Fixing a problem with an OP_CONCAT in WhenExpression #1837
Merged
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Version: 4.7-SNAPSHOT
The problem was in an ELSE part of the WHEN expression. When we had a sub WHEN in ELSE and concatenate it with some another string:
CASE WHEN 1 = 2 THEN 'string1' ELSE CASE WHEN 2 = 3 THEN 'string2' ELSE 'first part' END || 'second part' END