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<?php declare(strict_types=1); |
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/** |
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* Query |
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* |
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* SQL Query Builder / Database Abstraction Layer |
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* |
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* PHP version 7.1 |
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* |
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* @package Query |
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* @author Timothy J. Warren <[email protected]> |
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* @copyright 2012 - 2018 Timothy J. Warren |
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* @license http://www.opensource.org/licenses/mit-license.html MIT License |
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* @link https://git.timshomepage.net/aviat4ion/Query |
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*/ |
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namespace Query\Drivers\Sqlite; |
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use Query\Drivers\AbstractSQL; |
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use Query\Exception\NotImplementedException; |
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/** |
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* SQLite Specific SQL |
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*/ |
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class SQL extends 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(string $sql): string |
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{ |
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return "EXPLAIN QUERY PLAN {$sql}"; |
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} |
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/** |
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* Random ordering keyword |
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* |
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* @return string |
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*/ |
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public function random(): string |
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{ |
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return ' RANDOM()'; |
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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 dbList(): string |
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{ |
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return 'PRAGMA database_list'; |
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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 tableList(): string |
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{ |
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return <<<SQL |
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SELECT "name" FROM ( |
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SELECT * FROM "sqlite_master" UNION ALL |
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SELECT * FROM "sqlite_temp_master" |
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) |
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WHERE "type"='table' |
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AND "name" NOT LIKE "sqlite_%" |
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ORDER BY "name" |
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SQL; |
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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 systemTableList(): array |
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{ |
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return [ |
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'sqlite_master', |
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'sqlite_temp_master', |
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'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 viewList(): string |
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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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* 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 triggerList(): string |
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{ |
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return <<<SQL |
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SELECT "name" FROM "sqlite_master" WHERE "type"='trigger' |
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SQL; |
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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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* @throws NotImplementedException |
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* @return string |
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*/ |
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public function functionList(): string |
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{ |
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throw new NotImplementedException('Functionality does not exist in SQLite'); |
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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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* @throws NotImplementedException |
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* @return string |
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*/ |
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public function procedureList(): string |
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{ |
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throw new NotImplementedException('Functionality does not exist in SQLite'); |
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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 string |
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*/ |
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public function sequenceList(): string |
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{ |
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return 'SELECT "name" FROM "sqlite_sequence"'; |
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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 typeList(): array |
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{ |
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return ['INTEGER', 'REAL', 'TEXT', 'BLOB', 'NULL']; |
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} |
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/** |
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* SQL to show information 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 columnList(string $table): string |
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{ |
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return <<<SQL |
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PRAGMA table_info("$table") |
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SQL; |
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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 fkList(string $table): string |
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{ |
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return <<<SQL |
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PRAGMA foreign_key_list("$table") |
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SQL; |
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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 indexList(string $table): string |
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{ |
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return <<<SQL |
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PRAGMA index_list("$table") |
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SQL; |
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} |
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} |
aviat4ion /
Query
