# 2012 August 24
#
# 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 that an index may be used as a covering
# index when there are OR expressions in the WHERE clause. 
#


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

do_execsql_test 1.1 {
  CREATE TABLE t(i,j,k,m,n);
  CREATE INDEX ijk ON t(i,j,k);
  CREATE INDEX jmn ON t(j,m,n);

  INSERT INTO t VALUES(3, 3, 'three', 3, 'tres');
  INSERT INTO t VALUES(2, 2, 'two', 2, 'dos');
  INSERT INTO t VALUES(1, 1, 'one', 1, 'uno');
  INSERT INTO t VALUES(4, 4, 'four', 4, 'cuatro');
}

do_execsql_test 1.2 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2);
} {one two}
do_execsql_test 1.3 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (+i=2 AND j=2);
} {one two}
do_execsql_test 1.4 {
  SELECT n FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2);
} {uno dos}
do_execsql_test 1.5 {
  SELECT k, n FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2);
} {one uno two dos}
do_execsql_test 1.6 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2) OR (i=3 AND j=3);
} {one two three}
do_execsql_test 1.7 {
  SELECT n FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2) OR (i=3 AND j=3);
} {uno dos tres}
do_execsql_test 1.8 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (j=2 AND m=2);
} {one two}
do_execsql_test 1.9 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2) OR (j=3 AND m=3);
} {one two three}
do_execsql_test 1.10 {
  SELECT n FROM t WHERE (i=1 AND j=1) OR (i=2 AND j=2) OR (j=3 AND m=3);
} {uno dos tres}
do_execsql_test 1.11 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (j=2 AND m=2) OR (i=3 AND j=3);
} {one two three}
do_execsql_test 1.12 {
  SELECT n FROM t WHERE (i=1 AND j=1) OR (j=2 AND m=2) OR (i=3 AND j=3);
} {uno dos tres}
do_execsql_test 1.13 {
  SELECT k FROM t WHERE (j=1 AND m=1) OR (i=2 AND j=2) OR (i=3 AND j=3);
} {one two three}
do_execsql_test 1.14 {
  SELECT k FROM t WHERE (i=1 AND j=1) OR (j=2 AND i=2) OR (i=3 AND j=3);
} {one two three}
do_execsql_test 1.15 {
  SELECT k FROM t WHERE (i=1 AND j=2) OR (i=2 AND j=1) OR (i=3 AND j=4);
} {}
do_execsql_test 1.16 {
  SELECT k FROM t WHERE (i=1 AND (j=1 or j=2)) OR (i=3 AND j=3);
} {one three}

do_execsql_test 2.0 {
  CREATE TABLE t1(a,b,c,d);
  CREATE INDEX t1b ON t1(b);
  CREATE INDEX t1c ON t1(c);
  CREATE INDEX t1d ON t1(d);
  CREATE TABLE t2(x,y);
  CREATE INDEX t2y ON t2(y);
  
  INSERT INTO t1 VALUES(1,2,3,4);
  INSERT INTO t1 VALUES(5,6,7,8);
  INSERT INTO t2 VALUES(1,2);
  INSERT INTO t2 VALUES(2,7);
  INSERT INTO t2 VALUES(3,4);
} {}
do_execsql_test 2.1 {
  SELECT a, x FROM t1 JOIN t2 ON +y=d OR x=7 ORDER BY a, x;
} {1 3}
do_execsql_test 2.2 {
  SELECT a, x FROM t1 JOIN t2 ON y=d OR x=7 ORDER BY a, x;
} {1 3}


# Similar to [do_execsql_test], except that two elements are appended
# to the result - the string "search" and the number of times test variable
# sqlite3_search_count is incremented by running the supplied SQL. e.g.
# 
#   do_searchcount_test 1.0 { SELECT * FROM t1 } {x y search 2}
#
proc do_searchcount_test {tn sql res} {
  uplevel [subst -nocommands {
    do_test $tn {
      set ::sqlite_search_count 0
      concat [db eval {$sql}] search [set ::sqlite_search_count]
    } [list $res]
  }] 
}

do_execsql_test 3.0 {
  CREATE TABLE t3(a, b, c);
  CREATE UNIQUE INDEX i3 ON t3(a, b);
  INSERT INTO t3 VALUES(1, 'one', 'i');
  INSERT INTO t3 VALUES(3, 'three', 'iii');
  INSERT INTO t3 VALUES(6, 'six', 'vi');
  INSERT INTO t3 VALUES(2, 'two', 'ii');
  INSERT INTO t3 VALUES(4, 'four', 'iv');
  INSERT INTO t3 VALUES(5, 'five', 'v');

  CREATE TABLE t4(x PRIMARY KEY, y);
  INSERT INTO t4 VALUES('a', 'one');
  INSERT INTO t4 VALUES('b', 'two');
}

do_searchcount_test 3.1 {
  SELECT a, b FROM t3 WHERE (a=1 AND b='one') OR (a=2 AND b='two')
} {1 one 2 two search 4}

do_searchcount_test 3.2 {
  SELECT a, c FROM t3 WHERE (a=1 AND b='one') OR (a=2 AND b='two')
} {1 i 2 ii search 6}

do_searchcount_test 3.4.1 {
  SELECT y FROM t4 WHERE x='a'
} {one search 2}
do_searchcount_test 3.4.2 {
  SELECT a, b FROM t3 WHERE 
        (a=1 AND b=(SELECT y FROM t4 WHERE x='a')) 
     OR (a=2 AND b='two')
} {1 one 2 two search 6}
do_searchcount_test 3.4.3 {
  SELECT a, b FROM t3 WHERE 
        (a=2 AND b='two')
     OR (a=1 AND b=(SELECT y FROM t4 WHERE x='a')) 
} {2 two 1 one search 6}
do_searchcount_test 3.4.4 {
  SELECT a, b FROM t3 WHERE 
        (a=2 AND b=(SELECT y FROM t4 WHERE x='b')) 
     OR (a=1 AND b=(SELECT y FROM t4 WHERE x='a')) 
} {2 two 1 one search 8}

do_searchcount_test 3.5.1 {
  SELECT a, b FROM t3 WHERE (a=1 AND b='one') OR rowid=4
} {1 one 2 two search 3}
do_searchcount_test 3.5.2 {
  SELECT a, c FROM t3 WHERE (a=1 AND b='one') OR rowid=4
} {1 i 2 ii search 3}

# Ticket [d02e1406a58ea02d] (2012-10-04)
# LEFT JOIN with an OR in the ON clause causes segfault 
#
do_test 4.1 {
  db eval {
    CREATE TABLE t41(a,b,c);
    INSERT INTO t41 VALUES(1,2,3), (4,5,6);
    CREATE TABLE t42(d,e,f);
    INSERT INTO t42 VALUES(3,6,9), (4,8,12);
    SELECT * FROM t41 AS x LEFT JOIN t42 AS y ON (y.d=x.c) OR (y.e=x.b);
  }
} {1 2 3 3 6 9 4 5 6 {} {} {}}
do_test 4.2 {
  db eval {
    CREATE INDEX t42d ON t42(d);
    CREATE INDEX t42e ON t42(e);
    SELECT * FROM t41 AS x LEFT JOIN t42 AS y ON (y.d=x.c) OR (y.e=x.b);
  }
} {1 2 3 3 6 9 4 5 6 {} {} {}}
do_test 4.3 {
  db eval {
    SELECT * FROM t41 AS x LEFT JOIN t42 AS y ON (y.d=x.c) OR (y.d=x.b);
  }
} {1 2 3 3 6 9 4 5 6 {} {} {}}

# Ticket [bc1aea7b725f276177]
# Incorrect result on LEFT JOIN with OR constraints and an ORDER BY clause.
#
do_execsql_test 4.4 {
  CREATE TABLE t44(a INTEGER, b INTEGER);
  INSERT INTO t44 VALUES(1,2);
  INSERT INTO t44 VALUES(3,4);
  SELECT *
    FROM t44 AS x
       LEFT JOIN (SELECT a AS c, b AS d FROM t44) AS y ON a=c
   WHERE d=4 OR d IS NULL;
} {3 4 3 4}
do_execsql_test 4.5 {
  SELECT *
    FROM t44 AS x
       LEFT JOIN (SELECT a AS c, b AS d FROM t44) AS y ON a=c
   WHERE d=4 OR d IS NULL
   ORDER BY a;
} {3 4 3 4}
do_execsql_test 4.6 {
  CREATE TABLE t46(c INTEGER, d INTEGER);
  INSERT INTO t46 SELECT a, b FROM t44;
  SELECT * FROM t44 LEFT JOIN t46 ON a=c
   WHERE d=4 OR d IS NULL;
} {3 4 3 4}
do_execsql_test 4.7 {
  SELECT * FROM t44 LEFT JOIN t46 ON a=c
   WHERE d=4 OR d IS NULL
   ORDER BY a;
} {3 4 3 4}

# Verify fix of a bug reported on the mailing list by Peter Reid
#
do_execsql_test 5.1 {
  DROP TABLE IF EXISTS t;
  CREATE TABLE t(c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15,c16,c17);
  CREATE INDEX tc0 ON t(c0);
  CREATE INDEX tc1 ON t(c1);
  CREATE INDEX tc2 ON t(c2);
  CREATE INDEX tc3 ON t(c3);
  CREATE INDEX tc4 ON t(c4);
  CREATE INDEX tc5 ON t(c5);
  CREATE INDEX tc6 ON t(c6);
  CREATE INDEX tc7 ON t(c7);
  CREATE INDEX tc8 ON t(c8);
  CREATE INDEX tc9 ON t(c9);
  CREATE INDEX tc10 ON t(c10);
  CREATE INDEX tc11 ON t(c11);
  CREATE INDEX tc12 ON t(c12);
  CREATE INDEX tc13 ON t(c13);
  CREATE INDEX tc14 ON t(c14);
  CREATE INDEX tc15 ON t(c15);
  CREATE INDEX tc16 ON t(c16);
  CREATE INDEX tc17 ON t(c17);
  
  INSERT INTO t(c0, c16) VALUES (1,1);
  
  SELECT * FROM t WHERE
    c0=1 or  c1=1 or  c2=1 or  c3=1 or
    c4=1 or  c5=1 or  c6=1 or  c7=1 or
    c8=1 or  c9=1 or c10=1 or c11=1 or
    c12=1 or c13=1 or c14=1 or c15=1 or
    c16=1 or c17=1;
} {1 {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} 1 {}}
do_execsql_test 5.2 {
  DELETE FROM t;
  INSERT INTO t(c0,c17) VALUES(1,1);
  SELECT * FROM t WHERE
    c0=1 or  c1=1 or  c2=1 or  c3=1 or
    c4=1 or  c5=1 or  c6=1 or  c7=1 or
    c8=1 or  c9=1 or c10=1 or c11=1 or
    c12=1 or c13=1 or c14=1 or c15=1 or
    c16=1 or c17=1;
} {1 {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} 1}
do_execsql_test 5.3 {
  DELETE FROM t;
  INSERT INTO t(c0,c15) VALUES(1,1);
  SELECT * FROM t WHERE
    c0=1 or  c1=1 or  c2=1 or  c3=1 or
    c4=1 or  c5=1 or  c6=1 or  c7=1 or
    c8=1 or  c9=1 or c10=1 or c11=1 or
    c12=1 or c13=1 or c14=1 or c15=1 or
    c16=1 or c17=1;
} {1 {} {} {} {} {} {} {} {} {} {} {} {} {} {} 1 {} {}}


finish_test
