gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/tkt3346.test (about)

     1  # 2008 September 1
     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  #
    12  # This file implements regression tests for SQLite library.  The
    13  # focus of this file is testing the fix for ticket #3346
    14  #
    15  # $Id: tkt3346.test,v 1.3 2008/12/09 13:12:57 drh Exp $
    16  
    17  set testdir [file dirname $argv0]
    18  source $testdir/tester.tcl
    19  
    20  do_test tkt3346-1.1 {
    21    db eval {
    22     CREATE TABLE t1(a,b);
    23     INSERT INTO t1 VALUES(2,'bob');
    24     INSERT INTO t1 VALUES(1,'alice');
    25     INSERT INTO t1 VALUES(3,'claire');
    26     SELECT *, ( SELECT y FROM (SELECT x.b='alice' AS y) )
    27       FROM ( SELECT * FROM t1 ) AS x;
    28    }
    29  } {2 bob 0 1 alice 1 3 claire 0}
    30  do_test tkt3346-1.2 {
    31    db eval {
    32      SELECT b FROM (SELECT * FROM t1) AS x
    33       WHERE (SELECT y FROM (SELECT x.b='alice' AS y))=0
    34    }
    35  } {bob claire}
    36  do_test tkt3346-1.3 {
    37    db eval {
    38      SELECT b FROM (SELECT * FROM t1 ORDER BY a) AS x
    39       WHERE (SELECT y FROM (SELECT a||b y FROM t1 WHERE t1.b=x.b))=(x.a||x.b)
    40    }
    41  } {alice bob claire}
    42  do_test tkt3346-1.4 {
    43    db eval {
    44      SELECT b FROM (SELECT * FROM t1 ORDER BY a) AS x
    45       WHERE (SELECT y FROM (SELECT a||b y FROM t1 WHERE t1.b=x.b))=('2'||x.b)
    46    }
    47  } {bob}
    48  
    49  # Ticket #3530
    50  #
    51  # As shown by ticket #3346 above (see also ticket #3298) it is important
    52  # that a subquery in the result-set be able to look up through multiple
    53  # FROM levels in order to view tables in the FROM clause at the top level.
    54  #
    55  # But ticket #3530 shows us that a subquery in the FROM clause should not
    56  # be able to look up to higher levels:
    57  #
    58  do_test tkt3346-2.1 {
    59    catchsql {
    60      CREATE TABLE t2(a);
    61      INSERT INTO t2 VALUES(1);
    62      
    63      SELECT * FROM (SELECT * FROM t1 WHERE 1=x.a) AS x;
    64    }
    65  } {1 {no such column: x.a}}
    66  
    67  finish_test