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Add a test case demonstrating the collation problem with constant propagation.

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FossilOrigin-Name: 50add839fd95665bd67a6ae5de8346fd09e83904bbcbad26fad280dff86d9e93
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drh 2018-07-26 23:54:19 +00:00
parent 24e1116e0f
commit 7de7602eb7
3 changed files with 23 additions and 7 deletions
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manifest
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@ -1,5 +1,5 @@
C Generalize\sthe\sconstant\spropagation\soptimization\sso\sthat\sit\sapplies\son\severy\nWHERE\sclose,\snot\sjust\sthose\sthat\scontain\sa\ssubquery.\s\sThis\sthen\sdemonstrates\nthat\sthe\scurrent\simplementation\sis\sinadequate\ssince\sit\sdoes\snot\stake\sinto\naccount\scollating\ssequences.
D 2018-07-26T23:47:11.108
C Add\sa\stest\scase\sdemonstrating\sthe\scollation\sproblem\swith\sconstant\spropagation.
D 2018-07-26T23:54:19.662
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F Makefile.in 0a3a6c81e6fcb969ff9106e882f0a08547014ba463cb6beca4c4efaecc924ee6
@ -1617,7 +1617,7 @@ F test/whereH.test e4b07f7a3c2f5d31195cd33710054c78667573b2
F test/whereI.test b7769ee8dbefd987fb266715fee887f05f9ff180016b06fca7fa402df739193b
F test/whereJ.test 88287550f6ee604422403b053455b1ad894eeaa5c35d348532dfa1439286cb9a
F test/whereK.test f8e3cf26a8513ecc7f514f54df9f0572c046c42b
F test/whereL.test eca38f3f9e056bec962c3cf9abb8825a1701311a3fdc281471460cc127618714
F test/whereL.test 786ae3e0b6d8f7c9b83a98bffcd9d458b0de47c6a9f9dcf872043f54a4752c68
F test/wherefault.test 1374c3aa198388925246475f84ad4cd5f9528864
F test/wherelfault.test 9012e4ef5259058b771606616bd007af5d154e64cc25fa9fd4170f6411db44e3
F test/wherelimit.test 592081800806d297dd7449b1030c863d2883d6d42901837ccd2e5a9bd962edb0
@ -1753,7 +1753,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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57eb2abd5b270d65be5e0f138f0d46899fa6091df3ba20b0ea7ef04244a15d48
50add839fd95665bd67a6ae5de8346fd09e83904bbcbad26fad280dff86d9e93

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test/whereL.test
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@ -51,4 +51,20 @@ do_eqp_test 120 {
`--SCAN TABLE t3
}
# Constant propagation in the face of collating sequences:
#
do_execsql_test 200 {
CREATE TABLE c3(x COLLATE binary, y COLLATE nocase, z COLLATE binary);
CREATE INDEX c3x ON c3(x);
INSERT INTO c3 VALUES('ABC', 'ABC', 'abc');
SELECT * FROM c3 WHERE x=y AND y=z AND z='abc';
} {ABC ABC abc}
# If the constants are blindly propagated, as shown in the following
# query, the wrong answer results:
#
do_execsql_test 201 {
SELECT * FROM c3 WHERE x='abc' AND y='abc' AND z='abc';
} {}
finish_test