SQL is the standard operation language between users and databases. SQL Parse engine parses SQL into an abstract syntax tree to provide to Apache ShardingSphere for understanding and implementing the add-on features.

It supports SQL dialect for MySQL, PostgreSQL, SQLServer, Oracle, openGauss and SQL that conform to the SQL92 specification. Due to the complexity of SQL syntax, there are still some SQL that are not yet supported.

This chapter lists unsupported SQLs as a reference for users.

We will try best to support the unavailable SQLs in future versions.