[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/scanstatus.test

Index: third_party/sqlite/sqlite-src-3170000/test/scanstatus.test
diff --git a/third_party/sqlite/sqlite-src-3170000/test/scanstatus.test b/third_party/sqlite/sqlite-src-3170000/test/scanstatus.test
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index 0000000000000000000000000000000000000000..ed24d9743710cff66b630a3f796e9ff9bd3504a5
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+# 2014 November 1
+#
+# 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.
+#
+#***********************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix scanstatus
+
+ifcapable !scanstatus {
+  finish_test
+  return
+}
+
+do_execsql_test 1.0 {
+  CREATE TABLE t1(a, b);
+  CREATE TABLE t2(x, y);
+  INSERT INTO t1 VALUES(1, 2);
+  INSERT INTO t1 VALUES(3, 4);
+  INSERT INTO t2 VALUES('a', 'b');
+  INSERT INTO t2 VALUES('c', 'd');
+  INSERT INTO t2 VALUES('e', 'f');
+}
+
+proc do_scanstatus_test {tn res} {
+  set stmt [db_last_stmt_ptr db]
+  set idx 0
+  set ret [list]
+  while {1} {
+    set r [sqlite3_stmt_scanstatus $stmt $idx]
+    if {[llength $r]==0} break
+    lappend ret {*}$r
+    incr idx
+  }
+
+  uplevel [list do_test $tn [list set {} $ret] [list {*}$res]]
+}
+
+do_execsql_test 1.1 { SELECT count(*) FROM t1, t2; } 6
+do_scanstatus_test 1.2 {
+  nLoop 1 nVisit 2 nEst 1048576.0 zName t1 zExplain {SCAN TABLE t1}
+  nLoop 2 nVisit 6 nEst 1048576.0 zName t2 zExplain {SCAN TABLE t2}
+}
+
+do_execsql_test 1.3 {
+  ANALYZE;
+  SELECT count(*) FROM t1, t2;
+} 6
+do_scanstatus_test 1.4 {
+  nLoop 1 nVisit 2 nEst 2.0 zName t1 zExplain {SCAN TABLE t1}
+  nLoop 2 nVisit 6 nEst 3.0 zName t2 zExplain {SCAN TABLE t2}
+}
+
+do_execsql_test 1.5 { ANALYZE }
+do_execsql_test 1.6 {
+  SELECT count(*) FROM t1, t2 WHERE t2.rowid>1;
+} 4
+do_scanstatus_test 1.7 {
+  nLoop 1 nVisit 2 nEst 2.0 zName t2 zExplain 
+  {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid>?)}
+  nLoop 2 nVisit 4 nEst 2.0 zName t1 zExplain {SCAN TABLE t1}
+}
+
+do_execsql_test 1.8 {
+  SELECT count(*) FROM t1, t2 WHERE t2.rowid>1;
+} 4
+
+do_scanstatus_test 1.9 {
+  nLoop 2 nVisit 4 nEst 2.0 zName t2 zExplain 
+  {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid>?)}
+  nLoop 4 nVisit 8 nEst 2.0 zName t1 zExplain {SCAN TABLE t1}
+}
+
+do_test 1.9 {
+  sqlite3_stmt_scanstatus_reset [db_last_stmt_ptr db]
+} {}
+
+do_scanstatus_test 1.10 {
+  nLoop 0 nVisit 0 nEst 2.0 zName t2 zExplain 
+  {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid>?)}
+  nLoop 0 nVisit 0 nEst 2.0 zName t1 zExplain {SCAN TABLE t1}
+}
+
+#-------------------------------------------------------------------------
+# Try a few different types of scans.
+#
+reset_db
+do_execsql_test 2.1 {
+  CREATE TABLE x1(i INTEGER PRIMARY KEY, j);
+  INSERT INTO x1 VALUES(1, 'one');
+  INSERT INTO x1 VALUES(2, 'two');
+  INSERT INTO x1 VALUES(3, 'three');
+  INSERT INTO x1 VALUES(4, 'four');
+  CREATE INDEX x1j ON x1(j);
+
+  SELECT * FROM x1 WHERE i=2;
+} {2 two}
+
+do_scanstatus_test 2.2 {
+  nLoop 1 nVisit 1 nEst 1.0 zName x1 
+  zExplain {SEARCH TABLE x1 USING INTEGER PRIMARY KEY (rowid=?)}
+}
+
+do_execsql_test 2.3.1 {
+  SELECT * FROM x1 WHERE j='two'
+} {2 two}
+do_scanstatus_test 2.3.2 {
+  nLoop 1 nVisit 1 nEst 10.0 zName x1j 
+  zExplain {SEARCH TABLE x1 USING COVERING INDEX x1j (j=?)}
+}
+
+do_execsql_test 2.4.1 {
+  SELECT * FROM x1 WHERE j<'two'
+} {4 four 1 one 3 three}
+do_scanstatus_test 2.4.2 {
+  nLoop 1 nVisit 3 nEst 262144.0 zName x1j 
+  zExplain {SEARCH TABLE x1 USING COVERING INDEX x1j (j<?)}
+}
+
+do_execsql_test 2.5.1 {
+  SELECT * FROM x1 WHERE j>='two'
+} {2 two}
+do_scanstatus_test 2.5.2 {
+  nLoop 1 nVisit 1 nEst 262144.0 zName x1j 
+  zExplain {SEARCH TABLE x1 USING COVERING INDEX x1j (j>?)}
+}
+
+do_execsql_test 2.6.1 {
+  SELECT * FROM x1 WHERE j BETWEEN 'three' AND 'two'
+} {3 three 2 two}
+do_scanstatus_test 2.6.2 {
+  nLoop 1 nVisit 2 nEst 16384.0 zName x1j 
+  zExplain {SEARCH TABLE x1 USING COVERING INDEX x1j (j>? AND j<?)}
+}
+
+do_execsql_test 2.7.1 {
+  CREATE TABLE x2(i INTEGER, j, k);
+  INSERT INTO x2 SELECT i, j, i || ' ' || j FROM x1;
+  CREATE INDEX x2j ON x2(j);
+  CREATE INDEX x2ij ON x2(i, j);
+  SELECT * FROM x2 WHERE j BETWEEN 'three' AND 'two'
+} {3 three {3 three} 2 two {2 two}}
+
+do_scanstatus_test 2.7.2 {
+  nLoop 1 nVisit 2 nEst 16384.0 zName x2j 
+  zExplain {SEARCH TABLE x2 USING INDEX x2j (j>? AND j<?)}
+}
+
+do_execsql_test 2.8.1 {
+  SELECT * FROM x2 WHERE i=1 AND j='two'
+}
+do_scanstatus_test 2.8.2 {
+  nLoop 1 nVisit 0 nEst 8.0 zName x2ij 
+  zExplain {SEARCH TABLE x2 USING INDEX x2ij (i=? AND j=?)}
+}
+
+do_execsql_test 2.9.1 {
+  SELECT * FROM x2 WHERE i=5 AND j='two'
+}
+do_scanstatus_test 2.9.2 {
+  nLoop 1 nVisit 0 nEst 8.0 zName x2ij 
+  zExplain {SEARCH TABLE x2 USING INDEX x2ij (i=? AND j=?)}
+}
+
+do_execsql_test 2.10.1 {
+  SELECT * FROM x2 WHERE i=3 AND j='three'
+} {3 three {3 three}}
+do_scanstatus_test 2.10.2 {
+  nLoop 1 nVisit 1 nEst 8.0 zName x2ij 
+  zExplain {SEARCH TABLE x2 USING INDEX x2ij (i=? AND j=?)}
+}
+
+#-------------------------------------------------------------------------
+# Try with queries that use the OR optimization.
+#
+do_execsql_test 3.1 {
+  CREATE TABLE a1(a, b, c, d);
+  CREATE INDEX a1a ON a1(a);
+  CREATE INDEX a1bc ON a1(b, c);
+
+  WITH d(x) AS (SELECT 1 UNION ALL SELECT x+1 AS n FROM d WHERE n<=100)
+  INSERT INTO a1 SELECT x, x, x, x FROM d;
+}
+
+do_execsql_test 3.2.1 {
+  SELECT d FROM a1 WHERE (a=4 OR b=13)
+} {4 13}
+do_scanstatus_test 3.2.2 {
+  nLoop 1 nVisit 1 nEst 10.0 zName a1a 
+  zExplain {SEARCH TABLE a1 USING INDEX a1a (a=?)}
+  nLoop 1 nVisit 1 nEst 10.0 zName a1bc 
+  zExplain {SEARCH TABLE a1 USING INDEX a1bc (b=?)}
+}
+
+do_execsql_test 3.2.1 {
+  SELECT count(*) FROM a1 WHERE (a BETWEEN 4 AND 12) OR (b BETWEEN 40 AND 60)
+} {30}
+do_scanstatus_test 3.2.2 {
+  nLoop 1 nVisit 9 nEst 16384.0 zName a1a 
+  zExplain {SEARCH TABLE a1 USING INDEX a1a (a>? AND a<?)}
+  nLoop 1 nVisit 21 nEst 16384.0 zName a1bc
+  zExplain {SEARCH TABLE a1 USING INDEX a1bc (b>? AND b<?)}
+}
+
+do_execsql_test 3.3.1 {
+  SELECT count(*) FROM a1 AS x, a1 AS y 
+  WHERE (x.a BETWEEN 4 AND 12) AND (y.b BETWEEN 1 AND 10)
+} {90}
+do_scanstatus_test 3.2.2 {
+  nLoop 1 nVisit 10 nEst 16384.0 zName a1bc 
+  zExplain {SEARCH TABLE a1 AS y USING COVERING INDEX a1bc (b>? AND b<?)}
+  nLoop 10 nVisit 90 nEst 16384.0 zName a1a
+  zExplain {SEARCH TABLE a1 AS x USING COVERING INDEX a1a (a>? AND a<?)}
+}
+
+do_execsql_test 3.4.1 {
+  SELECT count(*) FROM a1 WHERE a IN (1, 5, 10, 15);
+} {4}
+do_scanstatus_test 3.4.2 {
+  nLoop 1 nVisit 4 nEst 40.0 zName a1a 
+  zExplain {SEARCH TABLE a1 USING COVERING INDEX a1a (a=?)}
+}
+
+do_execsql_test 3.4.1 {
+  SELECT count(*) FROM a1 WHERE rowid IN (1, 5, 10, 15);
+} {4}
+do_scanstatus_test 3.4.2 {
+  nLoop 1 nVisit 4 nEst 4.0 zName a1
+  zExplain {SEARCH TABLE a1 USING INTEGER PRIMARY KEY (rowid=?)}
+}
+
+#-------------------------------------------------------------------------
+# Test that scanstatus() data is not available for searches performed
+# by triggers.
+#
+# It is available for searches performed as part of FK processing, but 
+# not FK action processing.
+#
+do_execsql_test 4.0 {
+  CREATE TABLE t1(a, b, c);
+  CREATE TABLE t2(x PRIMARY KEY, y, z);
+  CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN
+    SELECT * FROM t2 WHERE x BETWEEN 20 AND 40;
+  END;
+  WITH d(x) AS (SELECT 1 UNION ALL SELECT x+1 AS n FROM d WHERE n<=100)
+  INSERT INTO t2 SELECT x, x*2, x*3 FROM d;
+}
+
+do_execsql_test    4.1.1 { INSERT INTO t1 VALUES(1, 2, 3); }
+do_scanstatus_test 4.1.2 { }
+
+do_execsql_test 4.2 {
+  CREATE TABLE p1(x PRIMARY KEY);
+  INSERT INTO p1 VALUES(1), (2), (3), (4);
+  CREATE TABLE c1(y REFERENCES p1);
+  INSERT INTO c1 VALUES(1), (2), (3);
+  PRAGMA foreign_keys=on;
+}
+do_execsql_test    4.2.1 { DELETE FROM p1 WHERE x=4 }
+do_scanstatus_test 4.2.2 { 
+  nLoop 1 nVisit 1 nEst 1.0 zName sqlite_autoindex_p1_1 
+  zExplain {SEARCH TABLE p1 USING INDEX sqlite_autoindex_p1_1 (x=?)}
+
+  nLoop 1 nVisit 3 nEst 262144.0 zName c1 zExplain {SCAN TABLE c1}
+}
+
+#-------------------------------------------------------------------------
+# Further tests of different scan types.
+#
+reset_db
+proc tochar {i} {
+  set alphabet {a b c d e f g h i j k l m n o p q r s t u v w x y z}
+  return [lindex $alphabet [expr $i % [llength $alphabet]]]
+}
+db func tochar tochar
+do_execsql_test 5.0 {
+  CREATE TABLE t1(a PRIMARY KEY, b, c);
+  INSERT INTO t1 VALUES(0, 1, 'a');
+  INSERT INTO t1 VALUES(1, 0, 'b');
+  INSERT INTO t1 VALUES(2, 1, 'c');
+  INSERT INTO t1 VALUES(3, 0, 'd');
+  INSERT INTO t1 VALUES(4, 1, 'e');
+  INSERT INTO t1 VALUES(5, 0, 'a');
+  INSERT INTO t1 VALUES(6, 1, 'b');
+  INSERT INTO t1 VALUES(7, 0, 'c');
+  INSERT INTO t1 VALUES(8, 1, 'd');
+  INSERT INTO t1 VALUES(9, 0, 'e');
+  CREATE INDEX t1bc ON t1(b, c);
+
+  CREATE TABLE t2(x, y);
+  CREATE INDEX t2xy ON t2(x, y);
+  WITH data(i, x, y) AS (
+    SELECT 0, 0, tochar(0) 
+    UNION ALL
+    SELECT i+1, (i+1)%2, tochar(i+1) FROM data WHERE i<500
+  ) INSERT INTO t2 SELECT x, y FROM data;
+
+  CREATE TABLE t3(x, y);
+  INSERT INTO t3 SELECT * FROM t2;
+
+  ANALYZE;
+}
+
+do_execsql_test 5.1.1 {
+  SELECT count(*) FROM t1 WHERE a IN (SELECT b FROM t1 AS ii)
+} {2}
+do_scanstatus_test 5.1.2 { 
+  nLoop 1 nVisit 10 nEst 10.0 zName t1bc 
+  zExplain {SCAN TABLE t1 AS ii USING COVERING INDEX t1bc}
+  nLoop 1 nVisit 2 nEst 8.0 zName sqlite_autoindex_t1_1
+  zExplain {SEARCH TABLE t1 USING COVERING INDEX sqlite_autoindex_t1_1 (a=?)}
+}
+
+do_execsql_test 5.2.1 {
+  SELECT count(*) FROM t1 WHERE a IN (0, 1)
+} {2}
+do_scanstatus_test 5.2.2 { 
+  nLoop 1 nVisit 2 nEst 2.0 zName sqlite_autoindex_t1_1
+  zExplain {SEARCH TABLE t1 USING COVERING INDEX sqlite_autoindex_t1_1 (a=?)}
+}
+
+do_eqp_test 5.3.1 {
+  SELECT count(*) FROM t2 WHERE y = 'j';
+} {0 0 0 {SEARCH TABLE t2 USING COVERING INDEX t2xy (ANY(x) AND y=?)}}
+do_execsql_test 5.3.2 {
+  SELECT count(*) FROM t2 WHERE y = 'j';
+} {19}
+do_scanstatus_test 5.3.3 { 
+  nLoop 1 nVisit 19 nEst 56.0 zName t2xy zExplain
+  {SEARCH TABLE t2 USING COVERING INDEX t2xy (ANY(x) AND y=?)}
+}
+
+do_eqp_test 5.4.1 {
+  SELECT count(*) FROM t1, t2 WHERE y = c;
+} {
+  0 0 0 {SCAN TABLE t1 USING COVERING INDEX t1bc}
+  0 1 1 {SEARCH TABLE t2 USING COVERING INDEX t2xy (ANY(x) AND y=?)}
+}
+do_execsql_test 5.4.2 {
+  SELECT count(*) FROM t1, t2 WHERE y = c;
+} {200}
+do_scanstatus_test 5.4.3 { 
+  nLoop 1 nVisit 10 nEst 10.0 zName t1bc 
+  zExplain {SCAN TABLE t1 USING COVERING INDEX t1bc}
+  nLoop 10 nVisit 200 nEst 56.0 zName t2xy 
+  zExplain {SEARCH TABLE t2 USING COVERING INDEX t2xy (ANY(x) AND y=?)}
+}
+
+do_eqp_test 5.5.1 {
+  SELECT count(*) FROM t1, t3 WHERE y = c;
+} {
+  0 0 1 {SCAN TABLE t3} 
+  0 1 0 {SEARCH TABLE t1 USING AUTOMATIC COVERING INDEX (c=?)}
+}
+do_execsql_test 5.5.2 {
+  SELECT count(*) FROM t1, t3 WHERE y = c;
+} {200}
+do_scanstatus_test 5.5.3 { 
+  nLoop 1 nVisit 501 nEst 480.0 zName t3 zExplain {SCAN TABLE t3}
+  nLoop 501 nVisit 200 nEst 20.0 zName auto-index zExplain
+  {SEARCH TABLE t1 USING AUTOMATIC COVERING INDEX (c=?)}
+}
+
+#-------------------------------------------------------------------------
+# Virtual table scans
+#
+ifcapable fts3 {
+  do_execsql_test 6.0 {
+    CREATE VIRTUAL TABLE ft1 USING fts4;
+    INSERT INTO ft1 VALUES('a d c f g h e i f c');
+    INSERT INTO ft1 VALUES('g c h b g b f f f g');
+    INSERT INTO ft1 VALUES('h h c c h f a e d d');
+    INSERT INTO ft1 VALUES('e j i j i e b c f g');
+    INSERT INTO ft1 VALUES('g f b g j c h a d f');
+    INSERT INTO ft1 VALUES('j i a e g f a i a c');
+    INSERT INTO ft1 VALUES('f d g g j j c a h g');
+    INSERT INTO ft1 VALUES('b d h a d j j j b i');
+    INSERT INTO ft1 VALUES('j e a b j e c b c i');
+    INSERT INTO ft1 VALUES('a d e f b j j c g d');
+  }
+  do_execsql_test 6.1.1 {
+    SELECT count(*) FROM ft1 WHERE ft1 MATCH 'd'
+  } {6}
+  do_scanstatus_test 6.1.2 { 
+    nLoop 1 nVisit 6 nEst 24.0 zName ft1 zExplain 
+    {SCAN TABLE ft1 VIRTUAL TABLE INDEX 3:}
+  }
+}
+
+
+finish_test