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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 3eac0f13a3d8ae71c1c5ec884b0192bd68ae7e5f:


# 2003 December 17
#
# 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.
#
# This file implements tests for miscellanous features that were
# left out of other test files.
#
# $Id: misc3.test,v 1.9 2004/03/02 18:37:42 drh Exp $

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

# Ticket #529.  Make sure an ABORT does not damage the in-memory cache
# that will be used by subsequent statements in the same transaction.
#
do_test misc3-1.1 {
  execsql {
    CREATE TABLE t1(a UNIQUE,b);
    INSERT INTO t1
      VALUES(1,'a23456789_b23456789_c23456789_d23456789_e23456789_');
    UPDATE t1 SET b=b||b;
    UPDATE t1 SET b=b||b;
    UPDATE t1 SET b=b||b;
    UPDATE t1 SET b=b||b;
    UPDATE t1 SET b=b||b;
    INSERT INTO t1 VALUES(2,'x');
    UPDATE t1 SET b=substr(b,1,500);
    BEGIN;
  }
  catchsql {UPDATE t1 SET a=CASE a WHEN 2 THEN 1 ELSE a END, b='y';}
  execsql {
    CREATE TABLE t2(x,y);
    COMMIT;
    PRAGMA integrity_check;
  }
} ok
do_test misc3-1.2 {
  execsql {
    DROP TABLE t1;
    DROP TABLE t2;
    VACUUM;
    CREATE TABLE t1(a UNIQUE,b);
    INSERT INTO t1
       VALUES(1,'a23456789_b23456789_c23456789_d23456789_e23456789_');
    INSERT INTO t1 SELECT a+1, b||b FROM t1;
    INSERT INTO t1 SELECT a+2, b||b FROM t1;
    INSERT INTO t1 SELECT a+4, b FROM t1;
    INSERT INTO t1 SELECT a+8, b FROM t1;
    INSERT INTO t1 SELECT a+16, b FROM t1;
    INSERT INTO t1 SELECT a+32, b FROM t1;
    INSERT INTO t1 SELECT a+64, b FROM t1;

    BEGIN;
  }
  catchsql {UPDATE t1 SET a=CASE a WHEN 128 THEN 127 ELSE a END, b='';}
  execsql {
    INSERT INTO t1 VALUES(200,'hello out there');
    COMMIT;
    PRAGMA integrity_check;
  }
} ok

# Tests of the sqliteAtoF() function in util.c
#
do_test misc3-2.1 {
  execsql {SELECT 2e-25*0.5e25}
} 1
do_test misc3-2.2 {
  execsql {SELECT 2.0e-25*000000.500000000000000000000000000000e+00025}
} 1
do_test misc3-2.3 {
  execsql {SELECT 000000000002e-0000000025*0.5e25}
} 1
do_test misc3-2.4 {
  execsql {SELECT 2e-25*0.5e250}
} 1e+225
do_test misc3-2.5 {
  execsql {SELECT 2.0e-250*0.5e25}
} 1e-225
do_test misc3-2.6 {
  execsql {SELECT '-2.0e-127' * '-0.5e27'}
} 1e-100
do_test misc3-2.7 {
  execsql {SELECT '+2.0e-127' * '-0.5e27'}
} -1e-100
do_test misc3-2.8 {
  execsql {SELECT 2.0e-27 * '+0.5e+127'}
} 1e+100
do_test misc3-2.9 {
  execsql {SELECT 2.0e-27 * '+0.000005e+132'}
} 1e+100

# Ticket #522.  Make sure integer overflow is handled properly in
# indices.
#
do_test misc3-3.1 {
  execsql {PRAGMA integrity_check}
} ok
do_test misc3-3.2 {
  execsql {
    CREATE TABLE t2(a INT UNIQUE);
    PRAGMA integrity_check;
  }
} ok
do_test misc3-3.3 {
  execsql {
    INSERT INTO t2 VALUES(2147483648);
    PRAGMA integrity_check;
  }
} ok
do_test misc3-3.4 {
  execsql {
    INSERT INTO t2 VALUES(-2147483649);
    PRAGMA integrity_check;
  }
} ok
do_test misc3-3.5 {
  execsql {
    INSERT INTO t2 VALUES(+2147483649);
    PRAGMA integrity_check;
  }
} ok
do_test misc3-3.6 {
  execsql {
    INSERT INTO t2 VALUES(+2147483647);
    INSERT INTO t2 VALUES(-2147483648);
    INSERT INTO t2 VALUES(-2147483647);
    INSERT INTO t2 VALUES(2147483646);
    SELECT * FROM t2 ORDER BY a;
  }
} {-2147483649 -2147483648 -2147483647 2147483646 2147483647 2147483648 2147483649}
do_test misc3-3.7 {
  execsql {
    SELECT * FROM t2 WHERE a>=-2147483648 ORDER BY a;
  }
} {-2147483648 -2147483647 2147483646 2147483647 2147483648 2147483649}
do_test misc3-3.8 {
  execsql {
    SELECT * FROM t2 WHERE a>-2147483648 ORDER BY a;
  }
} {-2147483647 2147483646 2147483647 2147483648 2147483649}
do_test misc3-3.9 {
  execsql {
    SELECT * FROM t2 WHERE a>-2147483649 ORDER BY a;
  }
} {-2147483648 -2147483647 2147483646 2147483647 2147483648 2147483649}
do_test misc3-3.10 {
  execsql {
    SELECT * FROM t2 WHERE a>=0 AND a<2147483649 ORDER BY a DESC;
  }
} {2147483648 2147483647 2147483646}
do_test misc3-3.11 {
  execsql {
    SELECT * FROM t2 WHERE a>=0 AND a<=2147483648 ORDER BY a DESC;
  }
} {2147483648 2147483647 2147483646}
do_test misc3-3.12 {
  execsql {
    SELECT * FROM t2 WHERE a>=0 AND a<2147483648 ORDER BY a DESC;
  }
} {2147483647 2147483646}
do_test misc3-3.13 {
  execsql {
    SELECT * FROM t2 WHERE a>=0 AND a<=2147483647 ORDER BY a DESC;
  }
} {2147483647 2147483646}
do_test misc3-3.14 {
  execsql {
    SELECT * FROM t2 WHERE a>=0 AND a<2147483647 ORDER BY a DESC;
  }
} {2147483646}

# Ticket #565.  A stack overflow is occurring when the subquery to the
# right of an IN operator contains many NULLs
#
do_test misc3-4.1 {
  execsql {
    CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
    INSERT INTO t3(b) VALUES('abc');
    INSERT INTO t3(b) VALUES('xyz');
    INSERT INTO t3(b) VALUES(NULL);
    INSERT INTO t3(b) VALUES(NULL);
    INSERT INTO t3(b) SELECT b||'d' FROM t3;
    INSERT INTO t3(b) SELECT b||'e' FROM t3;
    INSERT INTO t3(b) SELECT b||'f' FROM t3;
    INSERT INTO t3(b) SELECT b||'g' FROM t3;
    INSERT INTO t3(b) SELECT b||'h' FROM t3;
    SELECT count(a), count(b) FROM t3;
  }
} {128 64}
do_test misc3-4.2 {
  execsql {
    SELECT count(a) FROM t3 WHERE b IN (SELECT b FROM t3);
  }
} {64}
do_test misc3-4.3 {
  execsql {
    SELECT count(a) FROM t3 WHERE b IN (SELECT b FROM t3 ORDER BY a+1);
  }
} {64}

# Ticket #601:  Putting a left join inside "SELECT * FROM (<join-here>)"
# gives different results that if the outer "SELECT * FROM ..." is omitted.
#
do_test misc3-5.1 {
  execsql {
    CREATE TABLE x1 (b, c);
    INSERT INTO x1 VALUES('dog',3);
    INSERT INTO x1 VALUES('cat',1);
    INSERT INTO x1 VALUES('dog',4);
    CREATE TABLE x2 (c, e);
    INSERT INTO x2 VALUES(1,'one');
    INSERT INTO x2 VALUES(2,'two');
    INSERT INTO x2 VALUES(3,'three');
    INSERT INTO x2 VALUES(4,'four');
    SELECT x2.c AS c, e, b FROM x2 LEFT JOIN
       (SELECT b, max(c) AS c FROM x1 GROUP BY b)
       USING(c);
  }
} {1 one cat 2 two {} 3 three {} 4 four dog}
do_test misc4-5.2 {
  execsql {
    SELECT * FROM (
      SELECT x2.c AS c, e, b FROM x2 LEFT JOIN
         (SELECT b, max(c) AS c FROM x1 GROUP BY b)
         USING(c)
    );
  }
} {1 one cat 2 two {} 3 three {} 4 four dog}

# Ticket #626:  make sure EXPLAIN prevents BEGIN and COMMIT from working.
#
do_test misc3-6.1 {
  execsql {EXPLAIN BEGIN}
  catchsql {BEGIN}
} {0 {}}
do_test misc3-6.2 {
  execsql {EXPLAIN COMMIT}
  catchsql {COMMIT}
} {0 {}}
do_test misc3-6.3 {
  execsql {BEGIN; EXPLAIN ROLLBACK}
  catchsql {ROLLBACK}
} {0 {}}

# Ticket #640:  vdbe stack overflow with a LIMIT clause on a SELECT inside
# of a trigger.
#
do_test misc3-7.1 {
  execsql {
    BEGIN;
    CREATE TABLE y1(a);
    CREATE TABLE y2(b);
    CREATE TABLE y3(c);
    CREATE TRIGGER r1 AFTER DELETE ON y1 FOR EACH ROW BEGIN
      INSERT INTO y3(c) SELECT b FROM y2 ORDER BY b LIMIT 1;
    END;
    INSERT INTO y1 VALUES(1);
    INSERT INTO y1 VALUES(2);
    INSERT INTO y1 SELECT a+2 FROM y1;
    INSERT INTO y1 SELECT a+4 FROM y1;
    INSERT INTO y1 SELECT a+8 FROM y1;
    INSERT INTO y1 SELECT a+16 FROM y1;
    INSERT INTO y2 SELECT a FROM y1;
    COMMIT;
    SELECT count(*) FROM y1;
  }
} 32
do_test misc3-7.2 {
  execsql {
    DELETE FROM y1;
    SELECT count(*) FROM y1;
  }
} 0
do_test misc3-7.3 {
  execsql {
    SELECT count(*) FROM y3;
  }
} 32


finish_test