Imported Upstream version 2.0.3

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+# 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 implements regression tests for SQLite library.  The
+# focus of this file is testing compute SELECT statements and nested
+# views.
+#
+# $Id: select7.test,v 1.11 2007/09/12 17:01:45 danielk1977 Exp $
+
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable compound {
+
+# A 3-way INTERSECT.  Ticket #875
+ifcapable tempdb {
+  do_test select7-1.1 {
+    execsql {
+      create temp table t1(x);
+      insert into t1 values('amx');
+      insert into t1 values('anx');
+      insert into t1 values('amy');
+      insert into t1 values('bmy');
+      select * from t1 where x like 'a__'
+        intersect select * from t1 where x like '_m_'
+        intersect select * from t1 where x like '__x';
+    }
+  } {amx}
+}
+
+
+# Nested views do not handle * properly.  Ticket #826.
+#
+ifcapable view {
+do_test select7-2.1 {
+  execsql {
+    CREATE TABLE x(id integer primary key, a TEXT NULL);
+    INSERT INTO x (a) VALUES ('first');
+    CREATE TABLE tempx(id integer primary key, a TEXT NULL);
+    INSERT INTO tempx (a) VALUES ('t-first');
+    CREATE VIEW tv1 AS SELECT x.id, tx.id FROM x JOIN tempx tx ON tx.id=x.id;
+    CREATE VIEW tv1b AS SELECT x.id, tx.id FROM x JOIN tempx tx on tx.id=x.id;
+    CREATE VIEW tv2 AS SELECT * FROM tv1 UNION SELECT * FROM tv1b;
+    SELECT * FROM tv2;
+  }
+} {1 1}
+} ;# ifcapable view
+
+} ;# ifcapable compound
+
+# Do not allow GROUP BY without an aggregate. Ticket #1039.
+#
+# Change: force any query with a GROUP BY clause to be processed as
+# an aggregate query, whether it contains aggregates or not.
+#
+ifcapable subquery {
+  # do_test select7-3.1 {
+  #   catchsql {
+  #     SELECT * FROM (SELECT * FROM sqlite_master) GROUP BY name
+  #   }
+  # } {1 {GROUP BY may only be used on aggregate queries}}
+  do_test select7-3.1 {
+    catchsql {
+      SELECT * FROM (SELECT * FROM sqlite_master) GROUP BY name
+    }
+  } [list 0 [execsql {SELECT * FROM sqlite_master ORDER BY name}]]
+}
+
+# Ticket #2018 - Make sure names are resolved correctly on all
+# SELECT statements of a compound subquery.
+#
+ifcapable {subquery && compound} {
+  do_test select7-4.1 {
+    execsql {
+      CREATE TABLE IF NOT EXISTS photo(pk integer primary key, x);
+      CREATE TABLE IF NOT EXISTS tag(pk integer primary key, fk int, name);
+    
+      SELECT P.pk from PHOTO P WHERE NOT EXISTS ( 
+           SELECT T2.pk from TAG T2 WHERE T2.fk = P.pk 
+           EXCEPT 
+           SELECT T3.pk from TAG T3 WHERE T3.fk = P.pk AND T3.name LIKE '%foo%'
+      );
+    }
+  } {}
+  do_test select7-4.2 {
+    execsql {
+      INSERT INTO photo VALUES(1,1);
+      INSERT INTO photo VALUES(2,2);
+      INSERT INTO photo VALUES(3,3);
+      INSERT INTO tag VALUES(11,1,'one');
+      INSERT INTO tag VALUES(12,1,'two');
+      INSERT INTO tag VALUES(21,1,'one-b');
+      SELECT P.pk from PHOTO P WHERE NOT EXISTS ( 
+           SELECT T2.pk from TAG T2 WHERE T2.fk = P.pk 
+           EXCEPT 
+           SELECT T3.pk from TAG T3 WHERE T3.fk = P.pk AND T3.name LIKE '%foo%'
+      );
+    }
+  } {2 3}
+}
+
+# ticket #2347
+#
+ifcapable {subquery && compound} {
+  do_test select7-5.1 {
+    catchsql {
+      CREATE TABLE t2(a,b);
+      SELECT 5 IN (SELECT a,b FROM t2);
+    }
+  } [list 1 \
+     {only a single result allowed for a SELECT that is part of an expression}]
+  do_test select7-5.2 {
+    catchsql {
+      SELECT 5 IN (SELECT * FROM t2);
+    }
+  } [list 1 \
+     {only a single result allowed for a SELECT that is part of an expression}]
+  do_test select7-5.3 {
+    catchsql {
+      SELECT 5 IN (SELECT a,b FROM t2 UNION SELECT b,a FROM t2);
+    }
+  } [list 1 \
+     {only a single result allowed for a SELECT that is part of an expression}]
+  do_test select7-5.4 {
+    catchsql {
+      SELECT 5 IN (SELECT * FROM t2 UNION SELECT * FROM t2);
+    }
+  } [list 1 \
+     {only a single result allowed for a SELECT that is part of an expression}]
+}
+
+# Verify that an error occurs if you have too many terms on a
+# compound select statement.
+#
+ifcapable compound {
+  if {$SQLITE_MAX_COMPOUND_SELECT>0} {
+    set sql {SELECT 0}
+    set result 0
+    for {set i 1} {$i<$SQLITE_MAX_COMPOUND_SELECT} {incr i} {
+      append sql " UNION ALL SELECT $i"
+      lappend result $i
+    }
+    do_test select7-6.1 {
+      catchsql $sql
+    } [list 0 $result]
+    append sql { UNION ALL SELECT 99999999}
+    do_test select7-6.2 {
+      catchsql $sql
+    } {1 {too many terms in compound SELECT}}
+  }
+}
+
+# This block of tests verifies that bug aa92c76cd4 is fixed.
+#
+do_test select7-7.1 {
+  execsql {
+    CREATE TABLE t3(a REAL);
+    INSERT INTO t3 VALUES(44.0);
+    INSERT INTO t3 VALUES(56.0);
+  }
+} {}
+do_test select7-7.2 {
+  execsql {
+    pragma vdbe_trace = 0;
+    SELECT (CASE WHEN a=0 THEN 0 ELSE (a + 25) / 50 END) AS categ, count(*)
+    FROM t3 GROUP BY categ
+  }
+} {1.38 1 1.62 1}
+do_test select7-7.3 {
+  execsql {
+    CREATE TABLE t4(a REAL);
+    INSERT INTO t4 VALUES( 2.0 );
+    INSERT INTO t4 VALUES( 3.0 );
+  }
+} {}
+do_test select7-7.4 {
+  execsql {
+    SELECT (CASE WHEN a=0 THEN 'zero' ELSE a/2 END) AS t FROM t4 GROUP BY t;
+  }
+} {1.0 1.5}
+do_test select7-7.5 {
+  execsql { SELECT a=0, typeof(a) FROM t4 }
+} {0 real 0 real}
+do_test select7-7.6 {
+  execsql { SELECT a=0, typeof(a) FROM t4 GROUP BY a }
+} {0 real 0 real}
+
+do_test select7-7.7 {
+  execsql {
+    CREATE TABLE t5(a TEXT, b INT);
+    INSERT INTO t5 VALUES(123, 456);
+    SELECT typeof(a), a FROM t5 GROUP BY a HAVING a<b;
+  }
+} {text 123}
+
+finish_test