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sqlite3

    1: # 2005 September 19
    2: #
    3: # The author disclaims copyright to this source code.  In place of
    4: # a legal notice, here is a blessing:
    5: #
    6: #    May you do good and not evil.
    7: #    May you find forgiveness for yourself and forgive others.
    8: #    May you share freely, never taking more than you give.
    9: #
   10: #***********************************************************************
   11: # This file implements regression tests for SQLite library.
   12: #
   13: # This file implements tests for left outer joins containing ON
   14: # clauses that restrict the scope of the left term of the join.
   15: #
   16: # $Id: join5.test,v 1.1.1.1 2012/02/21 17:04:16 misho Exp $
   17: 
   18: set testdir [file dirname $argv0]
   19: source $testdir/tester.tcl
   20: 
   21: 
   22: do_test join5-1.1 {
   23:   execsql {
   24:     BEGIN;
   25:     CREATE TABLE t1(a integer primary key, b integer, c integer);
   26:     CREATE TABLE t2(x integer primary key, y);
   27:     CREATE TABLE t3(p integer primary key, q);
   28:     INSERT INTO t3 VALUES(11,'t3-11');
   29:     INSERT INTO t3 VALUES(12,'t3-12');
   30:     INSERT INTO t2 VALUES(11,'t2-11');
   31:     INSERT INTO t2 VALUES(12,'t2-12');
   32:     INSERT INTO t1 VALUES(1, 5, 0);
   33:     INSERT INTO t1 VALUES(2, 11, 2);
   34:     INSERT INTO t1 VALUES(3, 12, 1);
   35:     COMMIT;
   36:   }
   37: } {}
   38: do_test join5-1.2 {
   39:   execsql {
   40:     select * from t1 left join t2 on t1.b=t2.x and t1.c=1
   41:   }
   42: } {1 5 0 {} {} 2 11 2 {} {} 3 12 1 12 t2-12}
   43: do_test join5-1.3 {
   44:   execsql {
   45:     select * from t1 left join t2 on t1.b=t2.x where t1.c=1
   46:   }
   47: } {3 12 1 12 t2-12}
   48: do_test join5-1.4 {
   49:   execsql {
   50:     select * from t1 left join t2 on t1.b=t2.x and t1.c=1
   51:                      left join t3 on t1.b=t3.p and t1.c=2
   52:   }
   53: } {1 5 0 {} {} {} {} 2 11 2 {} {} 11 t3-11 3 12 1 12 t2-12 {} {}}
   54: do_test join5-1.5 {
   55:   execsql {
   56:     select * from t1 left join t2 on t1.b=t2.x and t1.c=1
   57:                      left join t3 on t1.b=t3.p where t1.c=2
   58:   }
   59: } {2 11 2 {} {} 11 t3-11}
   60: 
   61: # Ticket #2403
   62: #
   63: do_test join5-2.1 {
   64:   execsql {
   65:     CREATE TABLE ab(a,b);
   66:     INSERT INTO "ab" VALUES(1,2);
   67:     INSERT INTO "ab" VALUES(3,NULL);
   68: 
   69:     CREATE TABLE xy(x,y);
   70:     INSERT INTO "xy" VALUES(2,3);
   71:     INSERT INTO "xy" VALUES(NULL,1);
   72:   }
   73:   execsql {SELECT * FROM xy LEFT JOIN ab ON 0}
   74: } {2 3 {} {} {} 1 {} {}}
   75: do_test join5-2.2 {
   76:   execsql {SELECT * FROM xy LEFT JOIN ab ON 1}
   77: } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
   78: do_test join5-2.3 {
   79:   execsql {SELECT * FROM xy LEFT JOIN ab ON NULL}
   80: } {2 3 {} {} {} 1 {} {}}
   81: do_test join5-2.4 {
   82:   execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 0}
   83: } {}
   84: do_test join5-2.5 {
   85:   execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 0}
   86: } {}
   87: do_test join5-2.6 {
   88:   execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 0}
   89: } {}
   90: do_test join5-2.7 {
   91:   execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 1}
   92: } {2 3 {} {} {} 1 {} {}}
   93: do_test join5-2.8 {
   94:   execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 1}
   95: } {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
   96: do_test join5-2.9 {
   97:   execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 1}
   98: } {2 3 {} {} {} 1 {} {}}
   99: do_test join5-2.10 {
  100:   execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL}
  101: } {}
  102: do_test join5-2.11 {
  103:   execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL}
  104: } {}
  105: do_test join5-2.12 {
  106:   execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL}
  107: } {}
  108: 
  109: 
  110: finish_test