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3 Commits

Author SHA1 Message Date
dan
8628c10e27 Do not disable unused columns in a UNION ALL sub-query if any component of the sub-query is DISTINCT. 
FossilOrigin-Name: c84d5602ac9bfb4f12c3cf62033af616e51913c26877d1a0761363a625295f53
 2023-08-31 18:00:10 +00:00
drh
4edbcdd391 In the [/info/7c2d3406000dc8ac|omit-unused-subquery-columns optimization], be 
sure to remove the EP_Skip and EP_Unlikely flags from the result set expressions
that get nulled-out.  dbsqlfuzz bf1d3ed6e0e0dd8766027797d43db40c776d2b15.

FossilOrigin-Name: 21aec65e5e2a01e58dd0bb8c8b9b29b8414373b53353fc7ca80a152fdd27566b
 2023-02-26 11:36:35 +00:00
drh
e43d101c83 A few simple test cases for the omit-unused-subquery-column optimization. 
FossilOrigin-Name: cf8f57c53425d89619ece10edc197d7d28946d3b23fcb4f526330196c76d9cc1
 2023-02-16 19:41:39 +00:00