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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 287af46653e7435b2d1eda10d8115dcc8a6883e2:


# 2003 July 1
#
# 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.  The
# focus of this script is testing the ATTACH and DETACH commands
# and schema changes to attached databases.
#
# $Id: attach3.test,v 1.12 2004/11/05 05:20:40 drh Exp $
#


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

# Create tables t1 and t2 in the main database
execsql {
  CREATE TABLE t1(a, b);
  CREATE TABLE t2(c, d);
}

# Create tables t1 and t2 in database file test2.db
file delete -force test2.db
file delete -force test2.db-journal
sqlite3 db2 test2.db
execsql {
  CREATE TABLE t1(a, b);
  CREATE TABLE t2(c, d);
} db2
db2 close

# Create a table in the auxilary database.
do_test attach3-1.1 {
  execsql {
    ATTACH 'test2.db' AS aux;
  }
} {}
do_test attach3-1.2 {
  execsql {
    CREATE TABLE aux.t3(e, f);
  }
} {}
do_test attach3-1.3 {
  execsql {
    SELECT * FROM sqlite_master WHERE name = 't3';
  }
} {}
do_test attach3-1.4 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 't3';
  }
} {table t3 t3 4 {CREATE TABLE t3(e, f)}}
do_test attach3-1.5 {
  execsql {
    INSERT INTO t3 VALUES(1, 2);
    SELECT * FROM t3;
  }
} {1 2}

# Create an index on the auxilary database table.
do_test attach3-2.1 {
  execsql {
    CREATE INDEX aux.i1 on t3(e);
  }
} {}
do_test attach3-2.2 {
  execsql {
    SELECT * FROM sqlite_master WHERE name = 'i1';
  }
} {}
do_test attach3-2.3 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 'i1';
  }
} {index i1 t3 5 {CREATE INDEX i1 on t3(e)}}

# Drop the index on the aux database table.
do_test attach3-3.1 {
  execsql {
    DROP INDEX aux.i1;
    SELECT * FROM aux.sqlite_master WHERE name = 'i1';
  }
} {}
do_test attach3-3.2 {
  execsql {
    CREATE INDEX aux.i1 on t3(e);
    SELECT * FROM aux.sqlite_master WHERE name = 'i1';
  }
} {index i1 t3 5 {CREATE INDEX i1 on t3(e)}}
do_test attach3-3.3 {
  execsql {
    DROP INDEX i1;
    SELECT * FROM aux.sqlite_master WHERE name = 'i1';
  }
} {}

# Drop tables t1 and t2 in the auxilary database.
do_test attach3-4.1 {
  execsql {
    DROP TABLE aux.t1;
    SELECT name FROM aux.sqlite_master;
  }
} {t2 t3}
do_test attach3-4.2 {
  # This will drop main.t2
  execsql {
    DROP TABLE t2;
    SELECT name FROM aux.sqlite_master;
  }
} {t2 t3}
do_test attach3-4.3 {
  execsql {
    DROP TABLE t2;
    SELECT name FROM aux.sqlite_master;
  }
} {t3}

# Create a view in the auxilary database.
do_test attach3-5.1 {
  execsql {
    CREATE VIEW aux.v1 AS SELECT * FROM t3;
  }
} {}
do_test attach3-5.2 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 'v1';
  }
} {view v1 v1 0 {CREATE VIEW v1 AS SELECT * FROM t3}}
do_test attach3-5.3 {
  execsql {
    INSERT INTO aux.t3 VALUES('hello', 'world');
    SELECT * FROM v1;
  }
} {1 2 hello world}

# Drop the view 
do_test attach3-6.1 {
  execsql {
    DROP VIEW aux.v1;
  }
} {}
do_test attach3-6.2 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 'v1';
  }
} {}

ifcapable {trigger} {
# Create a trigger in the auxilary database.
do_test attach3-7.1 {
  execsql {
    CREATE TRIGGER aux.tr1 AFTER INSERT ON t3 BEGIN
      INSERT INTO t3 VALUES(new.e*2, new.f*2);
    END;
  }
} {}
do_test attach3-7.2 {
  execsql {
    DELETE FROM t3;
    INSERT INTO t3 VALUES(10, 20);
    SELECT * FROM t3;
  }
} {10 20 20 40}
do_test attach3-5.3 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 'tr1';
  }
} {trigger tr1 t3 0 {CREATE TRIGGER tr1 AFTER INSERT ON t3 BEGIN
      INSERT INTO t3 VALUES(new.e*2, new.f*2);
    END}}

# Drop the trigger 
do_test attach3-8.1 {
  execsql {
    DROP TRIGGER aux.tr1;
  }
} {}
do_test attach3-8.2 {
  execsql {
    SELECT * FROM aux.sqlite_master WHERE name = 'tr1';
  }
} {}

# Try to trick SQLite into dropping the wrong temp trigger.
do_test attach3-9.0 {
  execsql {
    CREATE TABLE main.t4(a, b, c);
    CREATE TABLE aux.t4(a, b, c);
    CREATE TEMP TRIGGER tst_trigger BEFORE INSERT ON aux.t4 BEGIN 
      SELECT 'hello world';
    END;
    SELECT count(*) FROM sqlite_temp_master;
  }
} {1}
do_test attach3-9.1 {
  execsql {
    DROP TABLE main.t4;
    SELECT count(*) FROM sqlite_temp_master;
  }
} {1}
do_test attach3-9.2 {
  execsql {
    DROP TABLE aux.t4;
    SELECT count(*) FROM sqlite_temp_master;
  }
} {0}
} ;# endif trigger

# Make sure the aux.sqlite_master table is read-only
do_test attach3-10.0 {
  catchsql {
    INSERT INTO aux.sqlite_master VALUES(1, 2, 3, 4, 5);
  }
} {1 {table sqlite_master may not be modified}}

# Failure to attach leaves us in a workable state.
# Ticket #811
#
do_test attach3-11.0 {
  catchsql {
    ATTACH DATABASE '/nodir/nofile.x' AS notadb;
  }
} {1 {unable to open database: /nodir/nofile.x}}
do_test attach3-11.1 {
  catchsql {
    ATTACH DATABASE ':memory:' AS notadb;
  }
} {0 {}}
do_test attach3-11.2 {
  catchsql {
    DETACH DATABASE notadb;
  }
} {0 {}}

finish_test