1 files changed, 117 insertions, 0 deletions
diff --git a/test/insert5.test b/test/insert5.test
new file mode 100644
index 0000000..1e58902
--- /dev/null
+++ b/test/insert5.test
@@ -0,0 +1,117 @@
+# 2007 November 23
+#
+# 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.
+#
+#***********************************************************************
+#
+# The tests in this file ensure that a temporary table is used
+# when required by an "INSERT INTO ... SELECT ..." statement.
+#
+# $Id: insert5.test,v 1.5 2008/08/04 03:51:24 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !subquery {
+  finish_test
+  return
+}
+
+# Return true if the compilation of the sql passed as an argument 
+# includes the opcode OpenEphemeral. An "INSERT INTO ... SELECT"
+# statement includes such an opcode if a temp-table is used
+# to store intermediate results.
+# 
+proc uses_temp_table {sql} {
+  return [expr {[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]>=0}]
+}
+
+# Construct the sample database.
+#
+do_test insert5-1.0 {
+  forcedelete test2.db test2.db-journal
+  execsql {
+    CREATE TABLE MAIN(Id INTEGER, Id1 INTEGER); 
+    CREATE TABLE B(Id INTEGER, Id1 INTEGER); 
+    CREATE VIEW v1 AS SELECT * FROM B;
+    CREATE VIEW v2 AS SELECT * FROM MAIN;
+    INSERT INTO MAIN(Id,Id1) VALUES(2,3); 
+    INSERT INTO B(Id,Id1) VALUES(2,3); 
+  }
+} {}
+
+# Run the query.
+#
+ifcapable compound {
+  do_test insert5-1.1 {
+    execsql {
+      INSERT INTO B 
+        SELECT * FROM B UNION ALL 
+        SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);
+      SELECT * FROM B;
+    }
+  } {2 3 2 3 2 3}
+} else {
+  do_test insert5-1.1 {
+    execsql {
+      INSERT INTO B SELECT * FROM B;
+      INSERT INTO B
+        SELECT * FROM MAIN WHERE exists (select * FROM B WHERE B.Id = MAIN.Id);
+      SELECT * FROM B;
+    }
+  } {2 3 2 3 2 3}
+}
+do_test insert5-2.1 {
+  uses_temp_table { INSERT INTO b SELECT * FROM main }
+} {0}
+do_test insert5-2.2 {
+  uses_temp_table { INSERT INTO b SELECT * FROM b }
+} {1}
+do_test insert5-2.3 {
+  uses_temp_table { INSERT INTO b SELECT (SELECT id FROM b), id1 FROM main }
+} {1}
+do_test insert5-2.4 {
+  uses_temp_table { INSERT INTO b SELECT id1, (SELECT id FROM b) FROM main }
+} {1}
+do_test insert5-2.5 {
+  uses_temp_table { 
+    INSERT INTO b 
+      SELECT * FROM main WHERE id = (SELECT id1 FROM b WHERE main.id = b.id) }
+} {1}
+do_test insert5-2.6 {
+  uses_temp_table { INSERT INTO b SELECT * FROM v1 }
+} {1}
+do_test insert5-2.7 {
+  uses_temp_table { INSERT INTO b SELECT * FROM v2 }
+} {0}
+do_test insert5-2.8 {
+  uses_temp_table { 
+    INSERT INTO b 
+    SELECT * FROM main WHERE id > 10 AND max(id1, (SELECT id FROM b)) > 10;
+  }
+} {1}
+
+# UPDATE: Using a column from the outer query (main.id) in the GROUP BY
+# or ORDER BY of a sub-query is no longer supported.
+#
+# do_test insert5-2.9 {
+#   uses_temp_table { 
+#     INSERT INTO b 
+#     SELECT * FROM main 
+#     WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)
+#   }
+# } {}
+do_test insert5-2.9 {
+  catchsql { 
+    INSERT INTO b 
+    SELECT * FROM main 
+    WHERE id > 10 AND (SELECT count(*) FROM v2 GROUP BY main.id)
+  }
+} {1 {no such column: main.id}}
+
+finish_test