-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');\r
-/**\r
- * CodeIgniter\r
- *\r
- * An open source application development framework for PHP 4.3.2 or newer\r
- *\r
- * @package CodeIgniter\r
- * @author ExpressionEngine Dev Team\r
- * @copyright Copyright (c) 2008, EllisLab, Inc.\r
- * @license http://codeigniter.com/user_guide/license.html\r
- * @link http://codeigniter.com\r
- * @since Version 1.0\r
- * @filesource\r
- */\r
-\r
-// ------------------------------------------------------------------------\r
-\r
-/**\r
- * MS SQL Database Adapter Class\r
- *\r
- * Note: _DB is an extender class that the app controller\r
- * creates dynamically based on whether the active record\r
- * class is being used or not.\r
- *\r
- * @package CodeIgniter\r
- * @subpackage Drivers\r
- * @category Database\r
- * @author ExpressionEngine Dev Team\r
- * @link http://codeigniter.com/user_guide/database/\r
- */\r
-class CI_DB_mssql_driver extends CI_DB {\r
-\r
- var $dbdriver = 'mssql';\r
- \r
- // The character used for escaping\r
- var $_escape_char = '';\r
- /**\r
- * The syntax to count rows is slightly different across different\r
- * database engines, so this string appears in each driver and is\r
- * used for the count_all() and count_all_results() functions.\r
- */\r
- var $_count_string = "SELECT COUNT(*) AS ";\r
- var $_random_keyword = ' ASC'; // not currently supported\r
-\r
- /**\r
- * Non-persistent database connection\r
- *\r
- * @access private called by the base class\r
- * @return resource\r
- */ \r
- function db_connect()\r
- {\r
- if ($this->port != '')\r
- {\r
- $this->hostname .= ','.$this->port;\r
- }\r
-\r
- return @mssql_connect($this->hostname, $this->username, $this->password);\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Persistent database connection\r
- *\r
- * @access private called by the base class\r
- * @return resource\r
- */ \r
- function db_pconnect()\r
- {\r
- if ($this->port != '')\r
- {\r
- $this->hostname .= ','.$this->port;\r
- }\r
-\r
- return @mssql_pconnect($this->hostname, $this->username, $this->password);\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Select the database\r
- *\r
- * @access private called by the base class\r
- * @return resource\r
- */ \r
- function db_select()\r
- {\r
- // Note: The brackets are required in the event that the DB name\r
- // contains reserved characters\r
- return @mssql_select_db('['.$this->database.']', $this->conn_id);\r
- }\r
-\r
- // --------------------------------------------------------------------\r
- \r
- /**\r
- * Set client character set\r
- *\r
- * @access public\r
- * @param string\r
- * @param string\r
- * @return resource\r
- */\r
- function db_set_charset($charset, $collation)\r
- {\r
- // @todo - add support if needed\r
- return TRUE;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
- \r
- /**\r
- * Execute the query\r
- *\r
- * @access private called by the base class\r
- * @param string an SQL query\r
- * @return resource\r
- */ \r
- function _execute($sql)\r
- {\r
- $sql = $this->_prep_query($sql);\r
- return @mssql_query($sql, $this->conn_id);\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Prep the query\r
- *\r
- * If needed, each database adapter can prep the query string\r
- *\r
- * @access private called by execute()\r
- * @param string an SQL query\r
- * @return string\r
- */ \r
- function _prep_query($sql)\r
- {\r
- return $sql;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Begin Transaction\r
- *\r
- * @access public\r
- * @return bool \r
- */ \r
- function trans_begin($test_mode = FALSE)\r
- {\r
- if ( ! $this->trans_enabled)\r
- {\r
- return TRUE;\r
- }\r
- \r
- // When transactions are nested we only begin/commit/rollback the outermost ones\r
- if ($this->_trans_depth > 0)\r
- {\r
- return TRUE;\r
- }\r
-\r
- // Reset the transaction failure flag.\r
- // If the $test_mode flag is set to TRUE transactions will be rolled back\r
- // even if the queries produce a successful result.\r
- $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;\r
-\r
- $this->simple_query('BEGIN TRAN');\r
- return TRUE;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Commit Transaction\r
- *\r
- * @access public\r
- * @return bool \r
- */ \r
- function trans_commit()\r
- {\r
- if ( ! $this->trans_enabled)\r
- {\r
- return TRUE;\r
- }\r
-\r
- // When transactions are nested we only begin/commit/rollback the outermost ones\r
- if ($this->_trans_depth > 0)\r
- {\r
- return TRUE;\r
- }\r
-\r
- $this->simple_query('COMMIT TRAN');\r
- return TRUE;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Rollback Transaction\r
- *\r
- * @access public\r
- * @return bool \r
- */ \r
- function trans_rollback()\r
- {\r
- if ( ! $this->trans_enabled)\r
- {\r
- return TRUE;\r
- }\r
-\r
- // When transactions are nested we only begin/commit/rollback the outermost ones\r
- if ($this->_trans_depth > 0)\r
- {\r
- return TRUE;\r
- }\r
-\r
- $this->simple_query('ROLLBACK TRAN');\r
- return TRUE;\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Escape String\r
- *\r
- * @access public\r
- * @param string\r
- * @return string\r
- */\r
- function escape_str($str) \r
- {\r
- // Access the CI object\r
- $CI =& get_instance();\r
- \r
- // Escape single quotes\r
- return str_replace("'", "''", $CI->input->_remove_invisible_characters($str));\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Affected Rows\r
- *\r
- * @access public\r
- * @return integer\r
- */\r
- function affected_rows()\r
- {\r
- return @mssql_rows_affected($this->conn_id);\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Insert ID\r
- *\r
- * Returns the last id created in the Identity column.\r
- *\r
- * @access public\r
- * @return integer\r
- */\r
- function insert_id()\r
- {\r
- $ver = self::_parse_major_version($this->version());\r
- $sql = ($ver >= 8 ? "SELECT SCOPE_IDENTITY() AS last_id" : "SELECT @@IDENTITY AS last_id");\r
- $query = $this->query($sql);\r
- $row = $query->row();\r
- return $row->last_id;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Parse major version\r
- *\r
- * Grabs the major version number from the \r
- * database server version string passed in.\r
- *\r
- * @access private\r
- * @param string $version\r
- * @return int16 major version number\r
- */\r
- function _parse_major_version($version)\r
- {\r
- preg_match('/([0-9]+)\.([0-9]+)\.([0-9]+)/', $version, $ver_info);\r
- return $ver_info[1]; // return the major version b/c that's all we're interested in.\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Version number query string\r
- *\r
- * @access public\r
- * @return string\r
- */\r
- function _version()\r
- {\r
- return "SELECT @@VERSION AS ver";\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * "Count All" query\r
- *\r
- * Generates a platform-specific query string that counts all records in\r
- * the specified database\r
- *\r
- * @access public\r
- * @param string\r
- * @return string\r
- */\r
- function count_all($table = '')\r
- {\r
- if ($table == '')\r
- return '0';\r
- \r
- $query = $this->query($this->_count_string . $this->_protect_identifiers('numrows'). " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));\r
-\r
- if ($query->num_rows() == 0)\r
- return '0';\r
-\r
- $row = $query->row();\r
- return $row->numrows;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * List table query\r
- *\r
- * Generates a platform-specific query string so that the table names can be fetched\r
- *\r
- * @access private\r
- * @param boolean\r
- * @return string\r
- */\r
- function _list_tables($prefix_limit = FALSE)\r
- {\r
- $sql = "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";\r
- \r
- // for future compatibility\r
- if ($prefix_limit !== FALSE AND $this->dbprefix != '')\r
- {\r
- //$sql .= " LIKE '".$this->dbprefix."%'";\r
- return FALSE; // not currently supported\r
- }\r
- \r
- return $sql;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * List column query\r
- *\r
- * Generates a platform-specific query string so that the column names can be fetched\r
- *\r
- * @access private\r
- * @param string the table name\r
- * @return string\r
- */\r
- function _list_columns($table = '')\r
- {\r
- return "SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$table."'"; \r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Field data query\r
- *\r
- * Generates a platform-specific query so that the column data can be retrieved\r
- *\r
- * @access public\r
- * @param string the table name\r
- * @return object\r
- */\r
- function _field_data($table)\r
- {\r
- return "SELECT TOP 1 * FROM ".$table; \r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * The error message string\r
- *\r
- * @access private\r
- * @return string\r
- */\r
- function _error_message()\r
- {\r
- // Are errros even supported in MS SQL?\r
- return '';\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * The error message number\r
- *\r
- * @access private\r
- * @return integer\r
- */\r
- function _error_number()\r
- {\r
- // Are error numbers supported?\r
- return '';\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Escape the SQL Identifiers\r
- *\r
- * This function escapes column and table names\r
- *\r
- * @access private\r
- * @param string\r
- * @return string\r
- */\r
- function _escape_identifiers($item)\r
- {\r
- if ($this->_escape_char == '')\r
- {\r
- return $item;\r
- }\r
- \r
- if (strpos($item, '.') !== FALSE)\r
- {\r
- $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char; \r
- }\r
- else\r
- {\r
- $str = $this->_escape_char.$item.$this->_escape_char;\r
- }\r
- \r
- // remove duplicates if the user already included the escape\r
- return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * From Tables\r
- *\r
- * This function implicitly groups FROM tables so there is no confusion\r
- * about operator precedence in harmony with SQL standards\r
- *\r
- * @access public\r
- * @param type\r
- * @return type\r
- */\r
- function _from_tables($tables)\r
- {\r
- if ( ! is_array($tables))\r
- {\r
- $tables = array($tables);\r
- }\r
- \r
- return implode(', ', $tables);\r
- }\r
-\r
- // --------------------------------------------------------------------\r
- \r
- /**\r
- * Insert statement\r
- *\r
- * Generates a platform-specific insert string from the supplied data\r
- *\r
- * @access public\r
- * @param string the table name\r
- * @param array the insert keys\r
- * @param array the insert values\r
- * @return string\r
- */\r
- function _insert($table, $keys, $values)\r
- { \r
- return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Update statement\r
- *\r
- * Generates a platform-specific update string from the supplied data\r
- *\r
- * @access public\r
- * @param string the table name\r
- * @param array the update data\r
- * @param array the where clause\r
- * @param array the orderby clause\r
- * @param array the limit clause\r
- * @return string\r
- */\r
- function _update($table, $values, $where, $orderby = array(), $limit = FALSE)\r
- {\r
- foreach($values as $key => $val)\r
- {\r
- $valstr[] = $key." = ".$val;\r
- }\r
- \r
- $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;\r
- \r
- $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';\r
- \r
- $sql = "UPDATE ".$table." SET ".implode(', ', $valstr);\r
-\r
- $sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';\r
-\r
- $sql .= $orderby.$limit;\r
- \r
- return $sql;\r
- }\r
-\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Truncate statement\r
- *\r
- * Generates a platform-specific truncate string from the supplied data\r
- * If the database does not support the truncate() command\r
- * This function maps to "DELETE FROM table"\r
- *\r
- * @access public\r
- * @param string the table name\r
- * @return string\r
- */ \r
- function _truncate($table)\r
- {\r
- return "TRUNCATE ".$table;\r
- }\r
- \r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Delete statement\r
- *\r
- * Generates a platform-specific delete string from the supplied data\r
- *\r
- * @access public\r
- * @param string the table name\r
- * @param array the where clause\r
- * @param string the limit clause\r
- * @return string\r
- */ \r
- function _delete($table, $where = array(), $like = array(), $limit = FALSE)\r
- {\r
- $conditions = '';\r
-\r
- if (count($where) > 0 OR count($like) > 0)\r
- {\r
- $conditions = "\nWHERE ";\r
- $conditions .= implode("\n", $this->ar_where);\r
-\r
- if (count($where) > 0 && count($like) > 0)\r
- {\r
- $conditions .= " AND ";\r
- }\r
- $conditions .= implode("\n", $like);\r
- }\r
-\r
- $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;\r
- \r
- return "DELETE FROM ".$table.$conditions.$limit;\r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Limit string\r
- *\r
- * Generates a platform-specific LIMIT clause\r
- *\r
- * @access public\r
- * @param string the sql query string\r
- * @param integer the number of rows to limit the query to\r
- * @param integer the offset value\r
- * @return string\r
- */\r
- function _limit($sql, $limit, $offset)\r
- {\r
- $i = $limit + $offset;\r
- \r
- return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$i.' ', $sql); \r
- }\r
-\r
- // --------------------------------------------------------------------\r
-\r
- /**\r
- * Close DB Connection\r
- *\r
- * @access public\r
- * @param resource\r
- * @return void\r
- */\r
- function _close($conn_id)\r
- {\r
- @mssql_close($conn_id);\r
- } \r
-\r
-}\r
-\r
-\r
-\r
-/* End of file mssql_driver.php */\r
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * MS SQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package CodeIgniter
+ * @subpackage Drivers
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_mssql_driver extends CI_DB {
+
+ var $dbdriver = 'mssql';
+
+ // The character used for escaping
+ var $_escape_char = '';
+ /**
+ * The syntax to count rows is slightly different across different
+ * database engines, so this string appears in each driver and is
+ * used for the count_all() and count_all_results() functions.
+ */
+ var $_count_string = "SELECT COUNT(*) AS ";
+ var $_random_keyword = ' ASC'; // not currently supported
+
+ /**
+ * Non-persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_connect()
+ {
+ if ($this->port != '')
+ {
+ $this->hostname .= ','.$this->port;
+ }
+
+ return @mssql_connect($this->hostname, $this->username, $this->password);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_pconnect()
+ {
+ if ($this->port != '')
+ {
+ $this->hostname .= ','.$this->port;
+ }
+
+ return @mssql_pconnect($this->hostname, $this->username, $this->password);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Select the database
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_select()
+ {
+ // Note: The brackets are required in the event that the DB name
+ // contains reserved characters
+ return @mssql_select_db('['.$this->database.']', $this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set client character set
+ *
+ * @access public
+ * @param string
+ * @param string
+ * @return resource
+ */
+ function db_set_charset($charset, $collation)
+ {
+ // @todo - add support if needed
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Execute the query
+ *
+ * @access private called by the base class
+ * @param string an SQL query
+ * @return resource
+ */
+ function _execute($sql)
+ {
+ $sql = $this->_prep_query($sql);
+ return @mssql_query($sql, $this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Prep the query
+ *
+ * If needed, each database adapter can prep the query string
+ *
+ * @access private called by execute()
+ * @param string an SQL query
+ * @return string
+ */
+ function _prep_query($sql)
+ {
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Begin Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_begin($test_mode = FALSE)
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ // Reset the transaction failure flag.
+ // If the $test_mode flag is set to TRUE transactions will be rolled back
+ // even if the queries produce a successful result.
+ $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
+ $this->simple_query('BEGIN TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Commit Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_commit()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ $this->simple_query('COMMIT TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Rollback Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_rollback()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ $this->simple_query('ROLLBACK TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape String
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function escape_str($str)
+ {
+ // Access the CI object
+ $CI =& get_instance();
+
+ // Escape single quotes
+ return str_replace("'", "''", $CI->input->_remove_invisible_characters($str));
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Affected Rows
+ *
+ * @access public
+ * @return integer
+ */
+ function affected_rows()
+ {
+ return @mssql_rows_affected($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert ID
+ *
+ * Returns the last id created in the Identity column.
+ *
+ * @access public
+ * @return integer
+ */
+ function insert_id()
+ {
+ $ver = self::_parse_major_version($this->version());
+ $sql = ($ver >= 8 ? "SELECT SCOPE_IDENTITY() AS last_id" : "SELECT @@IDENTITY AS last_id");
+ $query = $this->query($sql);
+ $row = $query->row();
+ return $row->last_id;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Parse major version
+ *
+ * Grabs the major version number from the
+ * database server version string passed in.
+ *
+ * @access private
+ * @param string $version
+ * @return int16 major version number
+ */
+ function _parse_major_version($version)
+ {
+ preg_match('/([0-9]+)\.([0-9]+)\.([0-9]+)/', $version, $ver_info);
+ return $ver_info[1]; // return the major version b/c that's all we're interested in.
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Version number query string
+ *
+ * @access public
+ * @return string
+ */
+ function _version()
+ {
+ return "SELECT @@VERSION AS ver";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * "Count All" query
+ *
+ * Generates a platform-specific query string that counts all records in
+ * the specified database
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function count_all($table = '')
+ {
+ if ($table == '')
+ return '0';
+
+ $query = $this->query($this->_count_string . $this->_protect_identifiers('numrows'). " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
+
+ if ($query->num_rows() == 0)
+ return '0';
+
+ $row = $query->row();
+ return $row->numrows;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List table query
+ *
+ * Generates a platform-specific query string so that the table names can be fetched
+ *
+ * @access private
+ * @param boolean
+ * @return string
+ */
+ function _list_tables($prefix_limit = FALSE)
+ {
+ $sql = "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
+
+ // for future compatibility
+ if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+ {
+ //$sql .= " LIKE '".$this->dbprefix."%'";
+ return FALSE; // not currently supported
+ }
+
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List column query
+ *
+ * Generates a platform-specific query string so that the column names can be fetched
+ *
+ * @access private
+ * @param string the table name
+ * @return string
+ */
+ function _list_columns($table = '')
+ {
+ return "SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$table."'";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Field data query
+ *
+ * Generates a platform-specific query so that the column data can be retrieved
+ *
+ * @access public
+ * @param string the table name
+ * @return object
+ */
+ function _field_data($table)
+ {
+ return "SELECT TOP 1 * FROM ".$table;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message string
+ *
+ * @access private
+ * @return string
+ */
+ function _error_message()
+ {
+ // Are errros even supported in MS SQL?
+ return '';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message number
+ *
+ * @access private
+ * @return integer
+ */
+ function _error_number()
+ {
+ // Are error numbers supported?
+ return '';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape the SQL Identifiers
+ *
+ * This function escapes column and table names
+ *
+ * @access private
+ * @param string
+ * @return string
+ */
+ function _escape_identifiers($item)
+ {
+ if ($this->_escape_char == '')
+ {
+ return $item;
+ }
+
+ if (strpos($item, '.') !== FALSE)
+ {
+ $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
+ }
+ else
+ {
+ $str = $this->_escape_char.$item.$this->_escape_char;
+ }
+
+ // remove duplicates if the user already included the escape
+ return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * From Tables
+ *
+ * This function implicitly groups FROM tables so there is no confusion
+ * about operator precedence in harmony with SQL standards
+ *
+ * @access public
+ * @param type
+ * @return type
+ */
+ function _from_tables($tables)
+ {
+ if ( ! is_array($tables))
+ {
+ $tables = array($tables);
+ }
+
+ return implode(', ', $tables);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert statement
+ *
+ * Generates a platform-specific insert string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _insert($table, $keys, $values)
+ {
+ return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Update statement
+ *
+ * Generates a platform-specific update string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @param array the orderby clause
+ * @param array the limit clause
+ * @return string
+ */
+ function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+ {
+ foreach($values as $key => $val)
+ {
+ $valstr[] = $key." = ".$val;
+ }
+
+ $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+ $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+
+ $sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
+
+ $sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
+
+ $sql .= $orderby.$limit;
+
+ return $sql;
+ }
+
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Truncate statement
+ *
+ * Generates a platform-specific truncate string from the supplied data
+ * If the database does not support the truncate() command
+ * This function maps to "DELETE FROM table"
+ *
+ * @access public
+ * @param string the table name
+ * @return string
+ */
+ function _truncate($table)
+ {
+ return "TRUNCATE ".$table;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Delete statement
+ *
+ * Generates a platform-specific delete string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the where clause
+ * @param string the limit clause
+ * @return string
+ */
+ function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+ {
+ $conditions = '';
+
+ if (count($where) > 0 OR count($like) > 0)
+ {
+ $conditions = "\nWHERE ";
+ $conditions .= implode("\n", $this->ar_where);
+
+ if (count($where) > 0 && count($like) > 0)
+ {
+ $conditions .= " AND ";
+ }
+ $conditions .= implode("\n", $like);
+ }
+
+ $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+ return "DELETE FROM ".$table.$conditions.$limit;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Limit string
+ *
+ * Generates a platform-specific LIMIT clause
+ *
+ * @access public
+ * @param string the sql query string
+ * @param integer the number of rows to limit the query to
+ * @param integer the offset value
+ * @return string
+ */
+ function _limit($sql, $limit, $offset)
+ {
+ $i = $limit + $offset;
+
+ return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$i.' ', $sql);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Close DB Connection
+ *
+ * @access public
+ * @param resource
+ * @return void
+ */
+ function _close($conn_id)
+ {
+ @mssql_close($conn_id);
+ }
+
+}
+
+
+
+/* End of file mssql_driver.php */
/* Location: ./system/database/drivers/mssql/mssql_driver.php */
\ No newline at end of file
git://git.onelab.eu / www-register-wizard.git / blobdiff