third_party/sqlite/patched/test/in.test - chromium/src - Git at Google

 # 2001 September 15
 #
 # 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 the IN and BETWEEN operator.
 #
 # $Id: in.test,v 1.22 2008/08/04 03:51:24 danielk1977 Exp $

 set testdir [file dirname $argv0]
 source $testdir/tester.tcl

 # Generate the test data we will need for the first squences of tests.
 #
 do_test in-1.0 {
   execsql {
     BEGIN;
     CREATE TABLE t1(a int, b int);
   }
   for {set i 1} {$i<=10} {incr i} {
     execsql "INSERT INTO t1 VALUES($i,[expr {1<<$i}])"
   }
   execsql {
     COMMIT;
     SELECT count(*) FROM t1;
   }
 } {10}

 # Do basic testing of BETWEEN.
 #
 do_test in-1.1 {
   execsql {SELECT a FROM t1 WHERE b BETWEEN 10 AND 50 ORDER BY a}
 } {4 5}
 do_test in-1.2 {
   execsql {SELECT a FROM t1 WHERE b NOT BETWEEN 10 AND 50 ORDER BY a}
 } {1 2 3 6 7 8 9 10}
 do_test in-1.3 {
   execsql {SELECT a FROM t1 WHERE b BETWEEN a AND a*5 ORDER BY a}
 } {1 2 3 4}
 do_test in-1.4 {
   execsql {SELECT a FROM t1 WHERE b NOT BETWEEN a AND a*5 ORDER BY a}
 } {5 6 7 8 9 10}
 do_test in-1.6 {
   execsql {SELECT a FROM t1 WHERE b BETWEEN a AND a*5 OR b=512 ORDER BY a}
 } {1 2 3 4 9}
 do_test in-1.7 {
   execsql {SELECT a+ 100*(a BETWEEN 1 and 3) FROM t1 ORDER BY b}
 } {101 102 103 4 5 6 7 8 9 10}

 # The rest of this file concentrates on testing the IN operator.
 # Skip this if the library is compiled with SQLITE_OMIT_SUBQUERY
 # (because the IN operator is unavailable).
 #
 ifcapable !subquery {
   finish_test
   return
 }

 # Testing of the IN operator using static lists on the right-hand side.
 #
 do_test in-2.1 {
   execsql {SELECT a FROM t1 WHERE b IN (8,12,16,24,32) ORDER BY a}
 } {3 4 5}
 do_test in-2.2 {
   execsql {SELECT a FROM t1 WHERE b NOT IN (8,12,16,24,32) ORDER BY a}
 } {1 2 6 7 8 9 10}
 do_test in-2.3 {
   execsql {SELECT a FROM t1 WHERE b IN (8,12,16,24,32) OR b=512 ORDER BY a}
 } {3 4 5 9}
 do_test in-2.4 {
   execsql {SELECT a FROM t1 WHERE b NOT IN (8,12,16,24,32) OR b=512 ORDER BY a}
 } {1 2 6 7 8 9 10}
 do_test in-2.5 {
   execsql {SELECT a+100*(b IN (8,16,24)) FROM t1 ORDER BY b}
 } {1 2 103 104 5 6 7 8 9 10}

 do_test in-2.6 {
   execsql {SELECT a FROM t1 WHERE b IN (b+8,64)}
 } {6}
 do_test in-2.7 {
   execsql {SELECT a FROM t1 WHERE b IN (max(5,10,b),20)}
 } {4 5 6 7 8 9 10}
 do_test in-2.8 {
   execsql {SELECT a FROM t1 WHERE b IN (8*2,64/2) ORDER BY b}
 } {4 5}
 do_test in-2.9 {
   execsql {SELECT a FROM t1 WHERE b IN (max(5,10),20)}
 } {}
 do_test in-2.10 {
   execsql {SELECT a FROM t1 WHERE min(0,b IN (a,30))}
 } {}
 do_test in-2.11 {
   set v [catch {execsql {SELECT a FROM t1 WHERE c IN (10,20)}} msg]
   lappend v $msg
 } {1 {no such column: c}}

 # Testing the IN operator where the right-hand side is a SELECT
 #
 do_test in-3.1 {
   execsql {
     SELECT a FROM t1
     WHERE b IN (SELECT b FROM t1 WHERE a<5)
     ORDER BY a
   }
 } {1 2 3 4}
 do_test in-3.2 {
   execsql {
     SELECT a FROM t1
     WHERE b IN (SELECT b FROM t1 WHERE a<5) OR b==512
     ORDER BY a
   }
 } {1 2 3 4 9}
 do_test in-3.3 {
   execsql {
     SELECT a + 100*(b IN (SELECT b FROM t1 WHERE a<5)) FROM t1 ORDER BY b
   }
 } {101 102 103 104 5 6 7 8 9 10}

 # Make sure the UPDATE and DELETE commands work with IN-SELECT
 #
 do_test in-4.1 {
   execsql {
     UPDATE t1 SET b=b*2
     WHERE b IN (SELECT b FROM t1 WHERE a>8)
   }
   execsql {SELECT b FROM t1 ORDER BY b}
 } {2 4 8 16 32 64 128 256 1024 2048}
 do_test in-4.2 {
   execsql {
     DELETE FROM t1 WHERE b IN (SELECT b FROM t1 WHERE a>8)
   }
   execsql {SELECT a FROM t1 ORDER BY a}
 } {1 2 3 4 5 6 7 8}
 do_test in-4.3 {
   execsql {
     DELETE FROM t1 WHERE b NOT IN (SELECT b FROM t1 WHERE a>4)
   }
   execsql {SELECT a FROM t1 ORDER BY a}
 } {5 6 7 8}

 # Do an IN with a constant RHS but where the RHS has many, many
 # elements.  We need to test that collisions in the hash table
 # are resolved properly.
 #
 do_test in-5.1 {
   execsql {
     INSERT INTO t1 VALUES('hello', 'world');
     SELECT * FROM t1
     WHERE a IN (
        'Do','an','IN','with','a','constant','RHS','but','where','the',
        'has','many','elements','We','need','to','test','that',
        'collisions','hash','table','are','resolved','properly',
        'This','in-set','contains','thirty','one','entries','hello');
   }
 } {hello world}

 # Make sure the IN operator works with INTEGER PRIMARY KEY fields.
 #
 do_test in-6.1 {
   execsql {
     CREATE TABLE ta(a INTEGER PRIMARY KEY, b);
     INSERT INTO ta VALUES(1,1);
     INSERT INTO ta VALUES(2,2);
     INSERT INTO ta VALUES(3,3);
     INSERT INTO ta VALUES(4,4);
     INSERT INTO ta VALUES(6,6);
     INSERT INTO ta VALUES(8,8);
     INSERT INTO ta VALUES(10,
        'This is a key that is long enough to require a malloc in the VDBE');
     SELECT * FROM ta WHERE a<10;
   }
 } {1 1 2 2 3 3 4 4 6 6 8 8}
 do_test in-6.2 {
   execsql {
     CREATE TABLE tb(a INTEGER PRIMARY KEY, b);
     INSERT INTO tb VALUES(1,1);
     INSERT INTO tb VALUES(2,2);
     INSERT INTO tb VALUES(3,3);
     INSERT INTO tb VALUES(5,5);
     INSERT INTO tb VALUES(7,7);
     INSERT INTO tb VALUES(9,9);
     INSERT INTO tb VALUES(11,
        'This is a key that is long enough to require a malloc in the VDBE');
     SELECT * FROM tb WHERE a<10;
   }
 } {1 1 2 2 3 3 5 5 7 7 9 9}
 do_test in-6.3 {
   execsql {
     SELECT a FROM ta WHERE b IN (SELECT a FROM tb);
   }
 } {1 2 3}
 do_test in-6.4 {
   execsql {
     SELECT a FROM ta WHERE b NOT IN (SELECT a FROM tb);
   }
 } {4 6 8 10}
 do_test in-6.5 {
   execsql {
     SELECT a FROM ta WHERE b IN (SELECT b FROM tb);
   }
 } {1 2 3 10}
 do_test in-6.6 {
   execsql {
     SELECT a FROM ta WHERE b NOT IN (SELECT b FROM tb);
   }
 } {4 6 8}
 do_test in-6.7 {
   execsql {
     SELECT a FROM ta WHERE a IN (SELECT a FROM tb);
   }
 } {1 2 3}
 do_test in-6.8 {
   execsql {
     SELECT a FROM ta WHERE a NOT IN (SELECT a FROM tb);
   }
 } {4 6 8 10}
 do_test in-6.9 {
   execsql {
     SELECT a FROM ta WHERE a IN (SELECT b FROM tb);
   }
 } {1 2 3}
 do_test in-6.10 {
   execsql {
     SELECT a FROM ta WHERE a NOT IN (SELECT b FROM tb);
   }
 } {4 6 8 10}

 # Tests of IN operator against empty sets.  (Ticket #185)
 #
 do_test in-7.1 {
   execsql {
     SELECT a FROM t1 WHERE a IN ();
   }
 } {}
 do_test in-7.2 {
   execsql {
     SELECT a FROM t1 WHERE a IN (5);
   }
 } {5}
 do_test in-7.3 {
   execsql {
     SELECT a FROM t1 WHERE a NOT IN () ORDER BY a;
   }
 } {5 6 7 8 hello}
 do_test in-7.4 {
   execsql {
     SELECT a FROM t1 WHERE a IN (5) AND b IN ();
   }
 } {}
 do_test in-7.5 {
   execsql {
     SELECT a FROM t1 WHERE a IN (5) AND b NOT IN ();
   }
 } {5}
 do_test in-7.6.1 {
   execsql {
     SELECT a FROM ta WHERE a IN ();
   }
 } {}
 do_test in-7.6.2 {
   db status step
 } {0}
 do_test in-7.7 {
   execsql {
     SELECT a FROM ta WHERE a NOT IN ();
   }
 } {1 2 3 4 6 8 10}

 do_test in-7.8.1 {
   execsql {
     SELECT * FROM ta LEFT JOIN tb ON (ta.b=tb.b) WHERE ta.a IN ();
   }
 } {}
 do_test in-7.8.2 {
   db status step
 } {0}

 do_test in-8.1 {
   execsql {
     SELECT b FROM t1 WHERE a IN ('hello','there')
   }
 } {world}
 do_test in-8.2 {
   execsql {
     SELECT b FROM t1 WHERE a IN ("hello",'there')
   }
 } {world}

 # Test constructs of the form:  expr IN tablename
 #
 do_test in-9.1 {
   execsql {
     CREATE TABLE t4 AS SELECT a FROM tb;
     SELECT * FROM t4;
   }
 } {1 2 3 5 7 9 11}
 do_test in-9.2 {
   execsql {
     SELECT b FROM t1 WHERE a IN t4;
   }
 } {32 128}
 do_test in-9.3 {
   execsql {
     SELECT b FROM t1 WHERE a NOT IN t4;
   }
 } {64 256 world}
 do_test in-9.4 {
   catchsql {
     SELECT b FROM t1 WHERE a NOT IN tb;
   }
 } {1 {sub-select returns 2 columns - expected 1}}

 # IN clauses in CHECK constraints.  Ticket #1645
 #
 do_test in-10.1 {
   execsql {
     CREATE TABLE t5(
       a INTEGER,
       CHECK( a IN (111,222,333) )
     );
     INSERT INTO t5 VALUES(111);
     SELECT * FROM t5;
   }
 } {111}
 do_test in-10.2 {
   catchsql {
     INSERT INTO t5 VALUES(4);
   }
 } {1 {CHECK constraint failed: t5}}

 # Ticket #1821
 #
 # Type affinity applied to the right-hand side of an IN operator.
 #
 do_test in-11.1 {
   execsql {
     CREATE TABLE t6(a,b NUMERIC);
     INSERT INTO t6 VALUES(1,2);
     INSERT INTO t6 VALUES(2,3);
     SELECT * FROM t6 WHERE b IN (2);
   }
 } {1 2}
 do_test in-11.2 {
   # The '2' should be coerced into 2 because t6.b is NUMERIC
   execsql {
     SELECT * FROM t6 WHERE b IN ('2');
   }
 } {1 2}
 do_test in-11.3 {
   # No coercion should occur here because of the unary + before b.
   execsql {
     SELECT * FROM t6 WHERE +b IN ('2');
   }
 } {}
 do_test in-11.4 {
   # No coercion because column a as affinity NONE
   execsql {
     SELECT * FROM t6 WHERE a IN ('2');
   }
 } {}
 do_test in-11.5 {
   execsql {
     SELECT * FROM t6 WHERE a IN (2);
   }
 } {2 3}
 do_test in-11.6 {
   # No coercion because column a as affinity NONE
   execsql {
     SELECT * FROM t6 WHERE +a IN ('2');
   }
 } {}

 # Test error conditions with expressions of the form IN(<compound select>).
 #
 ifcapable compound {
 do_test in-12.1 {
   execsql {
     CREATE TABLE t2(a, b, c);
     CREATE TABLE t3(a, b, c);
   }
 } {}
 do_test in-12.2 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION ALL SELECT a, b FROM t2
     );
   }
 } {1 {sub-select returns 2 columns - expected 1}}
 do_test in-12.3 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION SELECT a, b FROM t2
     );
   }
 } {1 {sub-select returns 2 columns - expected 1}}
 do_test in-12.4 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 EXCEPT SELECT a, b FROM t2
     );
   }
 } {1 {sub-select returns 2 columns - expected 1}}
 do_test in-12.5 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 INTERSECT SELECT a, b FROM t2
     );
   }
 } {1 {sub-select returns 2 columns - expected 1}}
 do_test in-12.6 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION ALL SELECT a FROM t2
     );
   }
 } {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
 do_test in-12.7 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION SELECT a FROM t2
     );
   }
 } {1 {SELECTs to the left and right of UNION do not have the same number of result columns}}
 do_test in-12.8 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 EXCEPT SELECT a FROM t2
     );
   }
 } {1 {SELECTs to the left and right of EXCEPT do not have the same number of result columns}}
 do_test in-12.9 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 INTERSECT SELECT a FROM t2
     );
   }
 } {1 {SELECTs to the left and right of INTERSECT do not have the same number of result columns}}
 }

 ifcapable compound {
 do_test in-12.10 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a FROM t3 UNION ALL SELECT a, b FROM t2
     );
   }
 } {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
 do_test in-12.11 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a FROM t3 UNION SELECT a, b FROM t2
     );
   }
 } {1 {SELECTs to the left and right of UNION do not have the same number of result columns}}
 do_test in-12.12 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a FROM t3 EXCEPT SELECT a, b FROM t2
     );
   }
 } {1 {SELECTs to the left and right of EXCEPT do not have the same number of result columns}}
 do_test in-12.13 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a FROM t3 INTERSECT SELECT a, b FROM t2
     );
   }
 } {1 {SELECTs to the left and right of INTERSECT do not have the same number of result columns}}
 do_test in-12.14 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION ALL SELECT a, b FROM t2
     );
   }
 } {1 {sub-select returns 2 columns - expected 1}}
 do_test in-12.15 {
   catchsql {
     SELECT * FROM t2 WHERE a IN (
       SELECT a, b FROM t3 UNION ALL SELECT a FROM t2
     );
   }
 } {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
 }; #ifcapable compound


 #------------------------------------------------------------------------
 # The following tests check that NULL is handled correctly when it
 # appears as part of a set of values on the right-hand side of an
 # IN or NOT IN operator.
 #
 # When it appears in such a set, NULL is handled as an "unknown value".
 # If, because of the unknown value in the set, the result of the expression
 # cannot be determined, then it itself evaluates to NULL.
 #

 # Warm body test to demonstrate the principles being tested:
 #
 do_test in-13.1 {
   db nullvalue "null"
   execsql { SELECT
     1 IN (NULL, 1, 2),     -- The value 1 is a member of the set, return true.
     3 IN (NULL, 1, 2),     -- Ambiguous, return NULL.
     1 NOT IN (NULL, 1, 2), -- The value 1 is a member of the set, return false.
     3 NOT IN (NULL, 1, 2)  -- Ambiguous, return NULL.
   }
 } {1 null 0 null}

 do_test in-13.2 {
   execsql {
     CREATE TABLE t7(a, b, c NOT NULL);
     INSERT INTO t7 VALUES(1,    1, 1);
     INSERT INTO t7 VALUES(2,    2, 2);
     INSERT INTO t7 VALUES(3,    3, 3);
     INSERT INTO t7 VALUES(NULL, 4, 4);
     INSERT INTO t7 VALUES(NULL, 5, 5);
   }
 } {}

 do_test in-13.3 {
   execsql { SELECT 2 IN (SELECT a FROM t7) }
 } {1}
 do_test in-13.4 {
   execsql { SELECT 6 IN (SELECT a FROM t7) }
 } {null}

 do_test in-13.5 {
   execsql { SELECT 2 IN (SELECT b FROM t7) }
 } {1}
 do_test in-13.6 {
   execsql { SELECT 6 IN (SELECT b FROM t7) }
 } {0}

 do_test in-13.7 {
   execsql { SELECT 2 IN (SELECT c FROM t7) }
 } {1}
 do_test in-13.8 {
   execsql { SELECT 6 IN (SELECT c FROM t7) }
 } {0}

 do_test in-13.9 {
   execsql {
     SELECT
       2 NOT IN (SELECT a FROM t7),
       6 NOT IN (SELECT a FROM t7),
       2 NOT IN (SELECT b FROM t7),
       6 NOT IN (SELECT b FROM t7),
       2 NOT IN (SELECT c FROM t7),
       6 NOT IN (SELECT c FROM t7)
   }
 } {0 null 0 1 0 1}

 do_test in-13.10 {
   execsql {
     SELECT b IN (
       SELECT inside.a
       FROM t7 AS inside
       WHERE inside.b BETWEEN outside.b+1 AND outside.b+2
     )
     FROM t7 AS outside ORDER BY b;
   }
 } {0 null null null 0}

 do_test in-13.11 {
   execsql {
     SELECT b NOT IN (
       SELECT inside.a
       FROM t7 AS inside
       WHERE inside.b BETWEEN outside.b+1 AND outside.b+2
     )
     FROM t7 AS outside ORDER BY b;
   }
 } {1 null null null 1}

 do_test in-13.12 {
   execsql {
     CREATE INDEX i1 ON t7(a);
     CREATE INDEX i2 ON t7(b);
     CREATE INDEX i3 ON t7(c);
   }
   execsql {
     SELECT
       2 IN (SELECT a FROM t7),
       6 IN (SELECT a FROM t7),
       2 IN (SELECT b FROM t7),
       6 IN (SELECT b FROM t7),
       2 IN (SELECT c FROM t7),
       6 IN (SELECT c FROM t7)
   }
 } {1 null 1 0 1 0}

 do_test in-13.13 {
   execsql {
     SELECT
       2 NOT IN (SELECT a FROM t7),
       6 NOT IN (SELECT a FROM t7),
       2 NOT IN (SELECT b FROM t7),
       6 NOT IN (SELECT b FROM t7),
       2 NOT IN (SELECT c FROM t7),
       6 NOT IN (SELECT c FROM t7)
   }
 } {0 null 0 1 0 1}

 do_test in-13.14 {
   execsql {
     BEGIN TRANSACTION;
     CREATE TABLE a(id INTEGER);
     INSERT INTO a VALUES(1);
     INSERT INTO a VALUES(2);
     INSERT INTO a VALUES(3);
     CREATE TABLE b(id INTEGER);
     INSERT INTO b VALUES(NULL);
     INSERT INTO b VALUES(3);
     INSERT INTO b VALUES(4);
     INSERT INTO b VALUES(5);
     COMMIT;
     SELECT * FROM a WHERE id NOT IN (SELECT id FROM b);
   }
 } {}
 do_test in-13.14 {
   execsql {
     CREATE INDEX i5 ON b(id);
     SELECT * FROM a WHERE id NOT IN (SELECT id FROM b);
   }
 } {}

 do_test in-13.15 {
   catchsql {
     SELECT 0 WHERE (SELECT 0,0) OR (0 IN (1,2));
   }
 } {1 {sub-select returns 2 columns - expected 1}}


 do_test in-13.X {
   db nullvalue ""
 } {}

 # At one point the following was causing valgrind to report a "jump
 # depends on unitialized location" problem.
 #
 do_execsql_test in-14.0 {
   CREATE TABLE c1(a);
   INSERT INTO c1 VALUES(1), (2), (4), (3);
 }
 do_execsql_test in-14.1 {
   SELECT * FROM c1 WHERE a IN (SELECT a FROM c1) ORDER BY 1
 } {1 2 3 4}

 # 2019-02-20 Ticket https://www.sqlite.org/src/tktview/df46dfb631f75694fbb97033b69
 #
 do_execsql_test in-15.0 {
   DROP TABLE IF EXISTS t1;
   CREATE TABLE IF NOT EXISTS t1(id INTEGER PRIMARY KEY);
   INSERT INTO t1 VALUES(1);
   SELECT a.id FROM t1 AS a JOIN t1 AS b ON a.id=b.id WHERE a.id IN (1,2,3);
 } {1}
 do_execsql_test in-15.1 {
   DROP TABLE IF EXISTS t2;
   CREATE TABLE t2(a INTEGER PRIMARY KEY,b);
   INSERT INTO t2 VALUES(1,11);
   INSERT INTO t2 VALUES(2,22);
   INSERT INTO t2 VALUES(3,33);
   SELECT b, a IN (3,4,5) FROM t2 ORDER BY b;
 } {11 0 22 0 33 1}
 do_execsql_test in-15.2 {
   DROP TABLE IF EXISTS t3;
   CREATE TABLE t3(x INTEGER PRIMARY KEY);
   INSERT INTO t3 VALUES(8);
   SELECT CASE WHEN x NOT IN (5,6,7) THEN 'yes' ELSE 'no' END FROM t3;
   SELECT CASE WHEN x NOT IN (NULL,6,7) THEN 'yes' ELSE 'no' END FROM t3;
 } {yes no}
 do_execsql_test in-15.3 {
   SELECT CASE WHEN x NOT IN (5,6,7) OR x=0 THEN 'yes' ELSE 'no' END FROM t3;
   SELECT CASE WHEN x NOT IN (NULL,6,7) OR x=0 THEN 'yes' ELSE 'no' END FROM t3;
 } {yes no}
 do_execsql_test in-15.4 {
   DROP TABLE IF EXISTS t4;
   CREATE TABLE t4(a INTEGER PRIMARY KEY, b INT);
   WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<20)
     INSERT INTO t4(a,b) SELECT x, x+100 FROM c;
   SELECT b FROM t4 WHERE a IN (3,null,8) ORDER BY +b;
 } {103 108}
 do_execsql_test in-15.5 {
   SELECT b FROM t4 WHERE a NOT IN (3,null,8);
 } {}
 do_execsql_test in-15.6 {
   DROP TABLE IF EXISTS t5;
   DROP TABLE IF EXISTS t6;
   CREATE TABLE t5(id INTEGER PRIMARY KEY, name TEXT);
   CREATE TABLE t6(id INTEGER PRIMARY KEY, name TEXT, t5_id INT);
   INSERT INTO t5 VALUES(1,'Alice'),(2,'Emma');
   INSERT INTO t6 VALUES(1,'Bob',1),(2,'Cindy',1),(3,'Dave',2);
   SELECT a.*
     FROM t5 AS 'a' JOIN t5 AS 'b' ON b.id=a.id
    WHERE b.id IN (
           SELECT t6.t5_id
             FROM t6
            WHERE name='Bob'
              AND t6.t5_id IS NOT NULL
              AND t6.id IN (
                   SELECT id
                     FROM (SELECT t6.id, count(*) AS x
                             FROM t6
                            WHERE name='Bob'
                          ) AS 't'
                    WHERE x=1
                  )
              AND t6.id IN (1,id)
          );
 } {1 Alice}

 #-------------------------------------------------------------------------
 reset_db
 do_execsql_test in-16.0 {
   CREATE TABLE x1(a, b);
   INSERT INTO x1(a) VALUES(1), (2), (3), (4), (5), (6);
   CREATE INDEX x1i ON x1(a, b);
 }

 do_execsql_test in-16.1 {
   SELECT * FROM x1
   WHERE a IN (SELECT a FROM x1 WHERE (a%2)==0)
   ORDER BY a DESC, b;
 } {6 {} 4 {} 2 {}}

 do_execsql_test in-16.2 {
   SELECT * FROM x1
   WHERE a IN (SELECT a FROM x1 WHERE (a%7)==0)
   ORDER BY a DESC, b;
 } {}

 # 2019-06-11
 # https://www.sqlite.org/src/info/57353f8243c637c0
 #
 do_execsql_test in-17.1 {
   SELECT 1 IN ('1');
 } 0
 do_execsql_test in-17.2 {
   SELECT 1 IN ('1' COLLATE nocase);
 } 0
 do_execsql_test in-17.3 {
   SELECT 1 IN (CAST('1' AS text));
 } 0
 do_execsql_test in-17.4 {
   SELECT 1 IN (CAST('1' AS text) COLLATE nocase);
 } 0

 finish_test
	# 2001 September 15
	#
	# 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 the IN and BETWEEN operator.
	#
	# $Id: in.test,v 1.22 2008/08/04 03:51:24 danielk1977 Exp $

	set testdir [file dirname $argv0]
	source $testdir/tester.tcl

	# Generate the test data we will need for the first squences of tests.
	#
	do_test in-1.0 {
	execsql {
	BEGIN;
	CREATE TABLE t1(a int, b int);
	}
	for {set i 1} {$i<=10} {incr i} {
	execsql "INSERT INTO t1 VALUES($i,[expr {1<<$i}])"
	}
	execsql {
	COMMIT;
	SELECT count(*) FROM t1;
	}
	} {10}

	# Do basic testing of BETWEEN.
	#
	do_test in-1.1 {
	execsql {SELECT a FROM t1 WHERE b BETWEEN 10 AND 50 ORDER BY a}
	} {4 5}
	do_test in-1.2 {
	execsql {SELECT a FROM t1 WHERE b NOT BETWEEN 10 AND 50 ORDER BY a}
	} {1 2 3 6 7 8 9 10}
	do_test in-1.3 {
	execsql {SELECT a FROM t1 WHERE b BETWEEN a AND a*5 ORDER BY a}
	} {1 2 3 4}
	do_test in-1.4 {
	execsql {SELECT a FROM t1 WHERE b NOT BETWEEN a AND a*5 ORDER BY a}
	} {5 6 7 8 9 10}
	do_test in-1.6 {
	execsql {SELECT a FROM t1 WHERE b BETWEEN a AND a*5 OR b=512 ORDER BY a}
	} {1 2 3 4 9}
	do_test in-1.7 {
	execsql {SELECT a+ 100*(a BETWEEN 1 and 3) FROM t1 ORDER BY b}
	} {101 102 103 4 5 6 7 8 9 10}

	# The rest of this file concentrates on testing the IN operator.
	# Skip this if the library is compiled with SQLITE_OMIT_SUBQUERY
	# (because the IN operator is unavailable).
	#
	ifcapable !subquery {
	finish_test
	return
	}

	# Testing of the IN operator using static lists on the right-hand side.
	#
	do_test in-2.1 {
	execsql {SELECT a FROM t1 WHERE b IN (8,12,16,24,32) ORDER BY a}
	} {3 4 5}
	do_test in-2.2 {
	execsql {SELECT a FROM t1 WHERE b NOT IN (8,12,16,24,32) ORDER BY a}
	} {1 2 6 7 8 9 10}
	do_test in-2.3 {
	execsql {SELECT a FROM t1 WHERE b IN (8,12,16,24,32) OR b=512 ORDER BY a}
	} {3 4 5 9}
	do_test in-2.4 {
	execsql {SELECT a FROM t1 WHERE b NOT IN (8,12,16,24,32) OR b=512 ORDER BY a}
	} {1 2 6 7 8 9 10}
	do_test in-2.5 {
	execsql {SELECT a+100*(b IN (8,16,24)) FROM t1 ORDER BY b}
	} {1 2 103 104 5 6 7 8 9 10}

	do_test in-2.6 {
	execsql {SELECT a FROM t1 WHERE b IN (b+8,64)}
	} {6}
	do_test in-2.7 {
	execsql {SELECT a FROM t1 WHERE b IN (max(5,10,b),20)}
	} {4 5 6 7 8 9 10}
	do_test in-2.8 {
	execsql {SELECT a FROM t1 WHERE b IN (8*2,64/2) ORDER BY b}
	} {4 5}
	do_test in-2.9 {
	execsql {SELECT a FROM t1 WHERE b IN (max(5,10),20)}
	} {}
	do_test in-2.10 {
	execsql {SELECT a FROM t1 WHERE min(0,b IN (a,30))}
	} {}
	do_test in-2.11 {
	set v [catch {execsql {SELECT a FROM t1 WHERE c IN (10,20)}} msg]
	lappend v $msg
	} {1 {no such column: c}}

	# Testing the IN operator where the right-hand side is a SELECT
	#
	do_test in-3.1 {
	execsql {
	SELECT a FROM t1
	WHERE b IN (SELECT b FROM t1 WHERE a<5)
	ORDER BY a
	}
	} {1 2 3 4}
	do_test in-3.2 {
	execsql {
	SELECT a FROM t1
	WHERE b IN (SELECT b FROM t1 WHERE a<5) OR b==512
	ORDER BY a
	}
	} {1 2 3 4 9}
	do_test in-3.3 {
	execsql {
	SELECT a + 100*(b IN (SELECT b FROM t1 WHERE a<5)) FROM t1 ORDER BY b
	}
	} {101 102 103 104 5 6 7 8 9 10}

	# Make sure the UPDATE and DELETE commands work with IN-SELECT
	#
	do_test in-4.1 {
	execsql {
	UPDATE t1 SET b=b*2
	WHERE b IN (SELECT b FROM t1 WHERE a>8)
	}
	execsql {SELECT b FROM t1 ORDER BY b}
	} {2 4 8 16 32 64 128 256 1024 2048}
	do_test in-4.2 {
	execsql {
	DELETE FROM t1 WHERE b IN (SELECT b FROM t1 WHERE a>8)
	}
	execsql {SELECT a FROM t1 ORDER BY a}
	} {1 2 3 4 5 6 7 8}
	do_test in-4.3 {
	execsql {
	DELETE FROM t1 WHERE b NOT IN (SELECT b FROM t1 WHERE a>4)
	}
	execsql {SELECT a FROM t1 ORDER BY a}
	} {5 6 7 8}

	# Do an IN with a constant RHS but where the RHS has many, many
	# elements. We need to test that collisions in the hash table
	# are resolved properly.
	#
	do_test in-5.1 {
	execsql {
	INSERT INTO t1 VALUES('hello', 'world');
	SELECT * FROM t1
	WHERE a IN (
	'Do','an','IN','with','a','constant','RHS','but','where','the',
	'has','many','elements','We','need','to','test','that',
	'collisions','hash','table','are','resolved','properly',
	'This','in-set','contains','thirty','one','entries','hello');
	}
	} {hello world}

	# Make sure the IN operator works with INTEGER PRIMARY KEY fields.
	#
	do_test in-6.1 {
	execsql {
	CREATE TABLE ta(a INTEGER PRIMARY KEY, b);
	INSERT INTO ta VALUES(1,1);
	INSERT INTO ta VALUES(2,2);
	INSERT INTO ta VALUES(3,3);
	INSERT INTO ta VALUES(4,4);
	INSERT INTO ta VALUES(6,6);
	INSERT INTO ta VALUES(8,8);
	INSERT INTO ta VALUES(10,
	'This is a key that is long enough to require a malloc in the VDBE');
	SELECT * FROM ta WHERE a<10;
	}
	} {1 1 2 2 3 3 4 4 6 6 8 8}
	do_test in-6.2 {
	execsql {
	CREATE TABLE tb(a INTEGER PRIMARY KEY, b);
	INSERT INTO tb VALUES(1,1);
	INSERT INTO tb VALUES(2,2);
	INSERT INTO tb VALUES(3,3);
	INSERT INTO tb VALUES(5,5);
	INSERT INTO tb VALUES(7,7);
	INSERT INTO tb VALUES(9,9);
	INSERT INTO tb VALUES(11,
	'This is a key that is long enough to require a malloc in the VDBE');
	SELECT * FROM tb WHERE a<10;
	}
	} {1 1 2 2 3 3 5 5 7 7 9 9}
	do_test in-6.3 {
	execsql {
	SELECT a FROM ta WHERE b IN (SELECT a FROM tb);
	}
	} {1 2 3}
	do_test in-6.4 {
	execsql {
	SELECT a FROM ta WHERE b NOT IN (SELECT a FROM tb);
	}
	} {4 6 8 10}
	do_test in-6.5 {
	execsql {
	SELECT a FROM ta WHERE b IN (SELECT b FROM tb);
	}
	} {1 2 3 10}
	do_test in-6.6 {
	execsql {
	SELECT a FROM ta WHERE b NOT IN (SELECT b FROM tb);
	}
	} {4 6 8}
	do_test in-6.7 {
	execsql {
	SELECT a FROM ta WHERE a IN (SELECT a FROM tb);
	}
	} {1 2 3}
	do_test in-6.8 {
	execsql {
	SELECT a FROM ta WHERE a NOT IN (SELECT a FROM tb);
	}
	} {4 6 8 10}
	do_test in-6.9 {
	execsql {
	SELECT a FROM ta WHERE a IN (SELECT b FROM tb);
	}
	} {1 2 3}
	do_test in-6.10 {
	execsql {
	SELECT a FROM ta WHERE a NOT IN (SELECT b FROM tb);
	}
	} {4 6 8 10}

	# Tests of IN operator against empty sets. (Ticket #185)
	#
	do_test in-7.1 {
	execsql {
	SELECT a FROM t1 WHERE a IN ();
	}
	} {}
	do_test in-7.2 {
	execsql {
	SELECT a FROM t1 WHERE a IN (5);
	}
	} {5}
	do_test in-7.3 {
	execsql {
	SELECT a FROM t1 WHERE a NOT IN () ORDER BY a;
	}
	} {5 6 7 8 hello}
	do_test in-7.4 {
	execsql {
	SELECT a FROM t1 WHERE a IN (5) AND b IN ();
	}
	} {}
	do_test in-7.5 {
	execsql {
	SELECT a FROM t1 WHERE a IN (5) AND b NOT IN ();
	}
	} {5}
	do_test in-7.6.1 {
	execsql {
	SELECT a FROM ta WHERE a IN ();
	}
	} {}
	do_test in-7.6.2 {
	db status step
	} {0}
	do_test in-7.7 {
	execsql {
	SELECT a FROM ta WHERE a NOT IN ();
	}
	} {1 2 3 4 6 8 10}

	do_test in-7.8.1 {
	execsql {
	SELECT * FROM ta LEFT JOIN tb ON (ta.b=tb.b) WHERE ta.a IN ();
	}
	} {}
	do_test in-7.8.2 {
	db status step
	} {0}

	do_test in-8.1 {
	execsql {
	SELECT b FROM t1 WHERE a IN ('hello','there')
	}
	} {world}
	do_test in-8.2 {
	execsql {
	SELECT b FROM t1 WHERE a IN ("hello",'there')
	}
	} {world}

	# Test constructs of the form: expr IN tablename
	#
	do_test in-9.1 {
	execsql {
	CREATE TABLE t4 AS SELECT a FROM tb;
	SELECT * FROM t4;
	}
	} {1 2 3 5 7 9 11}
	do_test in-9.2 {
	execsql {
	SELECT b FROM t1 WHERE a IN t4;
	}
	} {32 128}
	do_test in-9.3 {
	execsql {
	SELECT b FROM t1 WHERE a NOT IN t4;
	}
	} {64 256 world}
	do_test in-9.4 {
	catchsql {
	SELECT b FROM t1 WHERE a NOT IN tb;
	}
	} {1 {sub-select returns 2 columns - expected 1}}

	# IN clauses in CHECK constraints. Ticket #1645
	#
	do_test in-10.1 {
	execsql {
	CREATE TABLE t5(
	a INTEGER,
	CHECK( a IN (111,222,333) )
	);
	INSERT INTO t5 VALUES(111);
	SELECT * FROM t5;
	}
	} {111}
	do_test in-10.2 {
	catchsql {
	INSERT INTO t5 VALUES(4);
	}
	} {1 {CHECK constraint failed: t5}}

	# Ticket #1821
	#
	# Type affinity applied to the right-hand side of an IN operator.
	#
	do_test in-11.1 {
	execsql {
	CREATE TABLE t6(a,b NUMERIC);
	INSERT INTO t6 VALUES(1,2);
	INSERT INTO t6 VALUES(2,3);
	SELECT * FROM t6 WHERE b IN (2);
	}
	} {1 2}
	do_test in-11.2 {
	# The '2' should be coerced into 2 because t6.b is NUMERIC
	execsql {
	SELECT * FROM t6 WHERE b IN ('2');
	}
	} {1 2}
	do_test in-11.3 {
	# No coercion should occur here because of the unary + before b.
	execsql {
	SELECT * FROM t6 WHERE +b IN ('2');
	}
	} {}
	do_test in-11.4 {
	# No coercion because column a as affinity NONE
	execsql {
	SELECT * FROM t6 WHERE a IN ('2');
	}
	} {}
	do_test in-11.5 {
	execsql {
	SELECT * FROM t6 WHERE a IN (2);
	}
	} {2 3}
	do_test in-11.6 {
	# No coercion because column a as affinity NONE
	execsql {
	SELECT * FROM t6 WHERE +a IN ('2');
	}
	} {}

	# Test error conditions with expressions of the form IN(<compound select>).
	#
	ifcapable compound {
	do_test in-12.1 {
	execsql {
	CREATE TABLE t2(a, b, c);
	CREATE TABLE t3(a, b, c);
	}
	} {}
	do_test in-12.2 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION ALL SELECT a, b FROM t2
	);
	}
	} {1 {sub-select returns 2 columns - expected 1}}
	do_test in-12.3 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION SELECT a, b FROM t2
	);
	}
	} {1 {sub-select returns 2 columns - expected 1}}
	do_test in-12.4 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 EXCEPT SELECT a, b FROM t2
	);
	}
	} {1 {sub-select returns 2 columns - expected 1}}
	do_test in-12.5 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 INTERSECT SELECT a, b FROM t2
	);
	}
	} {1 {sub-select returns 2 columns - expected 1}}
	do_test in-12.6 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION ALL SELECT a FROM t2
	);
	}
	} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
	do_test in-12.7 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION SELECT a FROM t2
	);
	}
	} {1 {SELECTs to the left and right of UNION do not have the same number of result columns}}
	do_test in-12.8 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 EXCEPT SELECT a FROM t2
	);
	}
	} {1 {SELECTs to the left and right of EXCEPT do not have the same number of result columns}}
	do_test in-12.9 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 INTERSECT SELECT a FROM t2
	);
	}
	} {1 {SELECTs to the left and right of INTERSECT do not have the same number of result columns}}
	}

	ifcapable compound {
	do_test in-12.10 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a FROM t3 UNION ALL SELECT a, b FROM t2
	);
	}
	} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
	do_test in-12.11 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a FROM t3 UNION SELECT a, b FROM t2
	);
	}
	} {1 {SELECTs to the left and right of UNION do not have the same number of result columns}}
	do_test in-12.12 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a FROM t3 EXCEPT SELECT a, b FROM t2
	);
	}
	} {1 {SELECTs to the left and right of EXCEPT do not have the same number of result columns}}
	do_test in-12.13 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a FROM t3 INTERSECT SELECT a, b FROM t2
	);
	}
	} {1 {SELECTs to the left and right of INTERSECT do not have the same number of result columns}}
	do_test in-12.14 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION ALL SELECT a, b FROM t2
	);
	}
	} {1 {sub-select returns 2 columns - expected 1}}
	do_test in-12.15 {
	catchsql {
	SELECT * FROM t2 WHERE a IN (
	SELECT a, b FROM t3 UNION ALL SELECT a FROM t2
	);
	}
	} {1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}}
	}; #ifcapable compound


	#------------------------------------------------------------------------
	# The following tests check that NULL is handled correctly when it
	# appears as part of a set of values on the right-hand side of an
	# IN or NOT IN operator.
	#
	# When it appears in such a set, NULL is handled as an "unknown value".
	# If, because of the unknown value in the set, the result of the expression
	# cannot be determined, then it itself evaluates to NULL.
	#

	# Warm body test to demonstrate the principles being tested:
	#
	do_test in-13.1 {
	db nullvalue "null"
	execsql { SELECT
	1 IN (NULL, 1, 2), -- The value 1 is a member of the set, return true.
	3 IN (NULL, 1, 2), -- Ambiguous, return NULL.
	1 NOT IN (NULL, 1, 2), -- The value 1 is a member of the set, return false.
	3 NOT IN (NULL, 1, 2) -- Ambiguous, return NULL.
	}
	} {1 null 0 null}

	do_test in-13.2 {
	execsql {
	CREATE TABLE t7(a, b, c NOT NULL);
	INSERT INTO t7 VALUES(1, 1, 1);
	INSERT INTO t7 VALUES(2, 2, 2);
	INSERT INTO t7 VALUES(3, 3, 3);
	INSERT INTO t7 VALUES(NULL, 4, 4);
	INSERT INTO t7 VALUES(NULL, 5, 5);
	}
	} {}

	do_test in-13.3 {
	execsql { SELECT 2 IN (SELECT a FROM t7) }
	} {1}
	do_test in-13.4 {
	execsql { SELECT 6 IN (SELECT a FROM t7) }
	} {null}

	do_test in-13.5 {
	execsql { SELECT 2 IN (SELECT b FROM t7) }
	} {1}
	do_test in-13.6 {
	execsql { SELECT 6 IN (SELECT b FROM t7) }
	} {0}

	do_test in-13.7 {
	execsql { SELECT 2 IN (SELECT c FROM t7) }
	} {1}
	do_test in-13.8 {
	execsql { SELECT 6 IN (SELECT c FROM t7) }
	} {0}

	do_test in-13.9 {
	execsql {
	SELECT
	2 NOT IN (SELECT a FROM t7),
	6 NOT IN (SELECT a FROM t7),
	2 NOT IN (SELECT b FROM t7),
	6 NOT IN (SELECT b FROM t7),
	2 NOT IN (SELECT c FROM t7),
	6 NOT IN (SELECT c FROM t7)
	}
	} {0 null 0 1 0 1}

	do_test in-13.10 {
	execsql {
	SELECT b IN (
	SELECT inside.a
	FROM t7 AS inside
	WHERE inside.b BETWEEN outside.b+1 AND outside.b+2
	)
	FROM t7 AS outside ORDER BY b;
	}
	} {0 null null null 0}

	do_test in-13.11 {
	execsql {
	SELECT b NOT IN (
	SELECT inside.a
	FROM t7 AS inside
	WHERE inside.b BETWEEN outside.b+1 AND outside.b+2
	)
	FROM t7 AS outside ORDER BY b;
	}
	} {1 null null null 1}

	do_test in-13.12 {
	execsql {
	CREATE INDEX i1 ON t7(a);
	CREATE INDEX i2 ON t7(b);
	CREATE INDEX i3 ON t7(c);
	}
	execsql {
	SELECT
	2 IN (SELECT a FROM t7),
	6 IN (SELECT a FROM t7),
	2 IN (SELECT b FROM t7),
	6 IN (SELECT b FROM t7),
	2 IN (SELECT c FROM t7),
	6 IN (SELECT c FROM t7)
	}
	} {1 null 1 0 1 0}

	do_test in-13.13 {
	execsql {
	SELECT
	2 NOT IN (SELECT a FROM t7),
	6 NOT IN (SELECT a FROM t7),
	2 NOT IN (SELECT b FROM t7),
	6 NOT IN (SELECT b FROM t7),
	2 NOT IN (SELECT c FROM t7),
	6 NOT IN (SELECT c FROM t7)
	}
	} {0 null 0 1 0 1}

	do_test in-13.14 {
	execsql {
	BEGIN TRANSACTION;
	CREATE TABLE a(id INTEGER);
	INSERT INTO a VALUES(1);
	INSERT INTO a VALUES(2);
	INSERT INTO a VALUES(3);
	CREATE TABLE b(id INTEGER);
	INSERT INTO b VALUES(NULL);
	INSERT INTO b VALUES(3);
	INSERT INTO b VALUES(4);
	INSERT INTO b VALUES(5);
	COMMIT;
	SELECT * FROM a WHERE id NOT IN (SELECT id FROM b);
	}
	} {}
	do_test in-13.14 {
	execsql {
	CREATE INDEX i5 ON b(id);
	SELECT * FROM a WHERE id NOT IN (SELECT id FROM b);
	}
	} {}

	do_test in-13.15 {
	catchsql {
	SELECT 0 WHERE (SELECT 0,0) OR (0 IN (1,2));
	}
	} {1 {sub-select returns 2 columns - expected 1}}


	do_test in-13.X {
	db nullvalue ""
	} {}

	# At one point the following was causing valgrind to report a "jump
	# depends on unitialized location" problem.
	#
	do_execsql_test in-14.0 {
	CREATE TABLE c1(a);
	INSERT INTO c1 VALUES(1), (2), (4), (3);
	}
	do_execsql_test in-14.1 {
	SELECT * FROM c1 WHERE a IN (SELECT a FROM c1) ORDER BY 1
	} {1 2 3 4}

	# 2019-02-20 Ticket https://www.sqlite.org/src/tktview/df46dfb631f75694fbb97033b69
	#
	do_execsql_test in-15.0 {
	DROP TABLE IF EXISTS t1;
	CREATE TABLE IF NOT EXISTS t1(id INTEGER PRIMARY KEY);
	INSERT INTO t1 VALUES(1);
	SELECT a.id FROM t1 AS a JOIN t1 AS b ON a.id=b.id WHERE a.id IN (1,2,3);
	} {1}
	do_execsql_test in-15.1 {
	DROP TABLE IF EXISTS t2;
	CREATE TABLE t2(a INTEGER PRIMARY KEY,b);
	INSERT INTO t2 VALUES(1,11);
	INSERT INTO t2 VALUES(2,22);
	INSERT INTO t2 VALUES(3,33);
	SELECT b, a IN (3,4,5) FROM t2 ORDER BY b;
	} {11 0 22 0 33 1}
	do_execsql_test in-15.2 {
	DROP TABLE IF EXISTS t3;
	CREATE TABLE t3(x INTEGER PRIMARY KEY);
	INSERT INTO t3 VALUES(8);
	SELECT CASE WHEN x NOT IN (5,6,7) THEN 'yes' ELSE 'no' END FROM t3;
	SELECT CASE WHEN x NOT IN (NULL,6,7) THEN 'yes' ELSE 'no' END FROM t3;
	} {yes no}
	do_execsql_test in-15.3 {
	SELECT CASE WHEN x NOT IN (5,6,7) OR x=0 THEN 'yes' ELSE 'no' END FROM t3;
	SELECT CASE WHEN x NOT IN (NULL,6,7) OR x=0 THEN 'yes' ELSE 'no' END FROM t3;
	} {yes no}
	do_execsql_test in-15.4 {
	DROP TABLE IF EXISTS t4;
	CREATE TABLE t4(a INTEGER PRIMARY KEY, b INT);
	WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<20)
	INSERT INTO t4(a,b) SELECT x, x+100 FROM c;
	SELECT b FROM t4 WHERE a IN (3,null,8) ORDER BY +b;
	} {103 108}
	do_execsql_test in-15.5 {
	SELECT b FROM t4 WHERE a NOT IN (3,null,8);
	} {}
	do_execsql_test in-15.6 {
	DROP TABLE IF EXISTS t5;
	DROP TABLE IF EXISTS t6;
	CREATE TABLE t5(id INTEGER PRIMARY KEY, name TEXT);
	CREATE TABLE t6(id INTEGER PRIMARY KEY, name TEXT, t5_id INT);
	INSERT INTO t5 VALUES(1,'Alice'),(2,'Emma');
	INSERT INTO t6 VALUES(1,'Bob',1),(2,'Cindy',1),(3,'Dave',2);
	SELECT a.*
	FROM t5 AS 'a' JOIN t5 AS 'b' ON b.id=a.id
	WHERE b.id IN (
	SELECT t6.t5_id
	FROM t6
	WHERE name='Bob'
	AND t6.t5_id IS NOT NULL
	AND t6.id IN (
	SELECT id
	FROM (SELECT t6.id, count(*) AS x
	FROM t6
	WHERE name='Bob'
	) AS 't'
	WHERE x=1
	)
	AND t6.id IN (1,id)
	);
	} {1 Alice}

	#-------------------------------------------------------------------------
	reset_db
	do_execsql_test in-16.0 {
	CREATE TABLE x1(a, b);
	INSERT INTO x1(a) VALUES(1), (2), (3), (4), (5), (6);
	CREATE INDEX x1i ON x1(a, b);
	}

	do_execsql_test in-16.1 {
	SELECT * FROM x1
	WHERE a IN (SELECT a FROM x1 WHERE (a%2)==0)
	ORDER BY a DESC, b;
	} {6 {} 4 {} 2 {}}

	do_execsql_test in-16.2 {
	SELECT * FROM x1
	WHERE a IN (SELECT a FROM x1 WHERE (a%7)==0)
	ORDER BY a DESC, b;
	} {}

	# 2019-06-11
	# https://www.sqlite.org/src/info/57353f8243c637c0
	#
	do_execsql_test in-17.1 {
	SELECT 1 IN ('1');
	} 0
	do_execsql_test in-17.2 {
	SELECT 1 IN ('1' COLLATE nocase);
	} 0
	do_execsql_test in-17.3 {
	SELECT 1 IN (CAST('1' AS text));
	} 0
	do_execsql_test in-17.4 {
	SELECT 1 IN (CAST('1' AS text) COLLATE nocase);
	} 0

	finish_test