https://baresql.com/tags/functions-and-operators/ Recent content in Functions and Operators on BareSQL.com Hugo en-us Mon, 26 Oct 2026 00:00:00 +0000 https://baresql.com/sql-functions-that-exist-on-some-engines-only-and-what-to-write-instead/ Mon, 26 Oct 2026 00:00:00 +0000 https://baresql.com/sql-functions-that-exist-on-some-engines-only-and-what-to-write-instead/ <p>IFNULL, NOW, LEFT and STRING_AGG are everyday functions, and each one is missing on at least one of SQLite, PostgreSQL, MySQL and MariaDB. BareSQL Portable knows 78 functions like these.</p> <p>Each function in the table was called on all four engines, and the table shows where the call ran and what to write instead.</p> <p><img src="https://baresql.com/images/rule-function-not-everywhere.png" alt="SELECT IFNULL(NULL, 'x'), run on four engines: SQLite 3.45.1 'x'; PostgreSQL 16.15 error: function ifnull(unknown, unknown) does not exist; MySQL 8.0.46 'x'; MariaDB 10.11.14 'x'."></p> https://baresql.com/sql-operators-that-exist-on-some-engines-only-and-what-to-write-instead/ Mon, 26 Oct 2026 00:00:00 +0000 https://baresql.com/sql-operators-that-exist-on-some-engines-only-and-what-to-write-instead/ <p>Operators such as <code>::</code>, <code>ILIKE</code>, <code>DIV</code> and <code>XOR</code> belong to one or two engines, and the others refuse them. BareSQL Portable knows 16 operators like these.</p> <p>Each operator in the table was used on all four engines, and the table shows where it ran and what to write instead.</p> <p><img src="https://baresql.com/images/rule-operator-not-everywhere.png" alt="SELECT 'abc' ILIKE 'ABC', run on four engines: SQLite 3.45.1 error: near &quot;'ABC'&quot;: syntax error; PostgreSQL 16.15 true; MySQL 8.0.46 error: You have an error in your SQL syntax ... near ''ABC'' at line 1; MariaDB 10.11.14 error: You have an error in your SQL syntax ... near ''ABC'' at line 1."></p>