183 lines
3.2 KiB
PHP
183 lines
3.2 KiB
PHP
<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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* @package Query
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012 - 2013
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* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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/**
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* SQLite Specific SQL
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*
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* @package Query
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* @subpackage Drivers
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*/
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class SQLite_SQL implements iDB_SQL {
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/**
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* Limit clause
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*
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* @param string $sql
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* @param int $limit
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* @param int $offset
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* @return string
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*/
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public function limit($sql, $limit, $offset=FALSE)
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{
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if ( ! is_numeric($offset))
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{
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return $sql." LIMIT {$limit}";
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}
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return $sql." LIMIT {$offset}, {$limit}";
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}
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// --------------------------------------------------------------------------
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/**
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* Random ordering keyword
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*
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* @return string
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*/
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public function random()
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{
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return ' RANDOM()';
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}
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// --------------------------------------------------------------------------
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/**
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* Returns sql to list other databases
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*
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* @return NULL
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*/
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public function db_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* Returns sql to list tables
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*
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* @return string
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*/
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public function table_list()
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{
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return <<<SQL
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SELECT "name"
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FROM "sqlite_master"
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WHERE "type"='table'
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ORDER BY "name" DESC
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SQL;
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}
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// --------------------------------------------------------------------------
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/**
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* Overridden in SQLite class
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*
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* @return string
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*/
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public function system_table_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* Returns sql to list views
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*
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* @return string
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*/
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public function view_list()
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{
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return <<<SQL
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SELECT "name" FROM "sqlite_master" WHERE "type" = 'view'
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SQL;
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}
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// --------------------------------------------------------------------------
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/**
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* Returns sql to list triggers
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*
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* @return NULL
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*/
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public function trigger_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* Return sql to list functions
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*
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* @return NULL
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*/
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public function function_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* Return sql to list stored procedures
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*
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* @return NULL
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*/
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public function procedure_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* Return sql to list sequences
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*
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* @return NULL
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*/
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public function sequence_list()
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{
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return NULL;
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}
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// --------------------------------------------------------------------------
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/**
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* SQL to show list of field types
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*
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* @return array
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*/
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public function type_list()
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{
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return array('INTEGER', 'REAL', 'TEXT', 'BLOB');
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}
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// --------------------------------------------------------------------------
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/**
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* SQL to show infromation about columns in a table
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*
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* @param string $table
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* @return string
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*/
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public function column_list($table)
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{
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return 'PRAGMA table_info("'.$table.'")';
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}
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}
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//End of sqlite_sql.php
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