Is there something like GROUP_CONCAT in Firebird?
In Firebird 2.1 and above there is a LIST aggregate function that does it.
In Firebird 2.0 you can achieve it with some procedural code and EXECUTE BLOCK.
In Firebird 1.x you need to write a stored procedure and then select from it. It is the same as with EXECUTE BLOCK, but it cannot be done in a single statement.
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