Move bundled copy of sqlite one level deeper to better separate it...

third_party/sqlite/test/in3.test

-# 2007 November 29
-#
-# 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 tests the optimisations made in November 2007 of expressions 
-# of the following form:
-#
-#     <value> IN (SELECT <column> FROM <table>)
-#
-# $Id: in3.test,v 1.5 2008/08/04 03:51:24 danielk1977 Exp $
-
-set testdir [file dirname $argv0]
-source $testdir/tester.tcl
-
-ifcapable !subquery {
-  finish_test
-  return
-}
-
-# Return the number of OpenEphemeral instructions used in the
-# implementation of the sql statement passed as a an argument.
-#
-proc nEphemeral {sql} {
-  set nEph 0
-  foreach op [execsql "EXPLAIN $sql"] {
-    if {$op eq "OpenEphemeral"} {incr nEph}
-  }
-  set nEph
-}
-
-# This proc works the same way as execsql, except that the number
-# of OpenEphemeral instructions used in the implementation of the
-# statement is inserted into the start of the returned list.
-#
-proc exec_neph {sql} {
-  return [concat [nEphemeral $sql] [execsql $sql]]
-}
-
-do_test in3-1.1 {
-  execsql {
-    CREATE TABLE t1(a PRIMARY KEY, b);
-    INSERT INTO t1 VALUES(1, 2);
-    INSERT INTO t1 VALUES(3, 4);
-    INSERT INTO t1 VALUES(5, 6);
-  }
-} {}
-
-# All of these queries should avoid using a temp-table:
-#
-do_test in3-1.2 {
-  exec_neph { SELECT rowid FROM t1 WHERE rowid IN (SELECT rowid FROM t1); }
-} {0 1 2 3}
-do_test in3-1.3 {
-  exec_neph { SELECT a FROM t1 WHERE a IN (SELECT a FROM t1); }
-} {0 1 3 5}
-do_test in3-1.4 {
-  exec_neph { SELECT rowid FROM t1 WHERE rowid+0 IN (SELECT rowid FROM t1); }
-} {0 1 2 3}
-do_test in3-1.5 {
-  exec_neph { SELECT a FROM t1 WHERE a+0 IN (SELECT a FROM t1); }
-} {0 1 3 5}
-
-# Because none of the sub-select queries in the following statements
-# match the pattern ("SELECT <column> FROM <table>"), the following do 
-# require a temp table.
-#
-do_test in3-1.6 {
-  exec_neph { SELECT rowid FROM t1 WHERE rowid IN (SELECT rowid+0 FROM t1); }
-} {1 1 2 3}
-do_test in3-1.7 {
-  exec_neph { SELECT a FROM t1 WHERE a IN (SELECT a+0 FROM t1); }
-} {1 1 3 5}
-do_test in3-1.8 {
-  exec_neph { SELECT a FROM t1 WHERE a IN (SELECT a FROM t1 WHERE 1); }
-} {1 1 3 5}
-do_test in3-1.9 {
-  exec_neph { SELECT a FROM t1 WHERE a IN (SELECT a FROM t1 GROUP BY a); }
-} {1 1 3 5}
-
-# This should not use a temp-table. Even though the sub-select does
-# not exactly match the pattern "SELECT <column> FROM <table>", in
-# this case the ORDER BY is a no-op and can be ignored.
-do_test in3-1.10 {
-  exec_neph { SELECT a FROM t1 WHERE a IN (SELECT a FROM t1 ORDER BY a); }
-} {0 1 3 5}
-
-# These do use the temp-table. Adding the LIMIT clause means the 
-# ORDER BY cannot be ignored.
-do_test in3-1.11 {
-  exec_neph {SELECT a FROM t1 WHERE a IN (SELECT a FROM t1 ORDER BY a LIMIT 1)}
-} {1 1}
-do_test in3-1.12 {
-  exec_neph {
-    SELECT a FROM t1 WHERE a IN (SELECT a FROM t1 ORDER BY a LIMIT 1 OFFSET 1)
-  }
-} {1 3}
-
-# Has to use a temp-table because of the compound sub-select.
-#
-ifcapable compound {
-  do_test in3-1.13 {
-    exec_neph {
-      SELECT a FROM t1 WHERE a IN (
-        SELECT a FROM t1 UNION ALL SELECT a FROM t1
-      )
-    }
-  } {1 1 3 5}
-}
-
-# The first of these queries has to use the temp-table, because the 
-# collation sequence used for the index on "t1.a" does not match the
-# collation sequence used by the "IN" comparison. The second does not
-# require a temp-table, because the collation sequences match.
-#
-do_test in3-1.14 {
-  exec_neph { SELECT a FROM t1 WHERE a COLLATE nocase IN (SELECT a FROM t1) }
-} {1 1 3 5}
-do_test in3-1.15 {
-  exec_neph { SELECT a FROM t1 WHERE a COLLATE binary IN (SELECT a FROM t1) }
-} {0 1 3 5}
-
-# Neither of these queries require a temp-table. The collation sequence
-# makes no difference when using a rowid.
-#
-do_test in3-1.16 {
-  exec_neph {SELECT a FROM t1 WHERE a COLLATE nocase IN (SELECT rowid FROM t1)}
-} {0 1 3}
-do_test in3-1.17 {
-  exec_neph {SELECT a FROM t1 WHERE a COLLATE binary IN (SELECT rowid FROM t1)}
-} {0 1 3}
-
-# The following tests - in3.2.* - test a bug that was difficult to track
-# down during development. They are not particularly well focused.
-#
-do_test in3-2.1 {
-  execsql {
-    DROP TABLE IF EXISTS t1;
-    CREATE TABLE t1(w int, x int, y int);
-    CREATE TABLE t2(p int, q int, r int, s int);
-  }
-  for {set i 1} {$i<=100} {incr i} {
-    set w $i
-    set x [expr {int(log($i)/log(2))}]
-    set y [expr {$i*$i + 2*$i + 1}]
-    execsql "INSERT INTO t1 VALUES($w,$x,$y)"
-  }
-  set maxy [execsql {select max(y) from t1}]
-  db eval { INSERT INTO t2 SELECT 101-w, x, $maxy+1-y, y FROM t1 }
-} {}
-do_test in3-2.2 {
-  execsql {
-    SELECT rowid 
-    FROM t1 
-    WHERE rowid IN (SELECT rowid FROM t1 WHERE rowid IN (1, 2));
-  }
-} {1 2}
-do_test in3-2.3 {
-  execsql {
-    select rowid from t1 where rowid IN (-1,2,4)
-  }
-} {2 4}
-do_test in3-2.4 {
-  execsql {
-    SELECT rowid FROM t1 WHERE rowid IN 
-       (select rowid from t1 where rowid IN (-1,2,4))
-  }
-} {2 4}
-
-#-------------------------------------------------------------------------
-# This next block of tests - in3-3.* - verify that column affinity is
-# correctly handled in cases where an index might be used to optimise
-# an IN (SELECT) expression.
-#
-do_test in3-3.1 {
-  catch {execsql {
-    DROP TABLE t1;
-    DROP TABLE t2;
-  }}
-
-  execsql {
-
-    CREATE TABLE t1(a BLOB, b NUMBER ,c TEXT);
-    CREATE UNIQUE INDEX t1_i1 ON t1(a);        /* no affinity */
-    CREATE UNIQUE INDEX t1_i2 ON t1(b);        /* numeric affinity */
-    CREATE UNIQUE INDEX t1_i3 ON t1(c);        /* text affinity */
-
-    CREATE TABLE t2(x BLOB, y NUMBER, z TEXT);
-    CREATE UNIQUE INDEX t2_i1 ON t2(x);        /* no affinity */
-    CREATE UNIQUE INDEX t2_i2 ON t2(y);        /* numeric affinity */
-    CREATE UNIQUE INDEX t2_i3 ON t2(z);        /* text affinity */
-
-    INSERT INTO t1 VALUES(1, 1, 1);
-    INSERT INTO t2 VALUES('1', '1', '1');
-  }
-} {}
-
-do_test in3-3.2 {
-  # No affinity is applied before comparing "x" and "a". Therefore
-  # the index can be used (the comparison is false, text!=number).
-  exec_neph { SELECT x IN (SELECT a FROM t1) FROM t2 }
-} {0 0}
-do_test in3-3.3 {
-  # Logically, numeric affinity is applied to both sides before 
-  # the comparison.  Therefore it is possible to use index t1_i2.
-  exec_neph { SELECT x IN (SELECT b FROM t1) FROM t2 }
-} {0 1}
-do_test in3-3.4 {
-  # No affinity is applied before the comparison takes place. Making
-  # it possible to use index t1_i3.
-  exec_neph { SELECT x IN (SELECT c FROM t1) FROM t2 }
-} {0 1}
-
-do_test in3-3.5 {
-  # Numeric affinity should be applied to each side before the comparison
-  # takes place. Therefore we cannot use index t1_i1, which has no affinity.
-  exec_neph { SELECT y IN (SELECT a FROM t1) FROM t2 }
-} {1 1}
-do_test in3-3.6 {
-  # Numeric affinity is applied to both sides before 
-  # the comparison.  Therefore it is possible to use index t1_i2.
-  exec_neph { SELECT y IN (SELECT b FROM t1) FROM t2 }
-} {0 1}
-do_test in3-3.7 {
-  # Numeric affinity is applied before the comparison takes place. 
-  # Making it impossible to use index t1_i3.
-  exec_neph { SELECT y IN (SELECT c FROM t1) FROM t2 }
-} {1 1}
-
-#---------------------------------------------------------------------
-#
-# Test using a multi-column index.
-#
-do_test in3-4.1 {
-  execsql {
-    CREATE TABLE t3(a, b, c);
-    CREATE UNIQUE INDEX t3_i ON t3(b, a);
-  }
-
-  execsql {
-    INSERT INTO t3 VALUES(1, 'numeric', 2);
-    INSERT INTO t3 VALUES(2, 'text', 2);
-    INSERT INTO t3 VALUES(3, 'real', 2);
-    INSERT INTO t3 VALUES(4, 'none', 2);
-  }
-} {}
-do_test in3-4.2 {
-  exec_neph { SELECT 'text' IN (SELECT b FROM t3) }
-} {0 1}
-do_test in3-4.3 {
-  exec_neph { SELECT 'TEXT' COLLATE nocase IN (SELECT b FROM t3) }
-} {1 1}
-do_test in3-4.4 {
-  # A temp table must be used because t3_i.b is not guaranteed to be unique.
-  exec_neph { SELECT b FROM t3 WHERE b IN (SELECT b FROM t3) }
-} {1 none numeric real text}
-do_test in3-4.5 {
-  execsql { CREATE UNIQUE INDEX t3_i2 ON t3(b) }
-  exec_neph { SELECT b FROM t3 WHERE b IN (SELECT b FROM t3) }
-} {0 none numeric real text}
-do_test in3-4.6 {
-  execsql { DROP INDEX t3_i2 }
-} {}
-
-# The following two test cases verify that ticket #2991 has been fixed.
-#
-do_test in3-5.1 {
-  execsql {
-    CREATE TABLE Folders(
-      folderid INTEGER PRIMARY KEY, 
-      parentid INTEGER, 
-      rootid INTEGER, 
-      path VARCHAR(255)
-    );
-  }
-} {}
-do_test in3-5.2 {
-  catchsql {
-    DELETE FROM Folders WHERE folderid IN
-    (SELECT folderid FROM Folder WHERE path LIKE 'C:\MP3\Albums\' || '%');
-  }
-} {1 {no such table: Folder}}
-
-finish_test