How to query all tables in the database in SQL

The commands for querying all tables in the database vary by DBMS. The following are three common DBMS commands: MySQL: SHOW TABLES; PostgreSQL: SELECT * FROM pg_catalog.pg_tables; SQLite: SELECT name FROM sqlite_master WHERE type = 'table';

How to query all tables in a database

The commands for querying all tables in a database vary by database management system (DBMS). Here are the three most commonly used DBMS query commands:

MySQL

 <code class="sql">SHOW TABLES;</code>

PostgreSQL

 <code class="sql">SELECT * FROM pg_catalog.pg_tables;</code>

SQLite

 <code class="sql">SELECT name FROM sqlite_master WHERE type = 'table';</code>

These commands will return a result set containing all the table names in the database. You can filter the results by adding additional clauses to the command, for example:

MySQL

 <code class="sql">SHOW TABLES LIKE '%user%';</code>

PostgreSQL

 <code class="sql">SELECT * FROM pg_catalog.pg_tables WHERE tableowner = 'someuser';</code>

SQLite

 <code class="sql">SELECT name FROM sqlite_master WHERE type = 'table' AND tbl_name LIKE '%user%';</code>

These sample queries will return all tables with names containing the string "user".

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