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Ignore likelihood() values on indexed IPK lookups.

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FossilOrigin-Name: 5bb7757a7b32a74482d3e93e9c9eea02273fe981
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dan
2014-04-29 16:10:22 +00:00
parent 67a03cfd6e
commit 09e1df6c00
4 changed files with 31 additions and 23 deletions
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36
test/cost.test
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@ -66,10 +66,10 @@ do_eqp_test 3.2 {
#-------------------------------------------------------------------------
# If there is no likelihood() or stat3 data, SQLite assumes that a closed
# range scan (e.g. one constrained by "col BETWEEN ? AND ?" constraint)
# visits 1/16 of the rows in a table.
# visits 1/64 of the rows in a table.
#
# Note: 1/17 =~ 0.058
# Note: 1/15 =~ 0.067
# Note: 1/63 =~ 0.016
# Note: 1/65 =~ 0.015
#
reset_db
do_execsql_test 4.1 {
@ -78,12 +78,12 @@ do_execsql_test 4.1 {
CREATE INDEX i2 ON t1(b);
}
do_eqp_test 4.2 {
SELECT * FROM t1 WHERE likelihood(a=?, 0.058) AND b BETWEEN ? AND ?;
SELECT * FROM t1 WHERE likelihood(a=?, 0.014) AND b BETWEEN ? AND ?;
} {
0 0 0 {SEARCH TABLE t1 USING INDEX i1 (a=?)}
}
do_eqp_test 4.3 {
SELECT * FROM t1 WHERE likelihood(a=?, 0.067) AND b BETWEEN ? AND ?;
SELECT * FROM t1 WHERE likelihood(a=?, 0.016) AND b BETWEEN ? AND ?;
} {
0 0 0 {SEARCH TABLE t1 USING INDEX i2 (b>? AND b<?)}
}
@ -100,14 +100,13 @@ do_execsql_test 5.1 {
do_eqp_test 5.2 {
SELECT * FROM t2 ORDER BY x, y;
} {}
#exit
# TODO: Check this one out!!
# set sqlite_where_trace 0xfff
do_eqp_test 5.3 {
SELECT * FROM t2 WHERE x BETWEEN ? AND ? ORDER BY rowid;
} {}
#exit
} {
0 0 0 {SEARCH TABLE t2 USING INDEX t2i1 (x>? AND x<?)}
0 0 0 {USE TEMP B-TREE FOR ORDER BY}
}
# where7.test, where8.test:
#
@ -117,11 +116,12 @@ do_execsql_test 6.1 {
CREATE INDEX t3i2 ON t3(c);
}
#set sqlite_where_trace 0xfff
# eqp.test
do_eqp_test 6.2 {
SELECT a FROM t3 WHERE (b BETWEEN 2 AND 4) OR c=100 ORDER BY a
} {
0 0 0 {SEARCH TABLE t3 USING INDEX t3i1 (b>? AND b<?)}
0 0 0 {SEARCH TABLE t3 USING INDEX t3i2 (c=?)}
0 0 0 {USE TEMP B-TREE FOR ORDER BY}
}
#-------------------------------------------------------------------------
@ -142,6 +142,9 @@ do_eqp_test 7.2 {
WHERE (b>=950 AND b<=1010) OR (b IS NULL AND c NOT NULL)
ORDER BY a
} {
0 0 0 {SEARCH TABLE t1 USING INDEX t1b (b>? AND b<?)}
0 0 0 {SEARCH TABLE t1 USING INDEX t1b (b=?)}
0 0 0 {USE TEMP B-TREE FOR ORDER BY}
}
#set sqlite_where_trace 0xfff
@ -150,8 +153,9 @@ do_eqp_test 7.3 {
WHERE (+b IS NULL AND c NOT NULL AND d NOT NULL)
OR (b NOT NULL AND c IS NULL AND d NOT NULL)
OR (b NOT NULL AND c NOT NULL AND d IS NULL)
} {}
#exit
} {
0 0 0 {SCAN TABLE t1}
}
#-------------------------------------------------------------------------
#
@ -182,6 +186,10 @@ do_eqp_test 8.2 {
AND unlikely(composer.cid=track.cid)
AND unlikely(album.aid=track.aid);
} {
0 0 2 {SCAN TABLE track}
0 1 0 {SEARCH TABLE album USING INTEGER PRIMARY KEY (rowid=?)}
0 2 1 {SEARCH TABLE composer USING INTEGER PRIMARY KEY (rowid=?)}
0 0 0 {USE TEMP B-TREE FOR DISTINCT}
}
finish_test