gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/rowvalue6.test (about)

     1  # 2016-08-18
     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  # The focus of this file is handling of NULL values in row-value IN
    12  # expressions.
    13  #
    14  
    15  set testdir [file dirname $argv0]
    16  source $testdir/tester.tcl
    17  set ::testprefix rowvalue6
    18  
    19  do_execsql_test 1.1 {
    20    CREATE TABLE t1(a,b,c);
    21    CREATE INDEX t1x1 ON t1(a,b);
    22    INSERT INTO t1 VALUES(1,NULL,200);
    23  
    24    CREATE TABLE t2(x,y,z);
    25    INSERT INTO t2 VALUES(1,NULL,55);
    26  
    27    SELECT c FROM t1 WHERE (a,b) IN (SELECT x,y FROM t2 WHERE z==55);
    28  } {}
    29  do_execsql_test 1.2 {
    30    INSERT INTO t1 VALUES(2,3,400);
    31    INSERT INTO t2 VALUES(2,3,55);  
    32  
    33    SELECT c FROM t1 WHERE (a,b) IN (SELECT x,y FROM t2 WHERE z==55);
    34  } {400}
    35  
    36  finish_test