Column masks don't work when view declares columns with uppercase names #24054
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ksobolew
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Nov 7, 2024
The table column reference was registered incorectly with the original case taken from the view definition. It then failed to match the column schema returned from `SystemAccessControl` and the mask was not applied. Additionally, the registered table column references are also used to check access to the columns; those were also using the original case from the view definition and access control was not recognizing them. Fixes trinodb#24054.
ksobolew
added a commit
to ksobolew/trino
that referenced
this issue
Nov 7, 2024
The table column reference was registered incorectly with the original case taken from the view definition. It then failed to match the column schema returned from `SystemAccessControl` and the mask was not applied. Additionally, the registered table column references are also used to check access to the columns; those were also using the original case from the view definition and access control was not recognizing them. Fixes trinodb#24054.
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The view can be as simple as something like this:
When there is a column mask on "column", it should work, because in Trino column names are case-insensitive, but it does not.
(It's difficult to have a full reproducer in a ticket description, because there's no syntax to create column masks in SQL.)
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