test/selectD.test

# 2012 December 19
#
# 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 name resolution in SELECT
# statements that have parenthesized FROM clauses.
#

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


for {set i 1} {$i<=2} {incr i} {
  db close
  forcedelete test$i.db
  sqlite3 db test$i.db
  if {$i==2} {
    optimization_control db query-flattener off
  }
  do_test selectD-$i.0 {
    db eval {
      ATTACH ':memory:' AS aux1;
      CREATE TABLE t1(a,b); INSERT INTO t1 VALUES(111,'x1');
      CREATE TABLE t2(a,b); INSERT INTO t2 VALUES(222,'x2');
      CREATE TEMP TABLE t3(a,b); INSERT INTO t3 VALUES(333,'x3');
      CREATE TABLE main.t4(a,b); INSERT INTO main.t4 VALUES(444,'x4');
      CREATE TABLE aux1.t4(a,b); INSERT INTO aux1.t4 VALUES(555,'x5');
    }
  } {}
  do_test selectD-$i.1 {
    db eval {
      SELECT *
        FROM (t1), (t2), (t3), (t4)
       WHERE t4.a=t3.a+111 
         AND t3.a=t2.a+111
         AND t2.a=t1.a+111;
    }
  } {111 x1 222 x2 333 x3 444 x4}
  do_test selectD-$i.2.1 {
    db eval {
      SELECT *
        FROM t1 JOIN (t2 JOIN (t3 JOIN t4 ON t4.a=t3.a+111)
                              ON t3.a=t2.a+111)
                     ON t2.a=t1.a+111;
    }
  } {111 x1 222 x2 333 x3 444 x4}
  do_test selectD-$i.2.2 {
    db eval {
      SELECT t3.a
        FROM t1 JOIN (t2 JOIN (t3 JOIN t4 ON t4.a=t3.a+111)
                              ON t3.a=t2.a+111)
                     ON t2.a=t1.a+111;
    }
  } {333}
  do_test selectD-$i.2.3 {
    db eval {
      SELECT t3.*
        FROM t1 JOIN (t2 JOIN (t3 JOIN t4 ON t4.a=t3.a+111)
                              ON t3.a=t2.a+111)
                     ON t2.a=t1.a+111;
    }
  } {333 x3}
  do_test selectD-$i.2.3 {
    db eval {
      SELECT t3.*, t2.*
        FROM t1 JOIN (t2 JOIN (t3 JOIN t4 ON t4.a=t3.a+111)
                              ON t3.a=t2.a+111)
                     ON t2.a=t1.a+111;
    }
  } {333 x3 222 x2}
  do_test selectD-$i.2.4 {
    db eval {
      SELECT *
        FROM t1 JOIN (t2 JOIN (main.t4 JOIN aux1.t4 ON aux1.t4.a=main.t4.a+111)
                              ON main.t4.a=t2.a+222)
                     ON t2.a=t1.a+111;
    }
  } {111 x1 222 x2 444 x4 555 x5}
  do_test selectD-$i.2.5 {
    db eval {
      SELECT *
        FROM t1 JOIN (t2 JOIN (main.t4 AS x JOIN aux1.t4 ON aux1.t4.a=x.a+111)
                              ON x.a=t2.a+222)
                     ON t2.a=t1.a+111;
    }
  } {111 x1 222 x2 444 x4 555 x5}
  do_test selectD-$i.2.6 {
    catchsql {
      SELECT *
        FROM t1 JOIN (t2 JOIN (main.t4 JOIN aux.t4 ON aux.t4.a=main.t4.a+111)
                              ON main.t4.a=t2.a+222)
                     ON t2.a=t1.a+111;
    }
  } {1 {no such table: aux.t4}}
  do_test selectD-$i.2.7 {
    db eval {
      SELECT x.a, y.b
        FROM t1 JOIN (t2 JOIN (main.t4 x JOIN aux1.t4 y ON y.a=x.a+111)
                              ON x.a=t2.a+222)
                     ON t2.a=t1.a+111;
    }
  } {444 x5}
  do_test selectD-$i.3 {
    db eval {
      UPDATE t2 SET a=111;
      UPDATE t3 SET a=111;
      UPDATE t4 SET a=111;
      SELECT *
        FROM t1 JOIN (t2 JOIN (t3 JOIN t4 USING(a)) USING (a)) USING (a);
    }
  } {111 x1 x2 x3 x4}
  do_test selectD-$i.4 {
    db eval {
      UPDATE t2 SET a=111;
      UPDATE t3 SET a=111;
      UPDATE t4 SET a=111;
      SELECT *
        FROM t1 LEFT JOIN (t2 LEFT JOIN (t3 LEFT JOIN t4 USING(a))
                                        USING (a))
                           USING (a);
    }
  } {111 x1 x2 x3 x4}
  do_test selectD-$i.5 {
    db eval {
      UPDATE t3 SET a=222;
      UPDATE t4 SET a=222;
      SELECT *
        FROM (t1 LEFT JOIN t2 USING(a)) JOIN (t3 LEFT JOIN t4 USING(a))
             ON t1.a=t3.a-111;
    }
  } {111 x1 x2 222 x3 x4}
  do_test selectD-$i.6 {
    db eval {
      UPDATE t4 SET a=333;
      SELECT *
        FROM (t1 LEFT JOIN t2 USING(a)) JOIN (t3 LEFT JOIN t4 USING(a))
             ON t1.a=t3.a-111;
    }
  } {111 x1 x2 222 x3 {}}
  do_test selectD-$i.7 {
    db eval {
      SELECT t1.*, t2.*, t3.*, t4.b
        FROM (t1 LEFT JOIN t2 USING(a)) JOIN (t3 LEFT JOIN t4 USING(a))
             ON t1.a=t3.a-111;
    }
  } {111 x1 111 x2 222 x3 {}}
}

# The following test was added on 2013-04-24 in order to verify that
# the datatypes and affinities of sub-sub-queries are set prior to computing
# the datatypes and affinities of the parent sub-queries because the 
# latter computation depends on the former.
#
do_execsql_test selectD-4.1 {
  CREATE TABLE t41(a INTEGER PRIMARY KEY, b INTEGER);
  CREATE TABLE t42(d INTEGER PRIMARY KEY, e INTEGER);
  CREATE TABLE t43(f INTEGER PRIMARY KEY, g INTEGER);
  EXPLAIN QUERY PLAN
  SELECT * 
   FROM t41
   LEFT JOIN (SELECT count(*) AS cnt, x1.d
                FROM (t42 INNER JOIN t43 ON d=g) AS x1
               WHERE x1.d>5
               GROUP BY x1.d) AS x2
                  ON t41.b=x2.d;
} {/*SEARCH SUBQUERY * AS x2 USING AUTOMATIC*/}

finish_test