[MCOL-5228] Implement JSON_OBJECTAGG Created: 2022-09-21  Updated: 2023-12-15

Status: Open
Project: MariaDB ColumnStore
Component/s: None
Affects Version/s: 22.08.1
Fix Version/s: Icebox

Type: New Feature Priority: Major
Reporter: Roman Assignee: Max Mether
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Issue split
split from MCOL-785 Implement DISTRIBUTED JSON functions Closed

 Description   

JSON_OBJECTAGG is a function that makes JSON object out of a sequence of column or literal values.
Its algorithm is simplier comparing to JSON_ARRAYAGG but it can produce an enormous string in the end.
JSON_OBJECTAGG is an aggregation function by its definition thus it must be impemented as an aggregation function, e.g. group_concat w/o ORDER BY, LIMIT etc.
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