Source of file SQL.php
Size: 3,004 Bytes - Last Modified: 2018-01-24T17:42:33+00:00
src/Drivers/Sqlite/SQL.php
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| <?php declare(strict_types=1); /** * Query * * SQL Query Builder / Database Abstraction Layer * * PHP version 7.1 * * @package Query * @author Timothy J. Warren <tim@timshomepage.net> * @copyright 2012 - 2018 Timothy J. Warren * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link https://git.timshomepage.net/aviat4ion/Query */ namespace Query\Drivers\Sqlite; use Query\Drivers\AbstractSQL; /** * SQLite Specific SQL */ class SQL extends AbstractSQL { /** * Get the query plan for the sql query * * @param string $sql * @return string */ public function explain(string $sql): string { return "EXPLAIN QUERY PLAN {$sql}"; } /** * Random ordering keyword * * @return string */ public function random(): string { return ' RANDOM()'; } /** * Returns sql to list other databases * * @return string */ public function dbList(): string { return 'PRAGMA database_list'; } /** * Returns sql to list tables * * @return string */ public function tableList(): string { return <<<SQL SELECT DISTINCT "name" FROM "sqlite_master" WHERE "type"='table' AND "name" NOT LIKE 'sqlite_%' ORDER BY "name" DESC SQL; } /** * List the system tables * * @return string[] */ public function systemTableList(): array { return ['sqlite_master', 'sqlite_temp_master', 'sqlite_sequence']; } /** * Returns sql to list views * * @return string */ public function viewList(): string { return <<<SQL SELECT "name" FROM "sqlite_master" WHERE "type" = 'view' SQL; } /** * Returns sql to list triggers * * @return string */ public function triggerList(): string { return 'SELECT "name" FROM "sqlite_master" WHERE "type"=\'trigger\''; } /** * Return sql to list functions * * @return string */ public function functionList(): ?string { return NULL; } /** * Return sql to list stored procedures * * @return string */ public function procedureList(): ?string { return NULL; } /** * Return sql to list sequences * * @return string */ public function sequenceList(): ?string { return NULL; } /** * SQL to show list of field types * * @return string[] */ public function typeList(): array { return ['INTEGER', 'REAL', 'TEXT', 'BLOB']; } /** * SQL to show information about columns in a table * * @param string $table * @return string */ public function columnList(string $table): string { return 'PRAGMA table_info("' . $table . '")'; } /** * Get the list of foreign keys for the current * table * * @param string $table * @return string */ public function fkList(string $table): string { return 'PRAGMA foreign_key_list("' . $table . '")'; } /** * Get the list of indexes for the current table * * @param string $table * @return string */ public function indexList(string $table): string { return 'PRAGMA index_list("' . $table . '")'; } } |