Marios Trivyzas 67d4e399c2
SQL: Implement CASE... WHEN... THEN... ELSE... END (#41349)
Implement the ANSI SQL CASE expression which provides the if/else
functionality common to most programming languages.

The CASE expression can have multiple WHEN branches and becomes a
powerful tool for SQL queries as it can be used in SELECT, WHERE,
GROUP BY, HAVING and ORDER BY clauses.

Closes: #36200
(cherry picked from commit 8b2577406f47ae60d15803058921d128390af0b6)
2019-04-22 19:26:56 +03:00
..