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+# 2001 October 7
+#
+# 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 SQLite library.
+#
+# This file implements tests for temporary tables and indices.
+#
+# $Id: temptable.test,v 1.17 2006/01/24 00:15:16 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !tempdb {
+  finish_test
+  return
+}
+
+# Create an alternative connection to the database
+#
+do_test temptable-1.0 {
+  sqlite3 db2 ./test.db
+  set dummy {}
+} {}
+
+# Create a permanent table.
+#
+do_test temptable-1.1 {
+  execsql {CREATE TABLE t1(a,b,c);}
+  execsql {INSERT INTO t1 VALUES(1,2,3);}
+  execsql {SELECT * FROM t1}
+} {1 2 3}
+do_test temptable-1.2 {
+  catch {db2 eval {SELECT * FROM sqlite_master}}
+  db2 eval {SELECT * FROM t1}
+} {1 2 3}
+do_test temptable-1.3 {
+  execsql {SELECT name FROM sqlite_master}
+} {t1}
+do_test temptable-1.4 {
+  db2 eval {SELECT name FROM sqlite_master}
+} {t1}
+
+# Create a temporary table.  Verify that only one of the two
+# processes can see it.
+#
+do_test temptable-1.5 {
+  db2 eval {
+    CREATE TEMP TABLE t2(x,y,z);
+    INSERT INTO t2 VALUES(4,5,6);
+  }
+  db2 eval {SELECT * FROM t2}
+} {4 5 6}
+do_test temptable-1.6 {
+  catch {execsql {SELECT * FROM sqlite_master}}
+  catchsql {SELECT * FROM t2}
+} {1 {no such table: t2}}
+do_test temptable-1.7 {
+  catchsql {INSERT INTO t2 VALUES(8,9,0);}
+} {1 {no such table: t2}}
+do_test temptable-1.8 {
+  db2 eval {INSERT INTO t2 VALUES(8,9,0);}
+  db2 eval {SELECT * FROM t2 ORDER BY x}
+} {4 5 6 8 9 0}
+do_test temptable-1.9 {
+  db2 eval {DELETE FROM t2 WHERE x==8}
+  db2 eval {SELECT * FROM t2 ORDER BY x}
+} {4 5 6}
+do_test temptable-1.10 {
+  db2 eval {DELETE FROM t2}
+  db2 eval {SELECT * FROM t2}
+} {}
+do_test temptable-1.11 {
+  db2 eval {
+     INSERT INTO t2 VALUES(7,6,5);
+     INSERT INTO t2 VALUES(4,3,2);
+     SELECT * FROM t2 ORDER BY x;
+  }
+} {4 3 2 7 6 5}
+do_test temptable-1.12 {
+  db2 eval {DROP TABLE t2;}
+  set r [catch {db2 eval {SELECT * FROM t2}} msg]
+  lappend r $msg
+} {1 {no such table: t2}}
+
+# Make sure temporary tables work with transactions
+#
+do_test temptable-2.1 {
+  execsql {
+    BEGIN TRANSACTION;
+    CREATE TEMPORARY TABLE t2(x,y);
+    INSERT INTO t2 VALUES(1,2);
+    SELECT * FROM t2;
+  }
+} {1 2}
+do_test temptable-2.2 {
+  execsql {ROLLBACK}
+  catchsql {SELECT * FROM t2}
+} {1 {no such table: t2}}
+do_test temptable-2.3 {
+  execsql {
+    BEGIN TRANSACTION;
+    CREATE TEMPORARY TABLE t2(x,y);
+    INSERT INTO t2 VALUES(1,2);
+    SELECT * FROM t2;
+  }
+} {1 2}
+do_test temptable-2.4 {
+  execsql {COMMIT}
+  catchsql {SELECT * FROM t2}
+} {0 {1 2}}
+do_test temptable-2.5 {
+  set r [catch {db2 eval {SELECT * FROM t2}} msg]
+  lappend r $msg
+} {1 {no such table: t2}}
+
+# Make sure indices on temporary tables are also temporary.
+#
+do_test temptable-3.1 {
+  execsql {
+    CREATE INDEX i2 ON t2(x);
+    SELECT name FROM sqlite_master WHERE type='index';
+  }
+} {}
+do_test temptable-3.2 {
+  execsql {
+    SELECT y FROM t2 WHERE x=1;
+  }
+} {2}
+do_test temptable-3.3 {
+  execsql {
+    DROP INDEX i2;
+    SELECT y FROM t2 WHERE x=1;
+  }
+} {2}
+do_test temptable-3.4 {
+  execsql {
+    CREATE INDEX i2 ON t2(x);
+    DROP TABLE t2;
+  }
+  catchsql {DROP INDEX i2}
+} {1 {no such index: i2}}
+
+# Check for correct name collision processing. A name collision can
+# occur when process A creates a temporary table T then process B
+# creates a permanent table also named T.  The temp table in process A
+# hides the existance of the permanent table.
+#
+do_test temptable-4.1 {
+  execsql {
+    CREATE TEMP TABLE t2(x,y);
+    INSERT INTO t2 VALUES(10,20);
+    SELECT * FROM t2;
+  } db2
+} {10 20}
+do_test temptable-4.2 {
+  execsql {
+    CREATE TABLE t2(x,y,z);
+    INSERT INTO t2 VALUES(9,8,7);
+    SELECT * FROM t2;
+  }
+} {9 8 7}
+do_test temptable-4.3 {
+  catchsql {
+    SELECT * FROM t2;
+  } db2
+} {0 {10 20}}
+do_test temptable-4.4.1 {
+  catchsql {
+    SELECT * FROM temp.t2;
+  } db2
+} {0 {10 20}}
+do_test temptable-4.4.2 {
+  catchsql {
+    SELECT * FROM main.t2;
+  } db2
+} {1 {no such table: main.t2}}
+#do_test temptable-4.4.3 {
+#  catchsql {
+#    SELECT name FROM main.sqlite_master WHERE type='table';
+#  } db2
+#} {1 {database schema has changed}}
+do_test temptable-4.4.4 {
+  catchsql {
+    SELECT name FROM main.sqlite_master WHERE type='table';
+  } db2
+} {0 {t1 t2}}
+do_test temptable-4.4.5 {
+  catchsql {
+    SELECT * FROM main.t2;
+  } db2
+} {0 {9 8 7}}
+do_test temptable-4.4.6 {
+  # TEMP takes precedence over MAIN
+  catchsql {
+    SELECT * FROM t2;
+  } db2
+} {0 {10 20}}
+do_test temptable-4.5 {
+  catchsql {
+    DROP TABLE t2;     -- should drop TEMP
+    SELECT * FROM t2;  -- data should be from MAIN
+  } db2
+} {0 {9 8 7}}
+do_test temptable-4.6 {
+  db2 close
+  sqlite3 db2 ./test.db
+  catchsql {
+    SELECT * FROM t2;
+  } db2
+} {0 {9 8 7}}
+do_test temptable-4.7 {
+  catchsql {
+    DROP TABLE t2;
+    SELECT * FROM t2;
+  }
+} {1 {no such table: t2}}
+do_test temptable-4.8 {
+  db2 close
+  sqlite3 db2 ./test.db
+  execsql {
+    CREATE TEMP TABLE t2(x unique,y);
+    INSERT INTO t2 VALUES(1,2);
+    SELECT * FROM t2;
+  } db2
+} {1 2}
+do_test temptable-4.9 {
+  execsql {
+    CREATE TABLE t2(x unique, y);
+    INSERT INTO t2 VALUES(3,4);
+    SELECT * FROM t2;
+  }
+} {3 4}
+do_test temptable-4.10.1 {
+  catchsql {
+    SELECT * FROM t2;
+  } db2
+} {0 {1 2}}
+# Update: The schema is reloaded in test temptable-4.10.1. And tclsqlite.c
+#         handles it and retries the query anyway.
+# do_test temptable-4.10.2 {
+#   catchsql {
+#     SELECT name FROM sqlite_master WHERE type='table'
+#   } db2
+# } {1 {database schema has changed}}
+do_test temptable-4.10.3 {
+  catchsql {
+    SELECT name FROM sqlite_master WHERE type='table'
+  } db2
+} {0 {t1 t2}}
+do_test temptable-4.11 {
+  execsql {
+    SELECT * FROM t2;
+  } db2
+} {1 2}
+do_test temptable-4.12 {
+  execsql {
+    SELECT * FROM t2;
+  }
+} {3 4}
+do_test temptable-4.13 {
+  catchsql {
+    DROP TABLE t2;     -- drops TEMP.T2
+    SELECT * FROM t2;  -- uses MAIN.T2
+  } db2
+} {0 {3 4}}
+do_test temptable-4.14 {
+  execsql {
+    SELECT * FROM t2;
+  }
+} {3 4}
+do_test temptable-4.15 {
+  db2 close
+  sqlite3 db2 ./test.db
+  execsql {
+    SELECT * FROM t2;
+  } db2
+} {3 4}
+
+# Now create a temporary table in db2 and a permanent index in db.  The
+# temporary table in db2 should mask the name of the permanent index,
+# but the permanent index should still be accessible and should still
+# be updated when its corresponding table changes.
+#
+do_test temptable-5.1 {
+  execsql {
+    CREATE TEMP TABLE mask(a,b,c)
+  } db2
+  execsql {
+    CREATE INDEX mask ON t2(x);
+    SELECT * FROM t2;
+  }
+} {3 4}
+#do_test temptable-5.2 {
+#  catchsql {
+#    SELECT * FROM t2;
+#  } db2
+#} {1 {database schema has changed}}
+do_test temptable-5.3 {
+  catchsql {
+    SELECT * FROM t2;
+  } db2
+} {0 {3 4}}
+do_test temptable-5.4 {
+  execsql {
+    SELECT y FROM t2 WHERE x=3
+  }
+} {4}
+do_test temptable-5.5 {
+  execsql {
+    SELECT y FROM t2 WHERE x=3
+  } db2
+} {4}
+do_test temptable-5.6 {
+  execsql {
+    INSERT INTO t2 VALUES(1,2);
+    SELECT y FROM t2 WHERE x=1;
+  } db2
+} {2}
+do_test temptable-5.7 {
+  execsql {
+    SELECT y FROM t2 WHERE x=3
+  } db2
+} {4}
+do_test temptable-5.8 {
+  execsql {
+    SELECT y FROM t2 WHERE x=1;
+  }
+} {2}
+do_test temptable-5.9 {
+  execsql {
+    SELECT y FROM t2 WHERE x=3
+  }
+} {4}
+
+db2 close
+
+# Test for correct operation of read-only databases
+#
+do_test temptable-6.1 {
+  execsql {
+    CREATE TABLE t8(x);
+    INSERT INTO t8 VALUES('xyzzy');
+    SELECT * FROM t8;
+  }
+} {xyzzy}
+do_test temptable-6.2 {
+  db close
+  catch {file attributes test.db -permissions 0444}
+  catch {file attributes test.db -readonly 1}
+  sqlite3 db test.db
+  if {[file writable test.db]} {
+    error "Unable to make the database file test.db readonly - rerun this test as an unprivileged user"
+  }
+  execsql {
+    SELECT * FROM t8;
+  }
+} {xyzzy}
+do_test temptable-6.3 {
+  if {[file writable test.db]} {
+    error "Unable to make the database file test.db readonly - rerun this test as an unprivileged user"
+  }
+  catchsql {
+    CREATE TABLE t9(x,y);
+  }
+} {1 {attempt to write a readonly database}}
+do_test temptable-6.4 {
+  catchsql {
+    CREATE TEMP TABLE t9(x,y);
+  }
+} {0 {}}
+do_test temptable-6.5 {
+  catchsql {
+    INSERT INTO t9 VALUES(1,2);
+    SELECT * FROM t9;
+  }
+} {0 {1 2}}
+do_test temptable-6.6 {
+  if {[file writable test.db]} {
+    error "Unable to make the database file test.db readonly - rerun this test as an unprivileged user"
+  }
+  catchsql {
+    INSERT INTO t8 VALUES('hello');
+    SELECT * FROM t8;
+  }
+} {1 {attempt to write a readonly database}}
+do_test temptable-6.7 {
+  catchsql {
+    SELECT * FROM t8,t9;
+  }
+} {0 {xyzzy 1 2}}
+do_test temptable-6.8 {
+  db close
+  sqlite3 db test.db
+  catchsql {
+    SELECT * FROM t8,t9;
+  }
+} {1 {no such table: t9}}
+
+file delete -force test2.db test2.db-journal
+do_test temptable-7.1 {
+  catchsql {
+    ATTACH 'test2.db' AS two;
+    CREATE TEMP TABLE two.abc(x,y);
+  }
+} {1 {temporary table name must be unqualified}}
+
+finish_test