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Unified Diff: third_party/sqlite/sqlite-src-3080704/test/analyze9.test

Issue 949043002: Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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Index: third_party/sqlite/sqlite-src-3080704/test/analyze9.test
diff --git a/third_party/sqlite/sqlite-src-3080704/test/analyze9.test b/third_party/sqlite/sqlite-src-3080704/test/analyze9.test
new file mode 100644
index 0000000000000000000000000000000000000000..8572cbea0044a58f3bcb131c58c49f61f4b38562
--- /dev/null
+++ b/third_party/sqlite/sqlite-src-3080704/test/analyze9.test
@@ -0,0 +1,1137 @@
+# 2013 August 3
+#
+# The author disclaims copyright to this source code. In place of
+# a legal notice, here is a blessing:
+#
+# May you do good and not evil.
+# May you find forgiveness for yourself and forgive others.
+# May you share freely, never taking more than you give.
+#
+#***********************************************************************
+#
+# This file contains automated tests used to verify that the sqlite_stat4
+# functionality is working.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix analyze9
+
+ifcapable !stat4 {
+ finish_test
+ return
+}
+
+proc s {blob} {
+ set ret ""
+ binary scan $blob c* bytes
+ foreach b $bytes {
+ set t [binary format c $b]
+ if {[string is print $t]} {
+ append ret $t
+ } else {
+ append ret .
+ }
+ }
+ return $ret
+}
+db function s s
+
+do_execsql_test 1.0 {
+ CREATE TABLE t1(a TEXT, b TEXT);
+ INSERT INTO t1 VALUES('(0)', '(0)');
+ INSERT INTO t1 VALUES('(1)', '(1)');
+ INSERT INTO t1 VALUES('(2)', '(2)');
+ INSERT INTO t1 VALUES('(3)', '(3)');
+ INSERT INTO t1 VALUES('(4)', '(4)');
+ CREATE INDEX i1 ON t1(a, b);
+} {}
+
+
+do_execsql_test 1.1 {
+ ANALYZE;
+} {}
+
+do_execsql_test 1.2 {
+ SELECT tbl,idx,nEq,nLt,nDLt,test_decode(sample) FROM sqlite_stat4;
+} {
+ t1 i1 {1 1 1} {0 0 0} {0 0 0} {(0) (0) 1}
+ t1 i1 {1 1 1} {1 1 1} {1 1 1} {(1) (1) 2}
+ t1 i1 {1 1 1} {2 2 2} {2 2 2} {(2) (2) 3}
+ t1 i1 {1 1 1} {3 3 3} {3 3 3} {(3) (3) 4}
+ t1 i1 {1 1 1} {4 4 4} {4 4 4} {(4) (4) 5}
+}
+
+if {[permutation] != "utf16"} {
+ do_execsql_test 1.3 {
+ SELECT tbl,idx,nEq,nLt,nDLt,s(sample) FROM sqlite_stat4;
+ } {
+ t1 i1 {1 1 1} {0 0 0} {0 0 0} ....(0)(0)
+ t1 i1 {1 1 1} {1 1 1} {1 1 1} ....(1)(1).
+ t1 i1 {1 1 1} {2 2 2} {2 2 2} ....(2)(2).
+ t1 i1 {1 1 1} {3 3 3} {3 3 3} ....(3)(3).
+ t1 i1 {1 1 1} {4 4 4} {4 4 4} ....(4)(4).
+ }
+}
+
+
+#-------------------------------------------------------------------------
+# This is really just to test SQL user function "test_decode".
+#
+reset_db
+do_execsql_test 2.1 {
+ CREATE TABLE t1(a, b, c);
+ INSERT INTO t1 VALUES('some text', 14, NULL);
+ INSERT INTO t1 VALUES(22.0, NULL, x'656667');
+ CREATE INDEX i1 ON t1(a, b, c);
+ ANALYZE;
+ SELECT test_decode(sample) FROM sqlite_stat4;
+} {
+ {22.0 NULL x'656667' 2}
+ {{some text} 14 NULL 1}
+}
+
+#-------------------------------------------------------------------------
+#
+reset_db
+do_execsql_test 3.1 {
+ CREATE TABLE t2(a, b);
+ CREATE INDEX i2 ON t2(a, b);
+ BEGIN;
+}
+
+do_test 3.2 {
+ for {set i 0} {$i < 1000} {incr i} {
+ set a [expr $i / 10]
+ set b [expr int(rand() * 15.0)]
+ execsql { INSERT INTO t2 VALUES($a, $b) }
+ }
+ execsql COMMIT
+} {}
+
+db func lindex lindex
+
+# Each value of "a" occurs exactly 10 times in the table.
+#
+do_execsql_test 3.3.1 {
+ SELECT count(*) FROM t2 GROUP BY a;
+} [lrange [string repeat "10 " 100] 0 99]
+
+# The first element in the "nEq" list of all samples should therefore be 10.
+#
+do_execsql_test 3.3.2 {
+ ANALYZE;
+ SELECT lindex(nEq, 0) FROM sqlite_stat4;
+} [lrange [string repeat "10 " 100] 0 23]
+
+#-------------------------------------------------------------------------
+#
+do_execsql_test 3.4 {
+ DROP TABLE IF EXISTS t1;
+ CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
+ INSERT INTO t1 VALUES(1, 1, 'one-a');
+ INSERT INTO t1 VALUES(11, 1, 'one-b');
+ INSERT INTO t1 VALUES(21, 1, 'one-c');
+ INSERT INTO t1 VALUES(31, 1, 'one-d');
+ INSERT INTO t1 VALUES(41, 1, 'one-e');
+ INSERT INTO t1 VALUES(51, 1, 'one-f');
+ INSERT INTO t1 VALUES(61, 1, 'one-g');
+ INSERT INTO t1 VALUES(71, 1, 'one-h');
+ INSERT INTO t1 VALUES(81, 1, 'one-i');
+ INSERT INTO t1 VALUES(91, 1, 'one-j');
+ INSERT INTO t1 SELECT a+1,2,'two' || substr(c,4) FROM t1;
+ INSERT INTO t1 SELECT a+2,3,'three'||substr(c,4) FROM t1 WHERE c GLOB 'one-*';
+ INSERT INTO t1 SELECT a+3,4,'four'||substr(c,4) FROM t1 WHERE c GLOB 'one-*';
+ INSERT INTO t1 SELECT a+4,5,'five'||substr(c,4) FROM t1 WHERE c GLOB 'one-*';
+ INSERT INTO t1 SELECT a+5,6,'six'||substr(c,4) FROM t1 WHERE c GLOB 'one-*';
+ CREATE INDEX t1b ON t1(b);
+ ANALYZE;
+ SELECT c FROM t1 WHERE b=3 AND a BETWEEN 30 AND 60;
+} {three-d three-e three-f}
+
+
+#-------------------------------------------------------------------------
+# These tests verify that the sample selection for stat4 appears to be
+# working as designed.
+#
+
+reset_db
+db func lindex lindex
+db func lrange lrange
+
+do_execsql_test 4.0 {
+ DROP TABLE IF EXISTS t1;
+ CREATE TABLE t1(a, b, c);
+ CREATE INDEX i1 ON t1(c, b, a);
+}
+
+
+proc insert_filler_rows_n {iStart args} {
+ set A(-ncopy) 1
+ set A(-nval) 1
+
+ foreach {k v} $args {
+ if {[info exists A($k)]==0} { error "no such option: $k" }
+ set A($k) $v
+ }
+ if {[llength $args] % 2} {
+ error "option requires an argument: [lindex $args end]"
+ }
+
+ for {set i 0} {$i < $A(-nval)} {incr i} {
+ set iVal [expr $iStart+$i]
+ for {set j 0} {$j < $A(-ncopy)} {incr j} {
+ execsql { INSERT INTO t1 VALUES($iVal, $iVal, $iVal) }
+ }
+ }
+}
+
+do_test 4.1 {
+ execsql { BEGIN }
+ insert_filler_rows_n 0 -ncopy 10 -nval 19
+ insert_filler_rows_n 20 -ncopy 1 -nval 100
+
+ execsql {
+ INSERT INTO t1(c, b, a) VALUES(200, 1, 'a');
+ INSERT INTO t1(c, b, a) VALUES(200, 1, 'b');
+ INSERT INTO t1(c, b, a) VALUES(200, 1, 'c');
+
+ INSERT INTO t1(c, b, a) VALUES(200, 2, 'e');
+ INSERT INTO t1(c, b, a) VALUES(200, 2, 'f');
+
+ INSERT INTO t1(c, b, a) VALUES(201, 3, 'g');
+ INSERT INTO t1(c, b, a) VALUES(201, 4, 'h');
+
+ ANALYZE;
+ SELECT count(*) FROM sqlite_stat4;
+ SELECT count(*) FROM t1;
+ }
+} {24 297}
+
+do_execsql_test 4.2 {
+ SELECT
+ neq,
+ lrange(nlt, 0, 2),
+ lrange(ndlt, 0, 2),
+ lrange(test_decode(sample), 0, 2)
+ FROM sqlite_stat4
+ ORDER BY rowid LIMIT 16;
+} {
+ {10 10 10 1} {0 0 0} {0 0 0} {0 0 0}
+ {10 10 10 1} {10 10 10} {1 1 1} {1 1 1}
+ {10 10 10 1} {20 20 20} {2 2 2} {2 2 2}
+ {10 10 10 1} {30 30 30} {3 3 3} {3 3 3}
+ {10 10 10 1} {40 40 40} {4 4 4} {4 4 4}
+ {10 10 10 1} {50 50 50} {5 5 5} {5 5 5}
+ {10 10 10 1} {60 60 60} {6 6 6} {6 6 6}
+ {10 10 10 1} {70 70 70} {7 7 7} {7 7 7}
+ {10 10 10 1} {80 80 80} {8 8 8} {8 8 8}
+ {10 10 10 1} {90 90 90} {9 9 9} {9 9 9}
+ {10 10 10 1} {100 100 100} {10 10 10} {10 10 10}
+ {10 10 10 1} {110 110 110} {11 11 11} {11 11 11}
+ {10 10 10 1} {120 120 120} {12 12 12} {12 12 12}
+ {10 10 10 1} {130 130 130} {13 13 13} {13 13 13}
+ {10 10 10 1} {140 140 140} {14 14 14} {14 14 14}
+ {10 10 10 1} {150 150 150} {15 15 15} {15 15 15}
+}
+
+do_execsql_test 4.3 {
+ SELECT
+ neq,
+ lrange(nlt, 0, 2),
+ lrange(ndlt, 0, 2),
+ lrange(test_decode(sample), 0, 1)
+ FROM sqlite_stat4
+ ORDER BY rowid DESC LIMIT 2;
+} {
+ {2 1 1 1} {295 296 296} {120 122 125} {201 4}
+ {5 3 1 1} {290 290 290} {119 119 119} {200 1}
+}
+
+do_execsql_test 4.4 { SELECT count(DISTINCT c) FROM t1 WHERE c<201 } 120
+do_execsql_test 4.5 { SELECT count(DISTINCT c) FROM t1 WHERE c<200 } 119
+
+# Check that the perioidic samples are present.
+do_execsql_test 4.6 {
+ SELECT count(*) FROM sqlite_stat4
+ WHERE lindex(test_decode(sample), 3) IN
+ ('34', '68', '102', '136', '170', '204', '238', '272')
+} {8}
+
+reset_db
+do_test 4.7 {
+ execsql {
+ BEGIN;
+ CREATE TABLE t1(o,t INTEGER PRIMARY KEY);
+ CREATE INDEX i1 ON t1(o);
+ }
+ for {set i 0} {$i<10000} {incr i [expr (($i<1000)?1:10)]} {
+ execsql { INSERT INTO t1 VALUES('x', $i) }
+ }
+ execsql {
+ COMMIT;
+ ANALYZE;
+ SELECT count(*) FROM sqlite_stat4;
+ }
+} {8}
+do_execsql_test 4.8 {
+ SELECT test_decode(sample) FROM sqlite_stat4;
+} {
+ {x 211} {x 423} {x 635} {x 847}
+ {x 1590} {x 3710} {x 5830} {x 7950}
+}
+
+
+#-------------------------------------------------------------------------
+# The following would cause a crash at one point.
+#
+reset_db
+do_execsql_test 5.1 {
+ PRAGMA encoding = 'utf-16';
+ CREATE TABLE t0(v);
+ ANALYZE;
+}
+
+#-------------------------------------------------------------------------
+# This was also crashing (corrupt sqlite_stat4 table).
+#
+reset_db
+do_execsql_test 6.1 {
+ CREATE TABLE t1(a, b);
+ CREATE INDEX i1 ON t1(a);
+ CREATE INDEX i2 ON t1(b);
+ INSERT INTO t1 VALUES(1, 1);
+ INSERT INTO t1 VALUES(2, 2);
+ INSERT INTO t1 VALUES(3, 3);
+ INSERT INTO t1 VALUES(4, 4);
+ INSERT INTO t1 VALUES(5, 5);
+ ANALYZE;
+ PRAGMA writable_schema = 1;
+ CREATE TEMP TABLE x1 AS
+ SELECT tbl,idx,neq,nlt,ndlt,sample FROM sqlite_stat4
+ ORDER BY (rowid%5), rowid;
+ DELETE FROM sqlite_stat4;
+ INSERT INTO sqlite_stat4 SELECT * FROM x1;
+ PRAGMA writable_schema = 0;
+ ANALYZE sqlite_master;
+}
+do_execsql_test 6.2 {
+ SELECT * FROM t1 WHERE a = 'abc';
+}
+
+#-------------------------------------------------------------------------
+# The following tests experiment with adding corrupted records to the
+# 'sample' column of the sqlite_stat4 table.
+#
+reset_db
+sqlite3_db_config_lookaside db 0 0 0
+
+database_may_be_corrupt
+do_execsql_test 7.1 {
+ CREATE TABLE t1(a, b);
+ CREATE INDEX i1 ON t1(a, b);
+ INSERT INTO t1 VALUES(1, 1);
+ INSERT INTO t1 VALUES(2, 2);
+ INSERT INTO t1 VALUES(3, 3);
+ INSERT INTO t1 VALUES(4, 4);
+ INSERT INTO t1 VALUES(5, 5);
+ ANALYZE;
+ UPDATE sqlite_stat4 SET sample = X'' WHERE rowid = 1;
+ ANALYZE sqlite_master;
+}
+
+do_execsql_test 7.2 {
+ UPDATE sqlite_stat4 SET sample = X'FFFF';
+ ANALYZE sqlite_master;
+ SELECT * FROM t1 WHERE a = 1;
+} {1 1}
+
+do_execsql_test 7.3 {
+ ANALYZE;
+ UPDATE sqlite_stat4 SET neq = '0 0 0';
+ ANALYZE sqlite_master;
+ SELECT * FROM t1 WHERE a = 1;
+} {1 1}
+
+do_execsql_test 7.4 {
+ ANALYZE;
+ UPDATE sqlite_stat4 SET ndlt = '0 0 0';
+ ANALYZE sqlite_master;
+ SELECT * FROM t1 WHERE a = 3;
+} {3 3}
+
+do_execsql_test 7.5 {
+ ANALYZE;
+ UPDATE sqlite_stat4 SET nlt = '0 0 0';
+ ANALYZE sqlite_master;
+ SELECT * FROM t1 WHERE a = 5;
+} {5 5}
+
+database_never_corrupt
+
+#-------------------------------------------------------------------------
+#
+reset_db
+do_execsql_test 8.1 {
+ CREATE TABLE t1(x TEXT);
+ CREATE INDEX i1 ON t1(x);
+ INSERT INTO t1 VALUES('1');
+ INSERT INTO t1 VALUES('2');
+ INSERT INTO t1 VALUES('3');
+ INSERT INTO t1 VALUES('4');
+ ANALYZE;
+}
+do_execsql_test 8.2 {
+ SELECT * FROM t1 WHERE x = 3;
+} {3}
+
+#-------------------------------------------------------------------------
+# Check that the bug fixed by [91733bc485] really is fixed.
+#
+reset_db
+do_execsql_test 9.1 {
+ CREATE TABLE t1(a, b, c, d, e);
+ CREATE INDEX i1 ON t1(a, b, c, d);
+ CREATE INDEX i2 ON t1(e);
+}
+do_test 9.2 {
+ execsql BEGIN;
+ for {set i 0} {$i < 100} {incr i} {
+ execsql "INSERT INTO t1 VALUES('x', 'y', 'z', $i, [expr $i/2])"
+ }
+ for {set i 0} {$i < 20} {incr i} {
+ execsql "INSERT INTO t1 VALUES('x', 'y', 'z', 101, $i)"
+ }
+ for {set i 102} {$i < 200} {incr i} {
+ execsql "INSERT INTO t1 VALUES('x', 'y', 'z', $i, [expr $i/2])"
+ }
+ execsql COMMIT
+ execsql ANALYZE
+} {}
+
+do_eqp_test 9.3.1 {
+ SELECT * FROM t1 WHERE a='x' AND b='y' AND c='z' AND d=101 AND e=5;
+} {/t1 USING INDEX i2/}
+do_eqp_test 9.3.2 {
+ SELECT * FROM t1 WHERE a='x' AND b='y' AND c='z' AND d=99 AND e=5;
+} {/t1 USING INDEX i1/}
+
+set value_d [expr 101]
+do_eqp_test 9.4.1 {
+ SELECT * FROM t1 WHERE a='x' AND b='y' AND c='z' AND d=$value_d AND e=5
+} {/t1 USING INDEX i2/}
+set value_d [expr 99]
+do_eqp_test 9.4.2 {
+ SELECT * FROM t1 WHERE a='x' AND b='y' AND c='z' AND d=$value_d AND e=5
+} {/t1 USING INDEX i1/}
+
+#-------------------------------------------------------------------------
+# Check that the planner takes stat4 data into account when considering
+# "IS NULL" and "IS NOT NULL" constraints.
+#
+do_execsql_test 10.1.1 {
+ DROP TABLE IF EXISTS t3;
+ CREATE TABLE t3(a, b);
+ CREATE INDEX t3a ON t3(a);
+ CREATE INDEX t3b ON t3(b);
+}
+do_test 10.1.2 {
+ for {set i 1} {$i < 100} {incr i} {
+ if {$i>90} { set a $i } else { set a NULL }
+ set b [expr $i % 5]
+ execsql "INSERT INTO t3 VALUES($a, $b)"
+ }
+ execsql ANALYZE
+} {}
+do_eqp_test 10.1.3 {
+ SELECT * FROM t3 WHERE a IS NULL AND b = 2
+} {/t3 USING INDEX t3b/}
+do_eqp_test 10.1.4 {
+ SELECT * FROM t3 WHERE a IS NOT NULL AND b = 2
+} {/t3 USING INDEX t3a/}
+
+do_execsql_test 10.2.1 {
+ DROP TABLE IF EXISTS t3;
+ CREATE TABLE t3(x, a, b);
+ CREATE INDEX t3a ON t3(x, a);
+ CREATE INDEX t3b ON t3(x, b);
+}
+do_test 10.2.2 {
+ for {set i 1} {$i < 100} {incr i} {
+ if {$i>90} { set a $i } else { set a NULL }
+ set b [expr $i % 5]
+ execsql "INSERT INTO t3 VALUES('xyz', $a, $b)"
+ }
+ execsql ANALYZE
+} {}
+do_eqp_test 10.2.3 {
+ SELECT * FROM t3 WHERE x = 'xyz' AND a IS NULL AND b = 2
+} {/t3 USING INDEX t3b/}
+do_eqp_test 10.2.4 {
+ SELECT * FROM t3 WHERE x = 'xyz' AND a IS NOT NULL AND b = 2
+} {/t3 USING INDEX t3a/}
+
+#-------------------------------------------------------------------------
+# Check that stat4 data is used correctly with non-default collation
+# sequences.
+#
+foreach {tn schema} {
+ 1 {
+ CREATE TABLE t4(a COLLATE nocase, b);
+ CREATE INDEX t4a ON t4(a);
+ CREATE INDEX t4b ON t4(b);
+ }
+ 2 {
+ CREATE TABLE t4(a, b);
+ CREATE INDEX t4a ON t4(a COLLATE nocase);
+ CREATE INDEX t4b ON t4(b);
+ }
+} {
+ drop_all_tables
+ do_test 11.$tn.1 { execsql $schema } {}
+
+ do_test 11.$tn.2 {
+ for {set i 0} {$i < 100} {incr i} {
+ if { ($i % 10)==0 } { set a ABC } else { set a DEF }
+ set b [expr $i % 5]
+ execsql { INSERT INTO t4 VALUES($a, $b) }
+ }
+ execsql ANALYZE
+ } {}
+
+ do_eqp_test 11.$tn.3 {
+ SELECT * FROM t4 WHERE a = 'def' AND b = 3;
+ } {/t4 USING INDEX t4b/}
+
+ if {$tn==1} {
+ set sql "SELECT * FROM t4 WHERE a = 'abc' AND b = 3;"
+ do_eqp_test 11.$tn.4 $sql {/t4 USING INDEX t4a/}
+ } else {
+
+ set sql "SELECT * FROM t4 WHERE a = 'abc' COLLATE nocase AND b = 3;"
+ do_eqp_test 11.$tn.5 $sql {/t4 USING INDEX t4a/}
+
+ set sql "SELECT * FROM t4 WHERE a COLLATE nocase = 'abc' AND b = 3;"
+ do_eqp_test 11.$tn.6 $sql {/t4 USING INDEX t4a/}
+ }
+}
+
+foreach {tn schema} {
+ 1 {
+ CREATE TABLE t4(x, a COLLATE nocase, b);
+ CREATE INDEX t4a ON t4(x, a);
+ CREATE INDEX t4b ON t4(x, b);
+ }
+ 2 {
+ CREATE TABLE t4(x, a, b);
+ CREATE INDEX t4a ON t4(x, a COLLATE nocase);
+ CREATE INDEX t4b ON t4(x, b);
+ }
+} {
+ drop_all_tables
+ do_test 12.$tn.1 { execsql $schema } {}
+
+ do_test 12.$tn.2 {
+ for {set i 0} {$i < 100} {incr i} {
+ if { ($i % 10)==0 } { set a ABC } else { set a DEF }
+ set b [expr $i % 5]
+ execsql { INSERT INTO t4 VALUES(X'abcdef', $a, $b) }
+ }
+ execsql ANALYZE
+ } {}
+
+ do_eqp_test 12.$tn.3 {
+ SELECT * FROM t4 WHERE x=X'abcdef' AND a = 'def' AND b = 3;
+ } {/t4 USING INDEX t4b/}
+
+ if {$tn==1} {
+ set sql "SELECT * FROM t4 WHERE x=X'abcdef' AND a = 'abc' AND b = 3;"
+ do_eqp_test 12.$tn.4 $sql {/t4 USING INDEX t4a/}
+ } else {
+ set sql {
+ SELECT * FROM t4 WHERE x=X'abcdef' AND a = 'abc' COLLATE nocase AND b = 3
+ }
+ do_eqp_test 12.$tn.5 $sql {/t4 USING INDEX t4a/}
+ set sql {
+ SELECT * FROM t4 WHERE x=X'abcdef' AND a COLLATE nocase = 'abc' AND b = 3
+ }
+ do_eqp_test 12.$tn.6 $sql {/t4 USING INDEX t4a/}
+ }
+}
+
+#-------------------------------------------------------------------------
+# Check that affinities are taken into account when using stat4 data to
+# estimate the number of rows scanned by a rowid constraint.
+#
+drop_all_tables
+do_test 13.1 {
+ execsql {
+ CREATE TABLE t1(a, b, c, d);
+ CREATE INDEX i1 ON t1(a);
+ CREATE INDEX i2 ON t1(b, c);
+ }
+ for {set i 0} {$i<100} {incr i} {
+ if {$i %2} {set a abc} else {set a def}
+ execsql { INSERT INTO t1(rowid, a, b, c) VALUES($i, $a, $i, $i) }
+ }
+ execsql ANALYZE
+} {}
+do_eqp_test 13.2.1 {
+ SELECT * FROM t1 WHERE a='abc' AND rowid<15 AND b<12
+} {/SEARCH TABLE t1 USING INDEX i1/}
+do_eqp_test 13.2.2 {
+ SELECT * FROM t1 WHERE a='abc' AND rowid<'15' AND b<12
+} {/SEARCH TABLE t1 USING INDEX i1/}
+do_eqp_test 13.3.1 {
+ SELECT * FROM t1 WHERE a='abc' AND rowid<100 AND b<12
+} {/SEARCH TABLE t1 USING INDEX i2/}
+do_eqp_test 13.3.2 {
+ SELECT * FROM t1 WHERE a='abc' AND rowid<'100' AND b<12
+} {/SEARCH TABLE t1 USING INDEX i2/}
+
+#-------------------------------------------------------------------------
+# Check also that affinities are taken into account when using stat4 data
+# to estimate the number of rows scanned by any other constraint on a
+# column other than the leftmost.
+#
+drop_all_tables
+do_test 14.1 {
+ execsql { CREATE TABLE t1(a, b INTEGER, c) }
+ for {set i 0} {$i<100} {incr i} {
+ set c [expr $i % 3]
+ execsql { INSERT INTO t1 VALUES('ott', $i, $c) }
+ }
+ execsql {
+ CREATE INDEX i1 ON t1(a, b);
+ CREATE INDEX i2 ON t1(c);
+ ANALYZE;
+ }
+} {}
+do_eqp_test 13.2.1 {
+ SELECT * FROM t1 WHERE a='ott' AND b<10 AND c=1
+} {/SEARCH TABLE t1 USING INDEX i1/}
+do_eqp_test 13.2.2 {
+ SELECT * FROM t1 WHERE a='ott' AND b<'10' AND c=1
+} {/SEARCH TABLE t1 USING INDEX i1/}
+
+#-------------------------------------------------------------------------
+# By default, 16 non-periodic samples are collected for the stat4 table.
+# The following tests attempt to verify that the most common keys are
+# being collected.
+#
+proc check_stat4 {tn} {
+ db eval ANALYZE
+ db eval {SELECT a, b, c, d FROM t1} {
+ incr k($a)
+ incr k([list $a $b])
+ incr k([list $a $b $c])
+ if { [info exists k([list $a $b $c $d])]==0 } { incr nRow }
+ incr k([list $a $b $c $d])
+ }
+
+ set L [list]
+ foreach key [array names k] {
+ lappend L [list $k($key) $key]
+ }
+
+ set nSample $nRow
+ if {$nSample>16} {set nSample 16}
+
+ set nThreshold [lindex [lsort -decr -integer -index 0 $L] [expr $nSample-1] 0]
+ foreach key [array names k] {
+ if {$k($key)>$nThreshold} {
+ set expect($key) 1
+ }
+ if {$k($key)==$nThreshold} {
+ set possible($key) 1
+ }
+ }
+
+
+ set nPossible [expr $nSample - [llength [array names expect]]]
+
+ #puts "EXPECT: [array names expect]"
+ #puts "POSSIBLE($nPossible/[array size possible]): [array names possible]"
+ #puts "HAVE: [db eval {SELECT test_decode(sample) FROM sqlite_stat4 WHERE idx='i1'}]"
+
+ db eval {SELECT test_decode(sample) AS s FROM sqlite_stat4 WHERE idx='i1'} {
+ set seen 0
+ for {set i 0} {$i<4} {incr i} {
+ unset -nocomplain expect([lrange $s 0 $i])
+ if {[info exists possible([lrange $s 0 $i])]} {
+ set seen 1
+ unset -nocomplain possible([lrange $s 0 $i])
+ }
+ }
+ if {$seen} {incr nPossible -1}
+ }
+ if {$nPossible<0} {set nPossible 0}
+
+ set res [list [llength [array names expect]] $nPossible]
+ uplevel [list do_test $tn [list set {} $res] {0 0}]
+}
+
+drop_all_tables
+do_test 14.1.1 {
+ execsql {
+ CREATE TABLE t1(a,b,c,d);
+ CREATE INDEX i1 ON t1(a,b,c,d);
+ }
+ for {set i 0} {$i < 160} {incr i} {
+ execsql { INSERT INTO t1 VALUES($i,$i,$i,$i) }
+ if {($i % 10)==0} { execsql { INSERT INTO t1 VALUES($i,$i,$i,$i) } }
+ }
+} {}
+check_stat4 14.1.2
+
+do_test 14.2.1 {
+ execsql { DELETE FROM t1 }
+ for {set i 0} {$i < 1600} {incr i} {
+ execsql { INSERT INTO t1 VALUES($i/10,$i/17,$i/27,$i/37) }
+ }
+} {}
+check_stat4 14.2.2
+
+do_test 14.3.1 {
+ for {set i 0} {$i < 10} {incr i} {
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ execsql { INSERT INTO t1 VALUES($i*50,$i*50,$i*50,$i*50) }
+ }
+} {}
+check_stat4 14.3.2
+
+do_test 14.4.1 {
+ execsql {DELETE FROM t1}
+ for {set i 1} {$i < 160} {incr i} {
+ set b [expr $i % 10]
+ if {$b==0 || $b==2} {set b 1}
+ execsql { INSERT INTO t1 VALUES($i/10,$b,$i,$i) }
+ }
+} {}
+check_stat4 14.4.2
+db func lrange lrange
+db func lindex lindex
+do_execsql_test 14.4.3 {
+ SELECT lrange(test_decode(sample), 0, 1) AS s FROM sqlite_stat4
+ WHERE lindex(s, 1)=='1' ORDER BY rowid
+} {
+ {0 1} {1 1} {2 1} {3 1}
+ {4 1} {5 1} {6 1} {7 1}
+ {8 1} {9 1} {10 1} {11 1}
+ {12 1} {13 1} {14 1} {15 1}
+}
+
+#-------------------------------------------------------------------------
+# Test that nothing untoward happens if the stat4 table contains entries
+# for indexes that do not exist. Or NULL values in the idx column.
+# Or NULL values in any of the other columns.
+#
+drop_all_tables
+do_execsql_test 15.1 {
+ CREATE TABLE x1(a, b, UNIQUE(a, b));
+ INSERT INTO x1 VALUES(1, 2);
+ INSERT INTO x1 VALUES(3, 4);
+ INSERT INTO x1 VALUES(5, 6);
+ ANALYZE;
+ INSERT INTO sqlite_stat4 VALUES(NULL, NULL, NULL, NULL, NULL, NULL);
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.2 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+do_execsql_test 15.3 {
+ INSERT INTO sqlite_stat4 VALUES(42, 42, 42, 42, 42, 42);
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.4 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+do_execsql_test 15.5 {
+ UPDATE sqlite_stat1 SET stat = NULL;
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.6 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+do_execsql_test 15.7 {
+ ANALYZE;
+ UPDATE sqlite_stat1 SET tbl = 'no such tbl';
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.8 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+do_execsql_test 15.9 {
+ ANALYZE;
+ UPDATE sqlite_stat4 SET neq = NULL, nlt=NULL, ndlt=NULL;
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.10 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+# This is just for coverage....
+do_execsql_test 15.11 {
+ ANALYZE;
+ UPDATE sqlite_stat1 SET stat = stat || ' unordered';
+}
+db close
+sqlite3 db test.db
+do_execsql_test 15.12 { SELECT * FROM x1 } {1 2 3 4 5 6}
+
+#-------------------------------------------------------------------------
+# Test that allocations used for sqlite_stat4 samples are included in
+# the quantity returned by SQLITE_DBSTATUS_SCHEMA_USED.
+#
+set one [string repeat x 1000]
+set two [string repeat x 2000]
+do_test 16.1 {
+ reset_db
+ execsql {
+ CREATE TABLE t1(a, UNIQUE(a));
+ INSERT INTO t1 VALUES($one);
+ ANALYZE;
+ }
+ set nByte [lindex [sqlite3_db_status db SCHEMA_USED 0] 1]
+
+ reset_db
+ execsql {
+ CREATE TABLE t1(a, UNIQUE(a));
+ INSERT INTO t1 VALUES($two);
+ ANALYZE;
+ }
+ set nByte2 [lindex [sqlite3_db_status db SCHEMA_USED 0] 1]
+ puts -nonewline " (nByte=$nByte nByte2=$nByte2)"
+
+ expr {$nByte2 > $nByte+900 && $nByte2 < $nByte+1100}
+} {1}
+
+#-------------------------------------------------------------------------
+# Test that stat4 data may be used with partial indexes.
+#
+do_test 17.1 {
+ reset_db
+ execsql {
+ CREATE TABLE t1(a, b, c, d);
+ CREATE INDEX i1 ON t1(a, b) WHERE d IS NOT NULL;
+ INSERT INTO t1 VALUES(-1, -1, -1, NULL);
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ INSERT INTO t1 SELECT 2*a,2*b,2*c,d FROM t1;
+ }
+
+ for {set i 0} {$i < 32} {incr i} {
+ if {$i<8} {set b 0} else { set b $i }
+ execsql { INSERT INTO t1 VALUES($i%2, $b, $i/2, 'abc') }
+ }
+ execsql {ANALYZE main.t1}
+} {}
+
+do_catchsql_test 17.1.2 {
+ ANALYZE temp.t1;
+} {1 {no such table: temp.t1}}
+
+do_eqp_test 17.2 {
+ SELECT * FROM t1 WHERE d IS NOT NULL AND a=0 AND b=10 AND c=10;
+} {/USING INDEX i1/}
+do_eqp_test 17.3 {
+ SELECT * FROM t1 WHERE d IS NOT NULL AND a=0 AND b=0 AND c=10;
+} {/USING INDEX i1/}
+
+do_execsql_test 17.4 {
+ CREATE INDEX i2 ON t1(c, d);
+ ANALYZE main.i2;
+}
+do_eqp_test 17.5 {
+ SELECT * FROM t1 WHERE d IS NOT NULL AND a=0 AND b=10 AND c=10;
+} {/USING INDEX i1/}
+do_eqp_test 17.6 {
+ SELECT * FROM t1 WHERE d IS NOT NULL AND a=0 AND b=0 AND c=10;
+} {/USING INDEX i2/}
+
+#-------------------------------------------------------------------------
+#
+do_test 18.1 {
+ reset_db
+ execsql {
+ CREATE TABLE t1(a, b);
+ CREATE INDEX i1 ON t1(a, b);
+ }
+ for {set i 0} {$i < 9} {incr i} {
+ execsql {
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ INSERT INTO t1 VALUES($i, 0);
+ }
+ }
+ execsql ANALYZE
+ execsql { SELECT count(*) FROM sqlite_stat4 }
+} {9}
+
+#-------------------------------------------------------------------------
+# For coverage.
+#
+ifcapable view {
+ do_test 19.1 {
+ reset_db
+ execsql {
+ CREATE TABLE t1(x, y);
+ CREATE INDEX i1 ON t1(x, y);
+ CREATE VIEW v1 AS SELECT * FROM t1;
+ ANALYZE;
+ }
+ } {}
+}
+ifcapable auth {
+ proc authproc {op args} {
+ if {$op == "SQLITE_ANALYZE"} { return "SQLITE_DENY" }
+ return "SQLITE_OK"
+ }
+ do_test 19.2 {
+ reset_db
+ db auth authproc
+ execsql {
+ CREATE TABLE t1(x, y);
+ CREATE VIEW v1 AS SELECT * FROM t1;
+ }
+ catchsql ANALYZE
+ } {1 {not authorized}}
+}
+
+#-------------------------------------------------------------------------
+#
+reset_db
+proc r {args} { expr rand() }
+db func r r
+db func lrange lrange
+do_test 20.1 {
+ execsql {
+ CREATE TABLE t1(a,b,c,d);
+ CREATE INDEX i1 ON t1(a,b,c,d);
+ }
+ for {set i 0} {$i < 16} {incr i} {
+ execsql {
+ INSERT INTO t1 VALUES($i, r(), r(), r());
+ INSERT INTO t1 VALUES($i, $i, r(), r());
+ INSERT INTO t1 VALUES($i, $i, $i, r());
+ INSERT INTO t1 VALUES($i, $i, $i, $i);
+ INSERT INTO t1 VALUES($i, $i, $i, $i);
+ INSERT INTO t1 VALUES($i, $i, $i, r());
+ INSERT INTO t1 VALUES($i, $i, r(), r());
+ INSERT INTO t1 VALUES($i, r(), r(), r());
+ }
+ }
+} {}
+do_execsql_test 20.2 { ANALYZE }
+for {set i 0} {$i<16} {incr i} {
+ set val "$i $i $i $i"
+ do_execsql_test 20.3.$i {
+ SELECT count(*) FROM sqlite_stat4
+ WHERE lrange(test_decode(sample), 0, 3)=$val
+ } {1}
+}
+
+#-------------------------------------------------------------------------
+#
+reset_db
+
+do_execsql_test 21.0 {
+ CREATE TABLE t2(a, b);
+ CREATE INDEX i2 ON t2(a);
+}
+
+do_test 21.1 {
+ for {set i 1} {$i < 100} {incr i} {
+ execsql {
+ INSERT INTO t2 VALUES(CASE WHEN $i < 80 THEN 'one' ELSE 'two' END, $i)
+ }
+ }
+ execsql ANALYZE
+} {}
+
+# Condition (a='one') matches 80% of the table. (rowid<10) reduces this to
+# 10%, but (rowid<50) only reduces it to 50%. So in the first case below
+# the index is used. In the second, it is not.
+#
+do_eqp_test 21.2 {
+ SELECT * FROM t2 WHERE a='one' AND rowid < 10
+} {/*USING INDEX i2 (a=? AND rowid<?)*/}
+do_eqp_test 21.3 {
+ SELECT * FROM t2 WHERE a='one' AND rowid < 50
+} {/*USING INTEGER PRIMARY KEY*/}
+
+#-------------------------------------------------------------------------
+#
+reset_db
+do_execsql_test 22.0 {
+ CREATE TABLE t3(a, b, c, d, PRIMARY KEY(a, b)) WITHOUT ROWID;
+}
+do_execsql_test 22.1 {
+ WITH r(x) AS (
+ SELECT 1
+ UNION ALL
+ SELECT x+1 FROM r WHERE x<=100
+ )
+
+ INSERT INTO t3 SELECT
+ CASE WHEN (x>45 AND x<96) THEN 'B' ELSE 'A' END, /* Column "a" */
+ x, /* Column "b" */
+ CASE WHEN (x<51) THEN 'one' ELSE 'two' END, /* Column "c" */
+ x /* Column "d" */
+ FROM r;
+
+ CREATE INDEX i3 ON t3(c);
+ CREATE INDEX i4 ON t3(d);
+ ANALYZE;
+}
+
+# Expression (c='one' AND a='B') matches 5 table rows. But (c='one' AND a=A')
+# matches 45. Expression (d<?) matches 20. Neither index is a covering index.
+#
+# Therefore, with stat4 data, SQLite prefers (c='one' AND a='B') over (d<20),
+# and (d<20) over (c='one' AND a='A').
+foreach {tn where res} {
+ 1 "c='one' AND a='B' AND d < 20" {/*INDEX i3 (c=? AND a=?)*/}
+ 2 "c='one' AND a='A' AND d < 20" {/*INDEX i4 (d<?)*/}
+} {
+ do_eqp_test 22.2.$tn "SELECT * FROM t3 WHERE $where" $res
+}
+
+proc int_to_char {i} {
+ set ret ""
+ set char [list a b c d e f g h i j]
+ foreach {div} {1000 100 10 1} {
+ append ret [lindex $char [expr ($i / $div) % 10]]
+ }
+ set ret
+}
+db func int_to_char int_to_char
+
+do_execsql_test 23.0 {
+ CREATE TABLE t4(
+ a COLLATE nocase, b, c,
+ d, e, f,
+ PRIMARY KEY(c, b, a)
+ ) WITHOUT ROWID;
+ CREATE INDEX i41 ON t4(e);
+ CREATE INDEX i42 ON t4(f);
+
+ WITH data(a, b, c, d, e, f) AS (
+ SELECT int_to_char(0), 'xyz', 'zyx', '*', 0, 0
+ UNION ALL
+ SELECT
+ int_to_char(f+1), b, c, d, (e+1) % 2, f+1
+ FROM data WHERE f<1024
+ )
+ INSERT INTO t4 SELECT a, b, c, d, e, f FROM data;
+ ANALYZE;
+} {}
+
+do_eqp_test 23.1 {
+ SELECT * FROM t4 WHERE
+ (e=1 AND b='xyz' AND c='zyx' AND a<'AEA') AND f<300
+} {
+ 0 0 0 {SEARCH TABLE t4 USING INDEX i41 (e=? AND c=? AND b=? AND a<?)}
+}
+do_eqp_test 23.2 {
+ SELECT * FROM t4 WHERE
+ (e=1 AND b='xyz' AND c='zyx' AND a<'JJJ') AND f<300
+} {
+ 0 0 0 {SEARCH TABLE t4 USING INDEX i42 (f<?)}
+}
+
+do_execsql_test 24.0 {
+ CREATE TABLE t5(c, d, b, e, a, PRIMARY KEY(a, b, c)) WITHOUT ROWID;
+ WITH data(a, b, c, d, e) AS (
+ SELECT 'z', 'y', 0, 0, 0
+ UNION ALL
+ SELECT
+ a, CASE WHEN b='y' THEN 'n' ELSE 'y' END, c+1, e/250, e+1
+ FROM data
+ WHERE e<1000
+ )
+ INSERT INTO t5(a, b, c, d, e) SELECT * FROM data;
+ CREATE INDEX t5d ON t5(d);
+ CREATE INDEX t5e ON t5(e);
+ ANALYZE;
+}
+
+foreach {tn where eqp} {
+ 1 "d=0 AND a='z' AND b='n' AND e<200" {/*t5d (d=? AND a=? AND b=?)*/}
+ 2 "d=0 AND a='z' AND b='n' AND e<100" {/*t5e (e<?)*/}
+
+ 3 "d=0 AND e<300" {/*t5d (d=?)*/}
+ 4 "d=0 AND e<200" {/*t5e (e<?)*/}
+} {
+ do_eqp_test 24.$tn "SeLeCt * FROM t5 WHERE $where" $eqp
+}
+
+#-------------------------------------------------------------------------
+# Test that if stat4 data is available but cannot be used because the
+# rhs of a range constraint is a complex expression, the default estimates
+# are used instead.
+ifcapable stat4&&cte {
+ do_execsql_test 25.1 {
+ CREATE TABLE t6(a, b);
+ WITH ints(i,j) AS (
+ SELECT 1,1 UNION ALL SELECT i+1,j+1 FROM ints WHERE i<100
+ ) INSERT INTO t6 SELECT * FROM ints;
+ CREATE INDEX aa ON t6(a);
+ CREATE INDEX bb ON t6(b);
+ ANALYZE;
+ }
+
+ # Term (b<?) is estimated at 25%. Better than (a<30) but not as
+ # good as (a<20).
+ do_eqp_test 25.2.1 { SELECT * FROM t6 WHERE a<30 AND b<? } {
+ 0 0 0 {SEARCH TABLE t6 USING INDEX bb (b<?)}
+ }
+ do_eqp_test 25.2.2 { SELECT * FROM t6 WHERE a<20 AND b<? } {
+ 0 0 0 {SEARCH TABLE t6 USING INDEX aa (a<?)}
+ }
+
+ # Term (b BETWEEN ? AND ?) is estimated at 1/64.
+ do_eqp_test 25.3.1 {
+ SELECT * FROM t6 WHERE a BETWEEN 5 AND 10 AND b BETWEEN ? AND ?
+ } {
+ 0 0 0 {SEARCH TABLE t6 USING INDEX bb (b>? AND b<?)}
+ }
+
+ # Term (b BETWEEN ? AND 60) is estimated to return roughly 15 rows -
+ # 60 from (b<=60) multiplied by 0.25 for the b>=? term. Better than
+ # (a<20) but not as good as (a<10).
+ do_eqp_test 25.4.1 {
+ SELECT * FROM t6 WHERE a < 10 AND (b BETWEEN ? AND 60)
+ } {
+ 0 0 0 {SEARCH TABLE t6 USING INDEX aa (a<?)}
+ }
+ do_eqp_test 25.4.2 {
+ SELECT * FROM t6 WHERE a < 20 AND (b BETWEEN ? AND 60)
+ } {
+ 0 0 0 {SEARCH TABLE t6 USING INDEX bb (b>? AND b<?)}
+ }
+}
+
+finish_test
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