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Add CASE expression documentation #3763

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cdafb7d
Add CASE expression documentation
arnaud-lacurie Nov 17, 2025
46ae200
Fix CASE documentation tests and remove unsupported examples
arnaud-lacurie Nov 17, 2025
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1 change: 1 addition & 0 deletions docs/sphinx/source/reference/sql_commands/DQL.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@ Syntax
DQL/SELECT
DQL/WITH
DQL/WHERE
DQL/CASE
DQL/EXPLAIN

.. toctree::
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19 changes: 19 additions & 0 deletions docs/sphinx/source/reference/sql_commands/DQL/CASE.diagram
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@@ -0,0 +1,19 @@
Diagram(
Terminal('CASE'),
Optional(NonTerminal('expression')),
OneOrMore(
Sequence(
Terminal('WHEN'),
NonTerminal('condition'),
Terminal('THEN'),
NonTerminal('result')
)
),
Optional(
Sequence(
Terminal('ELSE'),
NonTerminal('result')
)
),
Terminal('END')
)
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