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# SQL Parser A validating SQL lexer and parser with a focus on MySQL dialect. ## Code status  [](https://scrutinizer-ci.com/g/phpmyadmin/sql-parser/?branch=master) [](https://codecov.io/github/phpmyadmin/sql-parser?branch=master) [](https://scrutinizer-ci.com/g/phpmyadmin/sql-parser/?branch=master) [](https://hosted.weblate.org/engage/phpmyadmin/?utm_source=widget) [](https://packagist.org/packages/phpmyadmin/sql-parser) [](https://www.codetriage.com/phpmyadmin/sql-parser) [](https://shepherd.dev/github/phpmyadmin/sql-parser) [](https://infection.github.io) ## Installation Please use [Composer][1] to install: ```sh composer require phpmyadmin/sql-parser ``` ## Documentation The API documentation is available at <https://develdocs.phpmyadmin.net/sql-parser/>. ## Usage ### Command line utilities Command line utility to syntax highlight SQL query: ```sh ./vendor/bin/highlight-query --query "SELECT 1" ``` Command line utility to lint SQL query: ```sh ./vendor/bin/lint-query --query "SELECT 1" ``` Command line utility to tokenize SQL query: ```sh ./vendor/bin/tokenize-query --query "SELECT 1" ``` All commands are able to parse input from stdin (standard in), such as: ```sh echo "SELECT 1" | ./vendor/bin/highlight-query cat example.sql | ./vendor/bin/lint-query ``` ### Formatting SQL query ```php echo PhpMyAdmin\SqlParser\Utils\Formatter::format($query, ['type' => 'html']); ``` ### Discoverying query type ```php use PhpMyAdmin\SqlParser\Parser; use PhpMyAdmin\SqlParser\Utils\Query; $query = 'OPTIMIZE TABLE tbl'; $parser = new Parser($query); $flags = Query::getFlags($parser->statements[0]); echo $flags['querytype']; ``` ### Parsing and building SQL query ```php require __DIR__ . '/vendor/autoload.php'; $query1 = 'select * from a'; $parser = new PhpMyAdmin\SqlParser\Parser($query1); // inspect query var_dump($parser->statements[0]); // outputs object(PhpMyAdmin\SqlParser\Statements\SelectStatement) // modify query by replacing table a with table b $table2 = new \PhpMyAdmin\SqlParser\Components\Expression('', 'b', '', ''); $parser->statements[0]->from[0] = $table2; // build query again from an array of object(PhpMyAdmin\SqlParser\Statements\SelectStatement) to a string $statement = $parser->statements[0]; $query2 = $statement->build(); var_dump($query2); // outputs string(19) 'SELECT * FROM `b` ' // Change SQL mode PhpMyAdmin\SqlParser\Context::setMode(PhpMyAdmin\SqlParser\Context::SQL_MODE_ANSI_QUOTES); // build the query again using different quotes $query2 = $statement->build(); var_dump($query2); // outputs string(19) 'SELECT * FROM "b" ' ``` ## Localization You can localize error messages installing `phpmyadmin/motranslator` version `5.0` or newer: ```sh composer require phpmyadmin/motranslator:^5.0 ``` The locale is automatically detected from your environment, you can also set a different locale **From cli**: ```sh LC_ALL=pl ./vendor/bin/lint-query --query "SELECT 1" ``` **From php**: ```php require __DIR__ . '/vendor/autoload.php'; $GLOBALS['lang'] = 'pl'; $query1 = 'select * from a'; $parser = new PhpMyAdmin\SqlParser\Parser($query1); ``` ## More information This library was originally created during the Google Summer of Code 2015 and has been used by phpMyAdmin since version 4.5. [1]:https://getcomposer.org/