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Failed to parse sql with expression in LIMIT clause #5097

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sunng87 opened this issue Dec 4, 2024 · 1 comment
Open

Failed to parse sql with expression in LIMIT clause #5097

sunng87 opened this issue Dec 4, 2024 · 1 comment
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C-enhancement Category Enhancements

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@sunng87
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sunng87 commented Dec 4, 2024

What type of enhancement is this?

API improvement

What does the enhancement do?

To support SQL statement like:

SELECT 1 LIMIT 1::bigint

This is how postgres send limit clause to remote server when the original query contains a limit clause. Currently we got an error say:

ERROR:  Failed to plan SQL: Error during planning: Unexpected expression in LIMIT clause

Implementation challenges

No response
@sunng87 sunng87 added the C-enhancement Category Enhancements label Dec 4, 2024
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sunng87 commented Dec 5, 2024

This issue has been fixed in datafusion 43 apache/datafusion#13028

sunng87 added a commit to sunng87/greptimedb that referenced this issue Dec 5, 2024
@sunng87
feat: add a temporary sql rewrite for cast in limit
3793d1b 
this issue is described in GreptimeTeam#5097
github-merge-queue bot pushed a commit that referenced this issue Dec 6, 2024
@sunng87
feat: add cursor statements (#5094)
3133f3f 
* feat: add sql parsers for cursor operations

* feat: cursor operator

* feat: implement RecordBatchStreamCursor

* feat: implement cursor storage and execution

* test: add tests

* chore: update docstring

* feat: add a temporary sql rewrite for cast in limit

this issue is described in #5097

* test: add more sql for cursor integration test

* feat: reject non-select query for cursor statement

* refactor: address review issues

* test: add empty result case

* feat: address review comments
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