4 Commits

Author	SHA1	Message	Date
drh	d98f53249c	When a column must be a constant due to WHERE clause and the value of that ... column is being coded as a constant, make sure the affinity is correct. FossilOrigin-Name: 7404ea83168e6c739ebe8fc5d65bbf0265432ccb35b3418bb0381d74362f7527	2018-08-09 18:36:54 +00:00
drh	7de7602eb7	Add a test case demonstrating the collation problem with constant propagation. ... FossilOrigin-Name: 50add839fd95665bd67a6ae5de8346fd09e83904bbcbad26fad280dff86d9e93	2018-07-26 23:54:19 +00:00
drh	24e1116e0f	Generalize the constant propagation optimization so that it applies on every ... WHERE close, not just those that contain a subquery. This then demonstrates that the current implementation is inadequate since it does not take into account collating sequences. FossilOrigin-Name: 57eb2abd5b270d65be5e0f138f0d46899fa6091df3ba20b0ea7ef04244a15d48	2018-07-26 23:47:11 +00:00
drh	660ee55663	Initial implementation of the WHERE-clause constant propagation optimization. ... FossilOrigin-Name: 2fb82ad8ebb6434438c0d235b1239444fb08c8711cea2c5a9ed955fedd0acdec	2018-07-26 21:16:53 +00:00