# 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 UPDATE statement.

#

# $Id: update.test,v 1.19 2008/04/10 18:44:36 drh Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Try to update an non-existent table

#

do_test update-1.1 {

  set v [catch {execsql {UPDATE test1 SET f2=5 WHERE f1<1}} msg]

  lappend v $msg

} {1 {no such table: test1}}

# Try to update a read-only table

#

do_test update-2.1 {

  set v [catch \

       {execsql {UPDATE sqlite_master SET name='xyz' WHERE name='123'}} msg]

  lappend v $msg

} {1 {table sqlite_master may not be modified}}

# Create a table to work with

#

do_test update-3.1 {

  execsql {CREATE TABLE test1(f1 int,f2 int)}

  for {set i 1} {$i<=10} {incr i} {

    set sql "INSERT INTO test1 VALUES($i,[expr {1<<$i}])"

    execsql $sql

  }

  execsql {SELECT * FROM test1 ORDER BY f1}

} {1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 1024}

# Unknown column name in an expression

#

do_test update-3.2 {

  set v [catch {execsql {UPDATE test1 SET f1=f3*2 WHERE f2==32}} msg]

  lappend v $msg

} {1 {no such column: f3}}

do_test update-3.3 {

  set v [catch {execsql {UPDATE test1 SET f1=test2.f1*2 WHERE f2==32}} msg]

  lappend v $msg

} {1 {no such column: test2.f1}}

do_test update-3.4 {

  set v [catch {execsql {UPDATE test1 SET f3=f1*2 WHERE f2==32}} msg]

  lappend v $msg

} {1 {no such column: f3}}

# Actually do some updates

#

do_test update-3.5 {

  execsql {UPDATE test1 SET f2=f2*3}

} {}

do_test update-3.5.1 {

  db changes

} {10}

# verify that SELECT does not reset the change counter

do_test update-3.5.2 {

  db eval {SELECT count(*) FROM test1}

} {10}

do_test update-3.5.3 {

  db changes

} {10}

do_test update-3.6 {

  execsql {SELECT * FROM test1 ORDER BY f1}

} {1 6 2 12 3 24 4 48 5 96 6 192 7 384 8 768 9 1536 10 3072}

do_test update-3.7 {

  execsql {PRAGMA count_changes=on}

  execsql {UPDATE test1 SET f2=f2/3 WHERE f1<=5}

} {5}

do_test update-3.8 {

  execsql {SELECT * FROM test1 ORDER BY f1}

} {1 2 2 4 3 8 4 16 5 32 6 192 7 384 8 768 9 1536 10 3072}

do_test update-3.9 {

  execsql {UPDATE test1 SET f2=f2/3 WHERE f1>5}

} {5}

do_test update-3.10 {

  execsql {SELECT * FROM test1 ORDER BY f1}

} {1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 1024}

# Swap the values of f1 and f2 for all elements

#

do_test update-3.11 {

  execsql {UPDATE test1 SET F2=f1, F1=f2}

} {10}

do_test update-3.12 {

  execsql {SELECT * FROM test1 ORDER BY F1}

} {2 1 4 2 8 3 16 4 32 5 64 6 128 7 256 8 512 9 1024 10}

do_test update-3.13 {

  execsql {PRAGMA count_changes=off}

  execsql {UPDATE test1 SET F2=f1, F1=f2}

} {}

do_test update-3.14 {

  execsql {SELECT * FROM test1 ORDER BY F1}

} {1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 1024}

# Create duplicate entries and make sure updating still

# works.

#

do_test update-4.0 {

  execsql {

    DELETE FROM test1 WHERE f1<=5;

    INSERT INTO test1(f1,f2) VALUES(8,88);

    INSERT INTO test1(f1,f2) VALUES(8,888);

    INSERT INTO test1(f1,f2) VALUES(77,128);

    INSERT INTO test1(f1,f2) VALUES(777,128);

  }

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-4.1 {

  execsql {UPDATE test1 SET f2=f2+1 WHERE f1==8}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 889 9 512 10 1024 77 128 777 128}

do_test update-4.2 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2>800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 888 9 512 10 1024 77 128 777 128}

do_test update-4.3 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2<800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-4.4 {

  execsql {UPDATE test1 SET f1=f1+1 WHERE f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 778 128}

do_test update-4.5 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1>100 and f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 777 128}

do_test update-4.6 {

  execsql {

    PRAGMA count_changes=on;

    UPDATE test1 SET f1=f1-1 WHERE f1<=100 and f2==128;

  }

} {2}

do_test update-4.7 {

  execsql {

    PRAGMA count_changes=off;

    SELECT * FROM test1 ORDER BY f1,f2

  }

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

# Repeat the previous sequence of tests with an index.

#

do_test update-5.0 {

  execsql {CREATE INDEX idx1 ON test1(f1)}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-5.1 {

  execsql {UPDATE test1 SET f2=f2+1 WHERE f1==8}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 889 9 512 10 1024 77 128 777 128}

do_test update-5.2 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2>800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 888 9 512 10 1024 77 128 777 128}

do_test update-5.3 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2<800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-5.4 {

  execsql {UPDATE test1 SET f1=f1+1 WHERE f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 778 128}

do_test update-5.4.1 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-5.4.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {778 128}

do_test update-5.4.3 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-5.5 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1>100 and f2==128}

} {}

do_test update-5.5.1 {

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 777 128}

do_test update-5.5.2 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-5.5.3 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-5.5.4 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-5.5.5 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-5.6 {

  execsql {

    PRAGMA count_changes=on;

    UPDATE test1 SET f1=f1-1 WHERE f1<=100 and f2==128;

  }

} {2}

do_test update-5.6.1 {

  execsql {

    PRAGMA count_changes=off;

    SELECT * FROM test1 ORDER BY f1,f2

  }

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-5.6.2 {

  execsql {SELECT * FROM test1 WHERE f1==77 ORDER BY f1,f2}

} {77 128}

do_test update-5.6.3 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-5.6.4 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-5.6.5 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 256 8 888}

# Repeat the previous sequence of tests with a different index.

#

execsql {PRAGMA synchronous=FULL}

do_test update-6.0 {

  execsql {DROP INDEX idx1}

  execsql {CREATE INDEX idx1 ON test1(f2)}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-6.1 {

  execsql {UPDATE test1 SET f2=f2+1 WHERE f1==8}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 889 9 512 10 1024 77 128 777 128}

do_test update-6.1.1 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 89 8 257 8 889}

do_test update-6.1.2 {

  execsql {SELECT * FROM test1 WHERE f2==89 ORDER BY f1,f2}

} {8 89}

do_test update-6.1.3 {

  execsql {SELECT * FROM test1 WHERE f1==88 ORDER BY f1,f2}

} {}

do_test update-6.2 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2>800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 888 9 512 10 1024 77 128 777 128}

do_test update-6.3 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2<800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-6.3.1 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 256 8 888}

do_test update-6.3.2 {

  execsql {SELECT * FROM test1 WHERE f2==89 ORDER BY f1,f2}

} {}

do_test update-6.3.3 {

  execsql {SELECT * FROM test1 WHERE f2==88 ORDER BY f1,f2}

} {8 88}

do_test update-6.4 {

  execsql {UPDATE test1 SET f1=f1+1 WHERE f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 778 128}

do_test update-6.4.1 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-6.4.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {778 128}

do_test update-6.4.3 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-6.5 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1>100 and f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 777 128}

do_test update-6.5.1 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-6.5.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-6.5.3 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-6.5.4 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-6.6 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1<=100 and f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-6.6.1 {

  execsql {SELECT * FROM test1 WHERE f1==77 ORDER BY f1,f2}

} {77 128}

do_test update-6.6.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-6.6.3 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-6.6.4 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 256 8 888}

# Repeat the previous sequence of tests with multiple

# indices

#

do_test update-7.0 {

  execsql {CREATE INDEX idx2 ON test1(f2)}

  execsql {CREATE INDEX idx3 ON test1(f1,f2)}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-7.1 {

  execsql {UPDATE test1 SET f2=f2+1 WHERE f1==8}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 889 9 512 10 1024 77 128 777 128}

do_test update-7.1.1 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 89 8 257 8 889}

do_test update-7.1.2 {

  execsql {SELECT * FROM test1 WHERE f2==89 ORDER BY f1,f2}

} {8 89}

do_test update-7.1.3 {

  execsql {SELECT * FROM test1 WHERE f1==88 ORDER BY f1,f2}

} {}

do_test update-7.2 {

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2>800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 89 8 257 8 888 9 512 10 1024 77 128 777 128}

do_test update-7.3 {

  # explain {UPDATE test1 SET f2=f2-1 WHERE f1==8 and F2<300}

  execsql {UPDATE test1 SET f2=f2-1 WHERE f1==8 and f2<800}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-7.3.1 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 256 8 888}

do_test update-7.3.2 {

  execsql {SELECT * FROM test1 WHERE f2==89 ORDER BY f1,f2}

} {}

do_test update-7.3.3 {

  execsql {SELECT * FROM test1 WHERE f2==88 ORDER BY f1,f2}

} {8 88}

do_test update-7.4 {

  execsql {UPDATE test1 SET f1=f1+1 WHERE f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 778 128}

do_test update-7.4.1 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-7.4.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {778 128}

do_test update-7.4.3 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-7.5 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1>100 and f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 8 88 8 128 8 256 8 888 9 512 10 1024 78 128 777 128}

do_test update-7.5.1 {

  execsql {SELECT * FROM test1 WHERE f1==78 ORDER BY f1,f2}

} {78 128}

do_test update-7.5.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-7.5.3 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-7.5.4 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 128 8 256 8 888}

do_test update-7.6 {

  execsql {UPDATE test1 SET f1=f1-1 WHERE f1<=100 and f2==128}

  execsql {SELECT * FROM test1 ORDER BY f1,f2}

} {6 64 7 128 8 88 8 256 8 888 9 512 10 1024 77 128 777 128}

do_test update-7.6.1 {

  execsql {SELECT * FROM test1 WHERE f1==77 ORDER BY f1,f2}

} {77 128}

do_test update-7.6.2 {

  execsql {SELECT * FROM test1 WHERE f1==778 ORDER BY f1,f2}

} {}

do_test update-7.6.3 {

  execsql {SELECT * FROM test1 WHERE f1==777 ORDER BY f1,f2}

} {777 128}

do_test update-7.6.4 {

  execsql {SELECT * FROM test1 WHERE f1==8 ORDER BY f1,f2}

} {8 88 8 256 8 888}

# Error messages

#

do_test update-9.1 {

  set v [catch {execsql {

    UPDATE test1 SET x=11 WHERE f1=1025

  }} msg]

  lappend v $msg

} {1 {no such column: x}}

do_test update-9.2 {

  set v [catch {execsql {

    UPDATE test1 SET f1=x(11) WHERE f1=1025

  }} msg]

  lappend v $msg

} {1 {no such function: x}}

do_test update-9.3 {

  set v [catch {execsql {

    UPDATE test1 SET f1=11 WHERE x=1025

  }} msg]

  lappend v $msg

} {1 {no such column: x}}

do_test update-9.4 {

  set v [catch {execsql {

    UPDATE test1 SET f1=11 WHERE x(f1)=1025

  }} msg]

  lappend v $msg

} {1 {no such function: x}}

# Try doing updates on a unique column where the value does not

# really change.

#

do_test update-10.1 {

  execsql {

    DROP TABLE test1;

    CREATE TABLE t1(

       a integer primary key,

       b UNIQUE, 

       c, d,

       e, f,

       UNIQUE(c,d)

    );

    INSERT INTO t1 VALUES(1,2,3,4,5,6);

    INSERT INTO t1 VALUES(2,3,4,4,6,7);

    SELECT * FROM t1

  }

} {1 2 3 4 5 6 2 3 4 4 6 7}

do_test update-10.2 {

  catchsql {

    UPDATE t1 SET a=1, e=9 WHERE f=6;

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 9 6 2 3 4 4 6 7}}

do_test update-10.3 {

  catchsql {

    UPDATE t1 SET a=1, e=10 WHERE f=7;

    SELECT * FROM t1;

  }

} {1 {PRIMARY KEY must be unique}}

do_test update-10.4 {

  catchsql {

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 9 6 2 3 4 4 6 7}}

do_test update-10.5 {

  catchsql {

    UPDATE t1 SET b=2, e=11 WHERE f=6;

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 11 6 2 3 4 4 6 7}}

do_test update-10.6 {

  catchsql {

    UPDATE t1 SET b=2, e=12 WHERE f=7;

    SELECT * FROM t1;

  }

} {1 {column b is not unique}}

do_test update-10.7 {

  catchsql {

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 11 6 2 3 4 4 6 7}}

do_test update-10.8 {

  catchsql {

    UPDATE t1 SET c=3, d=4, e=13 WHERE f=6;

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 13 6 2 3 4 4 6 7}}

do_test update-10.9 {

  catchsql {

    UPDATE t1 SET c=3, d=4, e=14 WHERE f=7;

    SELECT * FROM t1;

  }

} {1 {columns c, d are not unique}}

do_test update-10.10 {

  catchsql {

    SELECT * FROM t1;

  }

} {0 {1 2 3 4 13 6 2 3 4 4 6 7}}

# Make sure we can handle a subquery in the where clause.

#

ifcapable subquery {

  do_test update-11.1 {

    execsql {

      UPDATE t1 SET e=e+1 WHERE b IN (SELECT b FROM t1);

      SELECT b,e FROM t1;

    }

  } {2 14 3 7}

  do_test update-11.2 {

    execsql {

      UPDATE t1 SET e=e+1 WHERE a IN (SELECT a FROM t1);

      SELECT a,e FROM t1;

    }

  } {1 15 2 8}

}

integrity_check update-12.1

# Ticket 602.  Updates should occur in the same order as the records

# were discovered in the WHERE clause.

#

do_test update-13.1 {

  execsql {

    BEGIN;

    CREATE TABLE t2(a);

    INSERT INTO t2 VALUES(1);

    INSERT INTO t2 VALUES(2);

    INSERT INTO t2 SELECT a+2 FROM t2;

    INSERT INTO t2 SELECT a+4 FROM t2;

    INSERT INTO t2 SELECT a+8 FROM t2;

    INSERT INTO t2 SELECT a+16 FROM t2;

    INSERT INTO t2 SELECT a+32 FROM t2;