Source of file SQL.php
Size: 3,507 Bytes - Last Modified: 2020-04-10T20:54:13-04:00
src/Drivers/Sqlite/SQL.php
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196 | <?php declare(strict_types=1); /** * Query * * SQL Query Builder / Database Abstraction Layer * * PHP version 7.4 * * @package Query * @author Timothy J. Warren <tim@timshomepage.net> * @copyright 2012 - 2020 Timothy J. Warren * @license http://www.opensource.org/licenses/mit-license.html MIT License * @link https://git.timshomepage.net/aviat/Query * @version 3.0.0 */ namespace Query\Drivers\Sqlite; use Query\Drivers\AbstractSQL; use Query\Exception\NotImplementedException; /** * 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. Meaningless for SQLite, as this * just returns the database(s) that we are currently connected to. * * @return string */ public function dbList(): string { return ''; } /** * Returns sql to list tables * * @return string */ public function tableList(): string { return <<<SQL SELECT "name" FROM ( SELECT * FROM "sqlite_master" UNION ALL SELECT * FROM "sqlite_temp_master" ) WHERE "type"='table' AND "name" NOT LIKE "sqlite_%" ORDER BY "name" 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 <<<SQL SELECT "name" FROM "sqlite_master" WHERE "type"='trigger' SQL; } /** * Return sql to list functions * * @throws NotImplementedException * @return string */ public function functionList(): string { throw new NotImplementedException('Functionality does not exist in SQLite'); } /** * Return sql to list stored procedures * * @throws NotImplementedException * @return string */ public function procedureList(): string { throw new NotImplementedException('Functionality does not exist in SQLite'); } /** * Return sql to list sequences * * @return string */ public function sequenceList(): string { return 'SELECT "name" FROM "sqlite_sequence"'; } /** * SQL to show list of field types * * @return string[] */ public function typeList(): array { return ['INTEGER', 'REAL', 'TEXT', 'BLOB', 'NULL']; } /** * SQL to show information about columns in a table * * @param string $table * @return string */ public function columnList(string $table): string { return <<<SQL PRAGMA table_info("$table") SQL; } /** * Get the list of foreign keys for the current * table * * @param string $table * @return string */ public function fkList(string $table): string { return <<<SQL PRAGMA foreign_key_list("$table") SQL; } /** * Get the list of indexes for the current table * * @param string $table * @return string */ public function indexList(string $table): string { return <<<SQL PRAGMA index_list("$table") SQL; } } |