AryaWu/sqlite

1# 2007 November 232#3# The author disclaims copyright to this source code.  In place of4# 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# The tests in this file ensure that a temporary table is used13# when required by an "INSERT INTO ... SELECT ..." statement.14#15# $Id: insert5.test,v 1.5 2008/08/04 03:51:24 danielk1977 Exp $16 17set testdir [file dirname $argv0]18source $testdir/tester.tcl19 20ifcapable !subquery {21  finish_test22  return23}24 25# Return true if the compilation of the sql passed as an argument 26# includes the opcode OpenEphemeral. An "INSERT INTO ... SELECT"27# statement includes such an opcode if a temp-table is used28# to store intermediate results.29# 30proc uses_temp_table {sql} {31  return [expr {[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]>=0}]32}33 34# Construct the sample database.35#36do_test insert5-1.0 {37  forcedelete test2.db test2.db-journal38  execsql {39    CREATE TABLE MAIN(Id INTEGER, Id1 INTEGER); 40    CREATE TABLE B(Id INTEGER, Id1 INTEGER); 41    CREATE VIEW v1 AS SELECT * FROM B;42    CREATE VIEW v2 AS SELECT * FROM MAIN;43    INSERT INTO MAIN(Id,Id1) VALUES(2,3); 44    INSERT INTO B(Id,Id1) VALUES(2,3); 45  }46} {}47 48# Run the query.49#50ifcapable compound {51  do_test insert5-1.1 {52    execsql {53      INSERT INTO B 54        SELECT * FROM B UNION ALL 55        SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);56      SELECT * FROM B;57    }58  } {2 3 2 3 2 3}59} else {60  do_test insert5-1.1 {61    execsql {62      INSERT INTO B SELECT * FROM B;63      INSERT INTO B64        SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);65      SELECT * FROM B;66    }67  } {2 3 2 3 2 3}68}69do_test insert5-2.1 {70  uses_temp_table { INSERT INTO b SELECT * FROM main }71} {0}72do_test insert5-2.2 {73  uses_temp_table { INSERT INTO b SELECT * FROM b }74} {1}75do_test insert5-2.3 {76  uses_temp_table { INSERT INTO b SELECT (SELECT id FROM b), id1 FROM main }77} {1}78do_test insert5-2.4 {79  uses_temp_table { INSERT INTO b SELECT id1, (SELECT id FROM b) FROM main }80} {1}81do_test insert5-2.5 {82  uses_temp_table { 83    INSERT INTO b 84      SELECT * FROM main WHERE id = (SELECT id1 FROM b WHERE main.id = b.id) }85} {1}86do_test insert5-2.6 {87  uses_temp_table { INSERT INTO b SELECT * FROM v1 }88} {1}89do_test insert5-2.7 {90  uses_temp_table { INSERT INTO b SELECT * FROM v2 }91} {0}92do_test insert5-2.8 {93  uses_temp_table { 94    INSERT INTO b 95    SELECT * FROM main WHERE id > 10 AND max(id1, (SELECT id FROM b)) > 10;96  }97} {1}98 99# UPDATE: Using a column from the outer query (main.id) in the GROUP BY100# or ORDER BY of a sub-query is no longer supported.101#102# do_test insert5-2.9 {103#   uses_temp_table { 104#     INSERT INTO b 105#     SELECT * FROM main 106#     WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)107#   }108# } {}109do_test insert5-2.9 {110  catchsql { 111    INSERT INTO b 112    SELECT * FROM main 113    WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)114  }115} {1 {no such column: main.id}}116 117finish_test118