name.
// The reason we protect identifiers here rather than in the select() function
// is because until the user calls the from() function we don't know if there are aliases
foreach ($this->QBSelect as $key => $val)
{
$noEscape = $this->QBNoEscape[$key] ?? null;
$this->QBSelect[$key] = $this->db->protectIdentifiers($val, false, $noEscape);
}
$sql .= implode(', ', $this->QBSelect);
}
}
// Write the "FROM" portion of the query
if (! empty($this->QBFrom))
{
$sql .= "\nFROM " . $this->_fromTables();
}
// Write the "JOIN" portion of the query
if (! empty($this->QBJoin))
{
$sql .= "\n" . implode("\n", $this->QBJoin);
}
$sql .= $this->compileWhereHaving('QBWhere')
. $this->compileGroupBy()
. $this->compileWhereHaving('QBHaving')
. $this->compileOrderBy(); // ORDER BY
// LIMIT
if ($this->QBLimit)
{
return $sql = $this->_limit($sql . "\n");
}
return $sql;
}
/**
* WHERE, HAVING
*
* @param string $qbKey 'QBWhere' or 'QBHaving'
* @param mixed $key
* @param mixed $value
* @param string $type
* @param boolean $escape
*
* @return $this
*/
protected function whereHaving(string $qbKey, $key, $value = null, string $type = 'AND ', bool $escape = null)
{
if (! is_array($key))
{
$key = [$key => $value];
}
// If the escape value was not set will base it on the global setting
if (! is_bool($escape))
{
$escape = $this->db->protectIdentifiers;
}
foreach ($key as $k => $v)
{
$prefix = empty($this->$qbKey) ? $this->groupGetType('') : $this->groupGetType($type);
if ($v !== null)
{
$op = $this->getOperator($k, true);
if (! empty($op))
{
$k = trim($k);
end($op);
$op = trim(current($op));
if (substr($k, -1 * strlen($op)) === $op)
{
$k = rtrim(strrev(preg_replace(strrev('/' . $op . '/'), strrev(''), strrev($k), 1)));
}
}
$bind = $this->setBind($k, $v, $escape);
if (empty($op))
{
$k .= ' =';
}
else
{
$k .= " $op";
}
if ($v instanceof Closure)
{
$builder = $this->cleanClone();
$v = '(' . str_replace("\n", ' ', $v($builder)->getCompiledSelect()) . ')';
}
else
{
$v = " :$bind:";
}
}
elseif (! $this->hasOperator($k) && $qbKey !== 'QBHaving')
{
// value appears not to have been set, assign the test to IS NULL
$k .= ' IS NULL';
}
elseif (preg_match('/\s*(!?=|<>|IS(?:\s+NOT)?)\s*$/i', $k, $match, PREG_OFFSET_CAPTURE))
{
$k = substr($k, 0, $match[0][1]) . ($match[1][0] === '=' ? ' IS NULL' : ' IS NOT NULL');
}
$this->{$qbKey}[] = [
'condition' => $prefix . $k . $v,
'escape' => $escape,
];
}
return $this;
}
/**
* Get
*
* Compiles the select statement based on the other functions called
* and runs the query
*
* @param integer $limit The limit clause
* @param integer $offset The offset clause
* @param boolean $reset Are we want to clear query builder values?
*
* @return ResultInterface
*/
public function get(int $limit = null, int $offset = 0, bool $reset = true)
{
if (! is_null($limit))
{
$this->limit($limit, $offset);
}
$result = $this->testMode ? $this->getCompiledSelect($reset) : $this->db->query($this->compileSelect(), $this->binds, false);
if ($reset)
{
$this->resetSelect();
// Clear our binds so we don't eat up memory
$this->binds = [];
}
return $result;
}
}
system/Database/SQLSRV/Connection.php
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use CodeIgniter\Database\BaseConnection;
use CodeIgniter\Database\Exceptions\DatabaseException;
use Exception;
use stdClass;
/**
* Connection for SQLSRV
*/
class Connection extends BaseConnection
{
/**
* Database driver
*
* @var string
*/
public $DBDriver = 'SQLSRV';
/**
* Database name
*
* @var string
*/
public $database;
/**
* Scrollable flag
*
* Determines what cursor type to use when executing queries.
*
* FALSE or SQLSRV_CURSOR_FORWARD would increase performance,
* but would disable num_rows() (and possibly insert_id())
*
* @var mixed
*/
public $scrollable;
/**
* Identifier escape character
*
* @var string
*/
public $escapeChar = '"';
/**
* Database schema
*
* @var string
*/
public $schema = 'dbo';
/**
* Quoted identifier flag
*
* Whether to use SQL-92 standard quoted identifier
* (double quotes) or brackets for identifier escaping.
*
* @var boolean
*/
protected $_quoted_identifier = true;
/**
* List of reserved identifiers
*
* Identifiers that must NOT be escaped.
*
* @var string[]
*/
protected $_reserved_identifiers = ['*'];
//--------------------------------------------------------------------
/**
* Class constructor
*
* @param array $params
* @return void
*/
public function __construct($params)
{
parent::__construct($params);
// This is only supported as of SQLSRV 3.0
if ($this->scrollable === null)
{
$this->scrollable = defined('SQLSRV_CURSOR_CLIENT_BUFFERED') ? SQLSRV_CURSOR_CLIENT_BUFFERED : false;
}
}
/**
* Connect to the database.
*
* @param boolean $persistent
*
* @throws DatabaseException
*
* @return mixed
*/
public function connect(bool $persistent = false)
{
$charset = in_array(strtolower($this->charset), ['utf-8', 'utf8'], true) ? 'UTF-8' : SQLSRV_ENC_CHAR;
$connection = [
'UID' => empty($this->username) ? '' : $this->username,
'PWD' => empty($this->password) ? '' : $this->password,
'Database' => $this->database,
'ConnectionPooling' => $persistent ? 1 : 0,
'CharacterSet' => $charset,
'Encrypt' => $this->encrypt === true ? 1 : 0,
'ReturnDatesAsStrings' => 1,
];
// If the username and password are both empty, assume this is a
// 'Windows Authentication Mode' connection.
if (empty($connection['UID']) && empty($connection['PWD']))
{
unset($connection['UID'], $connection['PWD']);
}
sqlsrv_configure('WarningsReturnAsErrors', 0);
$this->connID = sqlsrv_connect($this->hostname, $connection);
if ($this->connID !== false)
{
// Determine how identifiers are escaped
$query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
$query = $query->getResultObject();
$this->_quoted_identifier = empty($query) ? false : (bool) $query[0]->qi;
$this->escapeChar = ($this->_quoted_identifier) ? '"' : ['[', ']'];
return $this->connID;
}
$errors = [];
foreach (sqlsrv_errors(SQLSRV_ERR_ERRORS) as $error)
{
$errors[] = preg_replace('/(\[.+\]\[.+\](?:\[.+\])?)(.+)/', '$2', $error['message']);
}
throw new DatabaseException(implode("\n", $errors));
}
/**
* Keep or establish the connection if no queries have been sent for
* a length of time exceeding the server's idle timeout.
*
* @return void
*/
public function reconnect()
{
$this->close();
$this->initialize();
}
/**
* Close the database connection.
*
* @return void
*/
protected function _close()
{
sqlsrv_close($this->connID);
}
/**
* Platform-dependant string escape
*
* @param string $str
* @return string
*/
protected function _escapeString(string $str): string
{
return str_replace("'", "''", remove_invisible_characters($str, false));
}
/**
* Insert ID
*
* @return integer
*/
public function insertID(): int
{
return $this->query('SELECT SCOPE_IDENTITY() AS insert_id')->getRow()->insert_id ?? 0;
}
/**
* Generates the SQL for listing tables in a platform-dependent manner.
*
* @param boolean $prefixLimit
*
* @return string
*/
protected function _listTables(bool $prefixLimit = false): string
{
$sql = 'SELECT [TABLE_NAME] AS "name"'
. ' FROM [INFORMATION_SCHEMA].[TABLES] '
. ' WHERE '
. " [TABLE_SCHEMA] = '" . $this->schema . "' ";
if ($prefixLimit === true && $this->DBPrefix !== '')
{
$sql .= " AND [TABLE_NAME] LIKE '" . $this->escapeLikeString($this->DBPrefix) . "%' "
. sprintf($this->likeEscapeStr, $this->likeEscapeChar);
}
return $sql;
}
/**
* Generates a platform-specific query string so that the column names can be fetched.
*
* @param string $table
*
* @return string
*/
protected function _listColumns(string $table = ''): string
{
return 'SELECT [COLUMN_NAME] '
. ' FROM [INFORMATION_SCHEMA].[COLUMNS]'
. ' WHERE [TABLE_NAME] = ' . $this->escape($this->DBPrefix . $table)
. ' AND [TABLE_SCHEMA] = ' . $this->escape($this->schema);
}
/**
* Returns an array of objects with index data
*
* @param string $table
* @return stdClass[]
* @throws DatabaseException
*/
public function _indexData(string $table): array
{
$sql = 'EXEC sp_helpindex ' . $this->escape($table);
if (($query = $this->query($sql)) === false)
{
throw new DatabaseException(lang('Database.failGetIndexData'));
}
$query = $query->getResultObject();
$retVal = [];
foreach ($query as $row)
{
$obj = new stdClass();
$obj->name = $row->index_name;
$_fields = explode(',', trim($row->index_keys));
$obj->fields = array_map(function ($v) {
return trim($v);
}, $_fields);
if (strpos($row->index_description, 'primary key located on') !== false)
{
$obj->type = 'PRIMARY';
}
else
{
$obj->type = (strpos($row->index_description, 'nonclustered, unique') !== false) ? 'UNIQUE' : 'INDEX';
}
$retVal[$obj->name] = $obj;
}
return $retVal;
}
/**
* Returns an array of objects with Foreign key data
* referenced_object_id parent_object_id
*
* @param string $table
* @return stdClass[]
* @throws DatabaseException
*/
public function _foreignKeyData(string $table): array
{
$sql = 'SELECT '
. 'f.name as constraint_name, '
. 'OBJECT_NAME (f.parent_object_id) as table_name, '
. 'COL_NAME(fc.parent_object_id,fc.parent_column_id) column_name, '
. 'OBJECT_NAME(f.referenced_object_id) foreign_table_name, '
. 'COL_NAME(fc.referenced_object_id,fc.referenced_column_id) foreign_column_name '
. 'FROM '
. 'sys.foreign_keys AS f '
. 'INNER JOIN '
. 'sys.foreign_key_columns AS fc '
. 'ON f.OBJECT_ID = fc.constraint_object_id '
. 'INNER JOIN '
. 'sys.tables t '
. 'ON t.OBJECT_ID = fc.referenced_object_id '
. 'WHERE '
. 'OBJECT_NAME (f.parent_object_id) = ' . $this->escape($table);
if (($query = $this->query($sql)) === false)
{
throw new DatabaseException(lang('Database.failGetForeignKeyData'));
}
$query = $query->getResultObject();
$retVal = [];
foreach ($query as $row)
{
$obj = new stdClass();
$obj->constraint_name = $row->constraint_name;
$obj->table_name = $row->table_name;
$obj->column_name = $row->column_name;
$obj->foreign_table_name = $row->foreign_table_name;
$obj->foreign_column_name = $row->foreign_column_name;
$retVal[] = $obj;
}
return $retVal;
}
/**
* Disables foreign key checks temporarily.
*
* @return string
*/
protected function _disableForeignKeyChecks()
{
return 'EXEC sp_MSforeachtable "ALTER TABLE ? NOCHECK CONSTRAINT ALL"';
}
/**
* Enables foreign key checks temporarily.
*
* @return string
*/
protected function _enableForeignKeyChecks()
{
return 'EXEC sp_MSforeachtable "ALTER TABLE ? WITH CHECK CHECK CONSTRAINT ALL"';
}
/**
* Returns an array of objects with field data
*
* @param string $table
* @return stdClass[]
* @throws DatabaseException
*/
public function _fieldData(string $table): array
{
$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, COLUMN_DEFAULT
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME= ' . $this->escape(($table));
if (($query = $this->query($sql)) === false)
{
throw new DatabaseException(lang('Database.failGetFieldData'));
}
$query = $query->getResultObject();
$retVal = [];
for ($i = 0, $c = count($query); $i < $c; $i++)
{
$retVal[$i] = new stdClass();
$retVal[$i]->name = $query[$i]->COLUMN_NAME;
$retVal[$i]->type = $query[$i]->DATA_TYPE;
$retVal[$i]->default = $query[$i]->COLUMN_DEFAULT;
$retVal[$i]->max_length = $query[$i]->CHARACTER_MAXIMUM_LENGTH > 0 ? $query[$i]->CHARACTER_MAXIMUM_LENGTH : $query[$i]->NUMERIC_PRECISION;
}
return $retVal;
}
/**
* Begin Transaction
*
* @return boolean
*/
protected function _transBegin(): bool
{
return (bool) sqlsrv_begin_transaction($this->connID);
}
/**
* Commit Transaction
*
* @return boolean
*/
protected function _transCommit(): bool
{
return (bool) sqlsrv_commit($this->connID);
}
/**
* Rollback Transaction
*
* @return boolean
*/
protected function _transRollback(): bool
{
return (bool) sqlsrv_rollback($this->connID);
}
/**
* Returns the last error code and message.
* Must return this format: ['code' => string|int, 'message' => string]
* intval(code) === 0 means "no error".
*
* @return array<string,string|int>
*/
public function error(): array
{
$error = [
'code' => '00000',
'message' => '',
];
$sqlsrvErrors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
if (! is_array($sqlsrvErrors))
{
return $error;
}
$sqlsrvError = array_shift($sqlsrvErrors);
if (isset($sqlsrvError['SQLSTATE']))
{
$error['code'] = isset($sqlsrvError['code']) ? $sqlsrvError['SQLSTATE'] . '/' . $sqlsrvError['code'] : $sqlsrvError['SQLSTATE'];
}
elseif (isset($sqlsrvError['code']))
{
$error['code'] = $sqlsrvError['code'];
}
if (isset($sqlsrvError['message']))
{
$error['message'] = $sqlsrvError['message'];
}
return $error;
}
/**
* Returns the total number of rows affected by this query.
*
* @return integer
*/
public function affectedRows(): int
{
return sqlsrv_rows_affected($this->resultID);
}
/**
* Select a specific database table to use.
*
* @param string|null $databaseName
*
* @return mixed
*/
public function setDatabase(string $databaseName = null)
{
if (empty($databaseName))
{
$databaseName = $this->database;
}
if (empty($this->connID))
{
$this->initialize();
}
if ($this->execute('USE ' . $this->_escapeString($databaseName)))
{
$this->database = $databaseName;
$this->dataCache = [];
return true;
}
return false;
}
/**
* Executes the query against the database.
*
* @param string $sql
*
* @return mixed
*/
public function execute(string $sql)
{
$stmt = ($this->scrollable === false || $this->isWriteType($sql)) ?
sqlsrv_query($this->connID, $sql) :
sqlsrv_query($this->connID, $sql, [], ['Scrollable' => $this->scrollable]);
if ($stmt === false)
{
$error = $this->error();
log_message('error', $error['message']);
if ($this->DBDebug)
{
throw new Exception($error['message']);
}
}
return $stmt;
}
/**
* Returns the last error encountered by this connection.
*
* @return mixed
*/
public function getError()
{
$error = [
'code' => '00000',
'message' => '',
];
$sqlsrvErrors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
if (! is_array($sqlsrvErrors))
{
return $error;
}
$sqlsrvError = array_shift($sqlsrvErrors);
if (isset($sqlsrvError['SQLSTATE']))
{
$error['code'] = isset($sqlsrvError['code']) ? $sqlsrvError['SQLSTATE'] . '/' . $sqlsrvError['code'] : $sqlsrvError['SQLSTATE'];
}
elseif (isset($sqlsrvError['code']))
{
$error['code'] = $sqlsrvError['code'];
}
if (isset($sqlsrvError['message']))
{
$error['message'] = $sqlsrvError['message'];
}
return $error;
}
/**
* The name of the platform in use (MySQLi, mssql, etc)
*
* @return string
*/
public function getPlatform(): string
{
return $this->DBDriver;
}
/**
* Returns a string containing the version of the database being used.
*
* @return string
*/
public function getVersion(): string
{
if (isset($this->dataCache['version']))
{
return $this->dataCache['version'];
}
if (! $this->connID || empty($info = sqlsrv_server_info($this->connID)))
{
$this->initialize();
}
return isset($info['SQLServerVersion']) ? $this->dataCache['version'] = $info['SQLServerVersion'] : false;
}
// --------------------------------------------------------------------
/**
* Determines if a query is a "write" type.
*
* Overrides BaseConnection::isWriteType, adding additional read query types.
*
* @param string $sql An SQL query string
* @return boolean
*/
public function isWriteType($sql): bool
{
if (preg_match('/^\s*"?(EXEC\s*sp_rename)\s/i', $sql))
{
return true;
}
return parent::isWriteType($sql);
}
// --------------------------------------------------------------------
}
system/Database/SQLSRV/Forge.php
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use CodeIgniter\Database\Forge as BaseForge;
/**
* Forge for SQLSRV
*/
class Forge extends BaseForge
{
/**
* DROP CONSTRAINT statement
*
* @var string
*/
protected $dropConstraintStr = 'ALTER TABLE %s DROP CONSTRAINT %s';
/**
* CREATE DATABASE IF statement
*
* @todo missing charset, collat & check for existent
*
* @var string
*/
protected $createDatabaseIfStr = "DECLARE @DBName VARCHAR(255) = '%s'\nDECLARE @SQL VARCHAR(max) = 'IF DB_ID( ''' + @DBName + ''' ) IS NULL CREATE DATABASE ' + @DBName\nEXEC( @SQL )";
/**
* CREATE DATABASE IF statement
*
* @todo missing charset & collat
*
* @var string
*/
protected $createDatabaseStr = 'CREATE DATABASE %s ';
/**
* CHECK DATABASE EXIST statement
*
* @var string
*/
protected $checkDatabaseExistStr = 'IF DB_ID( %s ) IS NOT NULL SELECT 1';
/**
* RENAME TABLE statement
*
* While the below statement would work, it returns an error.
* Also MS recommends dropping and dropping and re-creating the table.
*
* @see https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp-rename-transact-sql?view=sql-server-2017
* 'EXEC sp_rename %s , %s ;'
*
* @var string
*/
protected $renameTableStr = 'EXEC sp_rename %s , %s ;';
/**
* UNSIGNED support
*
* @var array
*/
protected $unsigned = [
'TINYINT' => 'SMALLINT',
'SMALLINT' => 'INT',
'INT' => 'BIGINT',
'REAL' => 'FLOAT',
];
/**
* CREATE TABLE IF statement
*
* @var string
*/
protected $createTableIfStr = "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE";
/**
* CREATE TABLE statement
*
* @var string
*/
protected $createTableStr = "%s %s (%s\n) ";
/**
* DROP TABLE IF statement
*
* @var string
*/
protected $_drop_table_if = "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE";
//--------------------------------------------------------------------
/**
* CREATE TABLE attributes
*
* @param array $attributes Associative array of table attributes
* @return string
*/
protected function _createTableAttributes(array $attributes): string
{
return '';
}
/**
* ALTER TABLE
*
* @param string $alterType ALTER type
* @param string $table Table name
* @param mixed $field Column definition
*
* @return string|string[]|false
*/
protected function _alterTable(string $alterType, string $table, $field)
{
if ($alterType === 'ADD')
{
return parent::_alterTable($alterType, $table, $field);
}
// Handle DROP here
if ($alterType === 'DROP')
{
// check if fields are part of any indexes
$indexData = $this->db->getIndexData($table);
foreach ($indexData as $index)
{
if (is_string($field))
{
$field = explode(',', $field);
}
$fld = array_intersect($field, $index->fields);
// Drop index if field is part of an index
if (! empty($fld))
{
$this->_dropIndex($table, $index);
}
}
$sql = 'ALTER TABLE [' . $table . '] DROP ';
$fields = array_map(function ($item) {
return 'COLUMN [' . trim($item) . ']';
}, (array) $field);
return $sql .= implode(',', $fields);
}
$sql = 'ALTER TABLE ' . $this->db->escapeIdentifiers($table);
$sqls = [];
foreach ($field as $data)
{
if ($data['_literal'] !== false)
{
return false;
}
if (isset($data['type']))
{
$sqls[] = $sql . ' ALTER COLUMN ' . $this->db->escapeIdentifiers($data['name'])
. " {$data['type']}{$data['length']}";
}
if (! empty($data['default']))
{
$sqls[] = $sql . ' ALTER COLUMN ADD CONSTRAINT ' . $this->db->escapeIdentifiers($data['name']) . '_def'
. " DEFAULT {$data['default']} FOR " . $this->db->escapeIdentifiers($data['name']);
}
if (isset($data['null']))
{
$sqls[] = $sql . ' ALTER COLUMN ' . $this->db->escapeIdentifiers($data['name'])
. ($data['null'] === true ? ' DROP' : '') . " {$data['type']}{$data['length']} NOT NULL";
}
if (! empty($data['comment']))
{
$sqls[] = 'EXEC sys.sp_addextendedproperty '
. "@name=N'Caption', @value=N'" . $data['comment'] . "' , "
. "@level0type=N'SCHEMA',@level0name=N'" . $this->db->schema . "', "
. "@level1type=N'TABLE',@level1name=N'" . $this->db->escapeIdentifiers($table) . "', "
. "@level2type=N'COLUMN',@level2name=N'" . $this->db->escapeIdentifiers($data['name']) . "'";
}
if (! empty($data['new_name']))
{
// EXEC sp_rename '[dbo].[db_misc].[value]', 'valueasdasd', 'COLUMN';
$sqls[] = "EXEC sp_rename '[" . $this->db->schema . '].[' . $table . '].[' . $data['name'] . "]' , '" . $data['new_name'] . "', 'COLUMN';";
}
}
return $sqls;
}
//--------------------------------------------------------------------
/**
* Drop index for table
*
* @param string $table
* @param object $indexData
*
* @return mixed
*/
protected function _dropIndex(string $table, object $indexData)
{
if ($indexData->type === 'PRIMARY')
{
$sql = 'ALTER TABLE [' . $this->db->schema . '].[' . $table . '] DROP [' . $indexData->name . ']';
}
else
{
$sql = 'DROP INDEX [' . $indexData->name . '] ON [' . $this->db->schema . '].[' . $table . ']';
}
return $this->db->simpleQuery($sql);
}
/**
* Process column
*
* @param array $field
* @return string
*/
protected function _processColumn(array $field): string
{
return $this->db->escapeIdentifiers($field['name'])
. (empty($field['new_name']) ? '' : ' ' . $this->db->escapeIdentifiers($field['new_name']))
. ' ' . $field['type'] . $field['length']
. $field['default']
. $field['null']
. $field['auto_increment']
. '' // (empty($field['comment']) ? '' : ' COMMENT ' . $field['comment'])
. $field['unique'];
}
/**
* Process foreign keys
*
* @param string $table Table name
*
* @return string
*/
protected function _processForeignKeys(string $table): string
{
$sql = '';
$allowActions = [
'CASCADE',
'SET NULL',
'NO ACTION',
'RESTRICT',
'SET DEFAULT',
];
if ($this->foreignKeys !== [])
{
foreach ($this->foreignKeys as $field => $fkey)
{
$nameIndex = $table . '_' . $field . '_foreign';
$sql .= ",\n\t CONSTRAINT " . $this->db->escapeIdentifiers($nameIndex)
. ' FOREIGN KEY (' . $this->db->escapeIdentifiers($field) . ') '
. ' REFERENCES ' . $this->db->escapeIdentifiers($this->db->getPrefix() . $fkey['table']) . ' (' . $this->db->escapeIdentifiers($fkey['field']) . ')';
if ($fkey['onDelete'] !== false && in_array($fkey['onDelete'], $allowActions, true))
{
$sql .= ' ON DELETE ' . $fkey['onDelete'];
}
if ($fkey['onUpdate'] !== false && in_array($fkey['onUpdate'], $allowActions, true))
{
$sql .= ' ON UPDATE ' . $fkey['onUpdate'];
}
}
}
return $sql;
}
/**
* Process primary keys
*
* @param string $table Table name
*
* @return string
*/
protected function _processPrimaryKeys(string $table): string
{
for ($i = 0, $c = count($this->primaryKeys); $i < $c; $i++)
{
if (! isset($this->fields[$this->primaryKeys[$i]]))
{
unset($this->primaryKeys[$i]);
}
}
if ($this->primaryKeys !== [])
{
$sql = ",\n\tCONSTRAINT " . $this->db->escapeIdentifiers('pk_' . $table)
. ' PRIMARY KEY(' . implode(', ', $this->db->escapeIdentifiers($this->primaryKeys)) . ')';
}
return $sql ?? '';
}
/**
* Field attribute TYPE
*
* Performs a data type mapping between different databases.
*
* @param array $attributes
*
* @return void
*/
protected function _attributeType(array &$attributes)
{
// Reset field lengths for data types that don't support it
if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== false)
{
$attributes['CONSTRAINT'] = null;
}
switch (strtoupper($attributes['TYPE']))
{
case 'MEDIUMINT':
$attributes['TYPE'] = 'INTEGER';
$attributes['UNSIGNED'] = false;
break;
case 'INTEGER':
$attributes['TYPE'] = 'INT';
break;
case 'ENUM':
$attributes['TYPE'] = 'TEXT';
$attributes['CONSTRAINT'] = null;
break;
/* case 'DATETIME':
$attributes['TYPE'] = 'TIMESTAMP';
break; */
case 'TIMESTAMP':
$attributes['TYPE'] = 'DATETIME';
break;
default:
break;
}
}
/**
* Field attribute AUTO_INCREMENT
*
* @param array $attributes
* @param array $field
*
* @return void
*/
protected function _attributeAutoIncrement(array &$attributes, array &$field)
{
if (! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === true && stripos($field['type'], 'INT') !== false)
{
$field['auto_increment'] = ' IDENTITY(1,1)';
}
}
/**
* Drop Table
*
* Generates a platform-specific DROP TABLE string
*
* @todo Support for cascade
*
* @param string $table Table name
* @param boolean $ifExists Whether to add an IF EXISTS condition
* @param boolean $cascade
*
* @return string
*/
protected function _dropTable(string $table, bool $ifExists, bool $cascade): string
{
$sql = 'DROP TABLE';
if ($ifExists)
{
$sql .= ' IF EXISTS ';
}
$table = ' [' . $this->db->database . '].[' . $this->db->schema . '].[' . $table . '] ';
$sql .= $table;
if ($cascade)
{
$sql .= '';
}
return $sql;
}
}
system/Database/SQLSRV/PreparedQuery.php
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use BadMethodCallException;
use CodeIgniter\Database\BasePreparedQuery;
use Exception;
/**
* Prepared query for Postgre
*/
class PreparedQuery extends BasePreparedQuery
{
/**
* Parameters array used to store the dynamic variables.
*
* @var array
*/
protected $parameters = [];
/**
* The result boolean from a sqlsrv_execute.
*
* @var boolean
*/
protected $result;
/**
* Prepares the query against the database, and saves the connection
* info necessary to execute the query later.
*
* NOTE: This version is based on SQL code. Child classes should
* override this method.
*
* @param string $sql
* @param array $options Options takes an associative array;
*
* @return mixed
* @throws Exception
*/
public function _prepare(string $sql, array $options = [])
{
/* Prepare parameters for the query */
$queryString = $this->getQueryString();
$parameters = $this->parameterize($queryString);
/* Prepare the query */
$this->statement = sqlsrv_prepare($this->db->connID, $sql, $parameters);
if (! $this->statement)
{
$info = $this->db->error();
$this->errorCode = $info['code'];
$this->errorString = $info['message'];
}
return $this;
}
/**
* Takes a new set of data and runs it against the currently
* prepared query. Upon success, will return a Results object.
*
* @param array $data
*
* @return boolean
*/
public function _execute(array $data): bool
{
if (! isset($this->statement))
{
throw new BadMethodCallException('You must call prepare before trying to execute a prepared statement.');
}
foreach ($data as $key => $value)
{
$this->parameters[$key] = $value;
}
$this->result = sqlsrv_execute($this->statement);
return (bool) $this->result;
}
/**
* Returns the result object for the prepared query.
*
* @return mixed
*/
public function _getResult()
{
return $this->result;
}
/**
* Handle parameters
*
* @param string $queryString
*
* @return array
*/
protected function parameterize(string $queryString): array
{
$numberOfVariables = substr_count($queryString, '?');
$params = [];
for ($c = 0; $c < $numberOfVariables; $c++)
{
$this->parameters[$c] = null;
$params[] = &$this->parameters[$c];
}
return $params;
}
}
system/Database/SQLSRV/Result.php
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use CodeIgniter\Database\BaseResult;
use CodeIgniter\Entity\Entity;
use stdClass;
/**
* Result for SQLSRV
*/
class Result extends BaseResult
{
//--------------------------------------------------------------------
/**
* Gets the number of fields in the result set.
*
* @return integer
*/
public function getFieldCount(): int
{
return @sqlsrv_num_fields($this->resultID);
}
/**
* Generates an array of column names in the result set.
*
* @return array
*/
public function getFieldNames(): array
{
$fieldNames = [];
foreach (sqlsrv_field_metadata($this->resultID) as $field)
{
$fieldNames[] = $field['Name'];
}
return $fieldNames;
}
/**
* Generates an array of objects representing field meta-data.
*
* @return array
*/
public function getFieldData(): array
{
static $dataTypes = [
SQLSRV_SQLTYPE_BIGINT => 'bigint',
SQLSRV_SQLTYPE_BIT => 'bit',
SQLSRV_SQLTYPE_CHAR => 'char',
SQLSRV_SQLTYPE_DATE => 'date',
SQLSRV_SQLTYPE_DATETIME => 'datetime',
SQLSRV_SQLTYPE_DATETIME2 => 'datetime2',
SQLSRV_SQLTYPE_DATETIMEOFFSET => 'datetimeoffset',
SQLSRV_SQLTYPE_DECIMAL => 'decimal',
SQLSRV_SQLTYPE_FLOAT => 'float',
SQLSRV_SQLTYPE_IMAGE => 'image',
SQLSRV_SQLTYPE_INT => 'int',
SQLSRV_SQLTYPE_MONEY => 'money',
SQLSRV_SQLTYPE_NCHAR => 'nchar',
SQLSRV_SQLTYPE_NUMERIC => 'numeric',
SQLSRV_SQLTYPE_NVARCHAR => 'nvarchar',
SQLSRV_SQLTYPE_NTEXT => 'ntext',
SQLSRV_SQLTYPE_REAL => 'real',
SQLSRV_SQLTYPE_SMALLDATETIME => 'smalldatetime',
SQLSRV_SQLTYPE_SMALLINT => 'smallint',
SQLSRV_SQLTYPE_SMALLMONEY => 'smallmoney',
SQLSRV_SQLTYPE_TEXT => 'text',
SQLSRV_SQLTYPE_TIME => 'time',
SQLSRV_SQLTYPE_TIMESTAMP => 'timestamp',
SQLSRV_SQLTYPE_TINYINT => 'tinyint',
SQLSRV_SQLTYPE_UNIQUEIDENTIFIER => 'uniqueidentifier',
SQLSRV_SQLTYPE_UDT => 'udt',
SQLSRV_SQLTYPE_VARBINARY => 'varbinary',
SQLSRV_SQLTYPE_VARCHAR => 'varchar',
SQLSRV_SQLTYPE_XML => 'xml',
];
$retVal = [];
foreach (sqlsrv_field_metadata($this->resultID) as $i => $field)
{
$retVal[$i] = new stdClass();
$retVal[$i]->name = $field['Name'];
$retVal[$i]->type = $field['Type'];
$retVal[$i]->type_name = $dataTypes[$field['Type']] ?? null;
$retVal[$i]->max_length = $field['Size'];
}
return $retVal;
}
/**
* Frees the current result.
*
* @return void
*/
public function freeResult()
{
if (is_resource($this->resultID))
{
sqlsrv_free_stmt($this->resultID);
$this->resultID = false;
}
}
/**
* Moves the internal pointer to the desired offset. This is called
* internally before fetching results to make sure the result set
* starts at zero.
*
* @param integer $n
*
* @return mixed
*/
public function dataSeek(int $n = 0)
{
if ($n > 0)
{
for ($i = 0; $i < $n; $i++)
{
if (sqlsrv_fetch($this->resultID) === false)
{
return false;
}
}
}
return true;
}
/**
* Returns the result set as an array.
*
* Overridden by driver classes.
*
* @return mixed
*/
protected function fetchAssoc()
{
return sqlsrv_fetch_array($this->resultID, SQLSRV_FETCH_ASSOC);
}
/**
* Returns the result set as an object.
*
* Overridden by child classes.
*
* @param string $className
*
* @return object|boolean|Entity
*/
protected function fetchObject(string $className = 'stdClass')
{
if (is_subclass_of($className, Entity::class))
{
return empty($data = $this->fetchAssoc()) ? false : (new $className())->setAttributes($data);
}
return sqlsrv_fetch_object($this->resultID, $className);
}
//--------------------------------------------------------------------
/**
* Returns the number of rows in the resultID (i.e., SQLSRV query result resource)
*
* @return integer Returns the number of rows retrieved on success
*/
public function getNumRows(): int
{
if (! is_int($this->numRows))
{
$this->numRows = sqlsrv_num_rows($this->resultID);
}
return $this->numRows;
}
//--------------------------------------------------------------------
}
system/Database/SQLSRV/Utils.php
+49
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<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CodeIgniter\Database\SQLSRV;
use CodeIgniter\Database\BaseUtils;
use CodeIgniter\Database\Exceptions\DatabaseException;
/**
* Utils for SQLSRV
*/
class Utils extends BaseUtils
{
/**
* List databases statement
*
* @var string
*/
protected $listDatabases = 'EXEC sp_helpdb'; // Can also be: EXEC sp_databases
/**
* OPTIMIZE TABLE statement
*
* @var string
*/
protected $optimizeTable = 'ALTER INDEX all ON %s REORGANIZE';
//--------------------------------------------------------------------
/**
* Platform dependent version of the backup function.
*
* @param array|null $prefs
*
* @return mixed
*/
public function _backup(array $prefs = null)
{
throw new DatabaseException('Unsupported feature of the database platform you are using.');
}
}