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<?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 - 2015 |
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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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namespace Query\Drivers\Sqlite; |
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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 SQL extends \Query\AbstractSQL { |
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/** |
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* Get the query plan for the sql query |
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* |
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* @param string $sql |
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* @return string |
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*/ |
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public function explain($sql) |
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{ |
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return "EXPLAIN QUERY PLAN {$sql}"; |
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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 string |
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*/ |
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public function db_list() |
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{ |
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return 'PRAGMA database_list'; |
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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 DISTINCT "name" |
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FROM "sqlite_master" |
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WHERE "type"='table' |
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AND "name" NOT LIKE 'sqlite_%' |
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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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* List the system tables |
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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 array('sqlite_master', 'sqlite_temp_master', 'sqlite_sequence'); |
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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 string |
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*/ |
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public function trigger_list() |
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{ |
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return 'SELECT "name" FROM "sqlite_master" WHERE "type"=\'trigger\''; |
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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 string[] |
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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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/** |
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* Get the list of foreign keys for the current |
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* table |
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* |
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* @param string $table |
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* @return string |
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*/ |
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public function fk_list($table) |
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{ |
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return 'PRAGMA foreign_key_list("' . $table . '")'; |
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} |
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// -------------------------------------------------------------------------- |
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/** |
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* Get the list of indexes for the current table |
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* |
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* @param string $table |
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* @return string |
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*/ |
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public function index_list($table) |
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{ |
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return 'PRAGMA index_list("' . $table . '")'; |
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} |
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} |
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//End of sqlite_sql.php |