如何使用Apache方解石LIKE_REGEX

Question

I would like to use LIKE_REGEX in Apache calcite SQL query and can not find any documentation or examples on how to use it. Can you please share examples or documentation around it's usage.

Answer 1

LIKE_REGEX was introduced in the SQL:2008 standard but as of version 1.17 Calcite does not currently support it. (If you look at Calcite's SQL reference, LIKE_REGEX appears in Calcite's list of reserved SQL keywords because Calcite automatically reserves keywords listed in the SQL standard.)

If you would like to match regular expressions, use SIMILAR TO . For example, the query VALUES 'abcccd' similar to 'ab*c+d' returns TRUE .

Calcite's implementation of SIMILAR TO has semantics similar to PostgreSQL's implementation .