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

Artifact 381f494fefa90acd999933829e2934efb6b40906db9d6a39e822e3f7b4c8bf61:


# 2004 November 12
#
# 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 AUTOINCREMENT features.
#
# $Id: autoinc.test,v 1.14 2009/06/23 20:28:54 drh Exp $
#

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

# If the library is not compiled with autoincrement support then
# skip all tests in this file.
#
ifcapable {!autoinc} {
  finish_test
  return
}

if {[permutation]=="inmemory_journal"} {
  finish_test
  return
}

sqlite3_db_config_lookaside db 0 0 0

# The database is initially empty.
#
do_test autoinc-1.1 {
  execsql {
    SELECT name FROM sqlite_master WHERE type='table';
  }
} {}

# Add a table with the AUTOINCREMENT feature.  Verify that the
# SQLITE_SEQUENCE table gets created.
#
do_test autoinc-1.2 {
  execsql {
    CREATE TABLE t1(x INTEGER PRIMARY KEY AUTOINCREMENT, y);
    SELECT name FROM sqlite_master WHERE type='table';
  }
} {t1 sqlite_sequence}

# The SQLITE_SEQUENCE table is initially empty
#
do_test autoinc-1.3 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {}
do_test autoinc-1.3.1 {
  catchsql {
    CREATE INDEX seqidx ON sqlite_sequence(name)
  }
} {1 {table sqlite_sequence may not be indexed}}

# Close and reopen the database.  Verify that everything is still there.
#
do_test autoinc-1.4 {
  db close
  sqlite3 db test.db
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {}

# We are not allowed to drop the sqlite_sequence table.
#
do_test autoinc-1.5 {
  catchsql {DROP TABLE sqlite_sequence}
} {1 {table sqlite_sequence may not be dropped}}
do_test autoinc-1.6 {
  execsql {SELECT name FROM sqlite_master WHERE type='table'}
} {t1 sqlite_sequence}

# Insert an entries into the t1 table and make sure the largest key
# is always recorded in the sqlite_sequence table.
#
do_test autoinc-2.1 {
  execsql {
    SELECT * FROM sqlite_sequence
  }
} {}
do_test autoinc-2.2 {
  execsql {
    INSERT INTO t1 VALUES(12,34);
    SELECT * FROM sqlite_sequence;
  }
} {t1 12}
do_test autoinc-2.3 {
  execsql {
    INSERT INTO t1 VALUES(1,23);
    SELECT * FROM sqlite_sequence;
  }
} {t1 12}
do_test autoinc-2.4 {
  execsql {
    INSERT INTO t1 VALUES(123,456);
    SELECT * FROM sqlite_sequence;
  }
} {t1 123}
do_test autoinc-2.5 {
  execsql {
    INSERT INTO t1 VALUES(NULL,567);
    SELECT * FROM sqlite_sequence;
  }
} {t1 124}
do_test autoinc-2.6 {
  execsql {
    DELETE FROM t1 WHERE y=567;
    SELECT * FROM sqlite_sequence;
  }
} {t1 124}
do_test autoinc-2.7 {
  execsql {
    INSERT INTO t1 VALUES(NULL,567);
    SELECT * FROM sqlite_sequence;
  }
} {t1 125}
do_test autoinc-2.8 {
  execsql {
    DELETE FROM t1;
    SELECT * FROM sqlite_sequence;
  }
} {t1 125}
do_test autoinc-2.9 {
  execsql {
    INSERT INTO t1 VALUES(12,34);
    SELECT * FROM sqlite_sequence;
  }
} {t1 125}
do_test autoinc-2.10 {
  execsql {
    INSERT INTO t1 VALUES(125,456);
    SELECT * FROM sqlite_sequence;
  }
} {t1 125}
do_test autoinc-2.11 {
  execsql {
    INSERT INTO t1 VALUES(-1234567,-1);
    SELECT * FROM sqlite_sequence;
  }
} {t1 125}
do_test autoinc-2.12 {
  execsql {
    INSERT INTO t1 VALUES(234,5678);
    SELECT * FROM sqlite_sequence;
  }
} {t1 234}
do_test autoinc-2.13 {
  execsql {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(NULL,1);
    SELECT * FROM sqlite_sequence;
  }
} {t1 235}
do_test autoinc-2.14 {
  execsql {
    SELECT * FROM t1;
  }
} {235 1}

# Manually change the autoincrement values in sqlite_sequence.
#
do_test autoinc-2.20 {
  execsql {
    UPDATE sqlite_sequence SET seq=1234 WHERE name='t1';
    INSERT INTO t1 VALUES(NULL,2);
    SELECT * FROM t1;
  }
} {235 1 1235 2}
do_test autoinc-2.21 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {t1 1235}
do_test autoinc-2.22 {
  execsql {
    UPDATE sqlite_sequence SET seq=NULL WHERE name='t1';
    INSERT INTO t1 VALUES(NULL,3);
    SELECT * FROM t1;
  }
} {235 1 1235 2 1236 3}
do_test autoinc-2.23 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {t1 1236}
do_test autoinc-2.24 {
  execsql {
    UPDATE sqlite_sequence SET seq='a-string' WHERE name='t1';
    INSERT INTO t1 VALUES(NULL,4);
    SELECT * FROM t1;
  }
} {235 1 1235 2 1236 3 1237 4}
do_test autoinc-2.25 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {t1 1237}
do_test autoinc-2.26 {
  execsql {
    DELETE FROM sqlite_sequence WHERE name='t1';
    INSERT INTO t1 VALUES(NULL,5);
    SELECT * FROM t1;
  }
} {235 1 1235 2 1236 3 1237 4 1238 5}
do_test autoinc-2.27 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {t1 1238}
do_test autoinc-2.28 {
  execsql {
    UPDATE sqlite_sequence SET seq='-12345678901234567890'
      WHERE name='t1';
    INSERT INTO t1 VALUES(NULL,6);
    SELECT * FROM t1;
  }
} {235 1 1235 2 1236 3 1237 4 1238 5 1239 6}
do_test autoinc-2.29 {
  execsql {
    SELECT * FROM sqlite_sequence;
  }
} {t1 1239}

# Test multi-row inserts
#
do_test autoinc-2.50 {
  execsql {
    DELETE FROM t1 WHERE y>=3;
    INSERT INTO t1 SELECT NULL, y+2 FROM t1;
    SELECT * FROM t1;
  }
} {235 1 1235 2 1240 3 1241 4}
do_test autoinc-2.51 {
  execsql {
    SELECT * FROM sqlite_sequence
  }
} {t1 1241}

ifcapable tempdb {
  do_test autoinc-2.52 {
    execsql {
      CREATE TEMP TABLE t2 AS SELECT y FROM t1;
    }
    execsql {
      INSERT INTO t1 SELECT NULL, y+4 FROM t2;
      SELECT * FROM t1;
    }
  } {235 1 1235 2 1240 3 1241 4 1242 5 1243 6 1244 7 1245 8}
  do_test autoinc-2.53 {
    execsql {
      SELECT * FROM sqlite_sequence
    }
  } {t1 1245}
  do_test autoinc-2.54 {
    execsql {
      DELETE FROM t1;
      INSERT INTO t1 SELECT NULL, y FROM t2;
      SELECT * FROM t1;
    }
  } {1246 1 1247 2 1248 3 1249 4}
  do_test autoinc-2.55 {
    execsql {
      SELECT * FROM sqlite_sequence
    }
  } {t1 1249}
}

# Create multiple AUTOINCREMENT tables.  Make sure all sequences are
# tracked separately and do not interfere with one another.
#
do_test autoinc-2.70 {
  catchsql {
    DROP TABLE t2;
  }
  execsql {
    CREATE TABLE t2(d, e INTEGER PRIMARY KEY AUTOINCREMENT, f);
    INSERT INTO t2(d) VALUES(1);
    SELECT * FROM sqlite_sequence;
  }
} [ifcapable tempdb {list t1 1249 t2 1} else {list t1 1241 t2 1}]
do_test autoinc-2.71 {
  execsql {
    INSERT INTO t2(d) VALUES(2);
    SELECT * FROM sqlite_sequence;
  }
} [ifcapable tempdb {list t1 1249 t2 2} else {list t1 1241 t2 2}]
do_test autoinc-2.72 {
  execsql {
    INSERT INTO t1(x) VALUES(10000);
    SELECT * FROM sqlite_sequence;
  }
} {t1 10000 t2 2}
do_test autoinc-2.73 {
  execsql {
    CREATE TABLE t3(g INTEGER PRIMARY KEY AUTOINCREMENT, h);
    INSERT INTO t3(h) VALUES(1);
    SELECT * FROM sqlite_sequence;
  }
} {t1 10000 t2 2 t3 1}
do_test autoinc-2.74 {
  execsql {
    INSERT INTO t2(d,e) VALUES(3,100);
    SELECT * FROM sqlite_sequence;
  }
} {t1 10000 t2 100 t3 1}


# When a table with an AUTOINCREMENT is deleted, the corresponding entry
# in the SQLITE_SEQUENCE table should also be deleted.  But the SQLITE_SEQUENCE
# table itself should remain behind.
#
do_test autoinc-3.1 {
  execsql {SELECT name FROM sqlite_sequence}
} {t1 t2 t3}
do_test autoinc-3.2 {
  execsql {
    DROP TABLE t1;
    SELECT name FROM sqlite_sequence;
  }
} {t2 t3}
do_test autoinc-3.3 {
  execsql {
    DROP TABLE t3;
    SELECT name FROM sqlite_sequence;
  }
} {t2}
do_test autoinc-3.4 {
  execsql {
    DROP TABLE t2;
    SELECT name FROM sqlite_sequence;
  }
} {}

# AUTOINCREMENT on TEMP tables.
#
ifcapable tempdb {
  do_test autoinc-4.1 {
    execsql {
      SELECT 1, name FROM sqlite_master WHERE type='table';
      SELECT 2, name FROM temp.sqlite_master WHERE type='table';
    }
  } {1 sqlite_sequence}
  do_test autoinc-4.2 {
    execsql {
      CREATE TABLE t1(x INTEGER PRIMARY KEY AUTOINCREMENT, y);
      CREATE TEMP TABLE t3(a INTEGER PRIMARY KEY AUTOINCREMENT, b);
      SELECT 1, name FROM sqlite_master WHERE type='table';
      SELECT 2, name FROM sqlite_temp_master WHERE type='table';
    }
  } {1 sqlite_sequence 1 t1 2 t3 2 sqlite_sequence}
  do_test autoinc-4.3 {
    execsql {
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {}
  do_test autoinc-4.4 {
    execsql {
      INSERT INTO t1 VALUES(10,1);
      INSERT INTO t3 VALUES(20,2);
      INSERT INTO t1 VALUES(NULL,3);
      INSERT INTO t3 VALUES(NULL,4);
    }
  } {}
  
  ifcapable compound {
  do_test autoinc-4.4.1 {
    execsql {
      SELECT * FROM t1 UNION ALL SELECT * FROM t3;
    }
  } {10 1 11 3 20 2 21 4}
  } ;# ifcapable compound
  
  do_test autoinc-4.5 {
    execsql {
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {1 t1 11 2 t3 21}
  do_test autoinc-4.6 {
    execsql {
      INSERT INTO t1 SELECT * FROM t3;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {1 t1 21 2 t3 21}
  do_test autoinc-4.7 {
    execsql {
      INSERT INTO t3 SELECT x+100, y  FROM t1;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {1 t1 21 2 t3 121}
  do_test autoinc-4.8 {
    execsql {
      DROP TABLE t3;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {1 t1 21}
  do_test autoinc-4.9 {
    execsql {
      CREATE TEMP TABLE t2(p INTEGER PRIMARY KEY AUTOINCREMENT, q);
      INSERT INTO t2 SELECT * FROM t1;
      DROP TABLE t1;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {2 t2 21}
  do_test autoinc-4.10 {
    execsql {
      DROP TABLE t2;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
    }
  } {}
}

# Make sure AUTOINCREMENT works on ATTACH-ed tables.
#
ifcapable tempdb&&attach {
  do_test autoinc-5.1 {
    forcedelete test2.db
    forcedelete test2.db-journal
    sqlite3 db2 test2.db
    execsql {
      CREATE TABLE t4(m INTEGER PRIMARY KEY AUTOINCREMENT, n);
      CREATE TABLE t5(o, p INTEGER PRIMARY KEY AUTOINCREMENT);
    } db2;
    execsql {
      ATTACH 'test2.db' as aux;
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
      SELECT 3, * FROM aux.sqlite_sequence;
    }
  } {}
  do_test autoinc-5.2 {
    execsql {
      INSERT INTO t4 VALUES(NULL,1);
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
      SELECT 3, * FROM aux.sqlite_sequence;
    }
  } {3 t4 1}
  do_test autoinc-5.3 {
    execsql {
      INSERT INTO t5 VALUES(100,200);
      SELECT * FROM sqlite_sequence
    } db2
  } {t4 1 t5 200}
  do_test autoinc-5.4 {
    execsql {
      SELECT 1, * FROM main.sqlite_sequence;
      SELECT 2, * FROM temp.sqlite_sequence;
      SELECT 3, * FROM aux.sqlite_sequence;
    }
  } {3 t4 1 3 t5 200}
}

# Requirement REQ00310:  Make sure an insert fails if the sequence is
# already at its maximum value.
#
ifcapable {rowid32} {
  do_test autoinc-6.1 {
    execsql {
      CREATE TABLE t6(v INTEGER PRIMARY KEY AUTOINCREMENT, w);
      INSERT INTO t6 VALUES(2147483647,1);
      SELECT seq FROM main.sqlite_sequence WHERE name='t6';
    }
  } 2147483647
}
ifcapable {!rowid32} {
  do_test autoinc-6.1 {
    execsql {
      CREATE TABLE t6(v INTEGER PRIMARY KEY AUTOINCREMENT, w);
      INSERT INTO t6 VALUES(9223372036854775807,1);
      SELECT seq FROM main.sqlite_sequence WHERE name='t6';
    }
  } 9223372036854775807
}
do_test autoinc-6.2 {
  catchsql {
    INSERT INTO t6 VALUES(NULL,1);
  }
} {1 {database or disk is full}}

# Allow the AUTOINCREMENT keyword inside the parentheses
# on a separate PRIMARY KEY designation.
#
do_test autoinc-7.1 {
  execsql {
    CREATE TABLE t7(x INTEGER, y REAL, PRIMARY KEY(x AUTOINCREMENT));
    INSERT INTO t7(y) VALUES(123);
    INSERT INTO t7(y) VALUES(234);
    DELETE FROM t7;
    INSERT INTO t7(y) VALUES(345);
    SELECT * FROM t7;
  }
} {3 345.0}

# Test that if the AUTOINCREMENT is applied to a non integer primary key
# the error message is sensible.
do_test autoinc-7.2 {
  catchsql {
    CREATE TABLE t8(x TEXT PRIMARY KEY AUTOINCREMENT);
  }
} {1 {AUTOINCREMENT is only allowed on an INTEGER PRIMARY KEY}}


# Ticket #1283.  Make sure that preparing but never running a statement
# that creates the sqlite_sequence table does not mess up the database.
#
do_test autoinc-8.1 {
  catch {db2 close}
  catch {db close}
  forcedelete test.db
  sqlite3 db test.db
  set DB [sqlite3_connection_pointer db]
  set STMT [sqlite3_prepare $DB {
     CREATE TABLE t1(
       x INTEGER PRIMARY KEY AUTOINCREMENT
     )
  } -1 TAIL]
  sqlite3_finalize $STMT
  set STMT [sqlite3_prepare $DB {
     CREATE TABLE t1(
       x INTEGER PRIMARY KEY AUTOINCREMENT
     )
  } -1 TAIL]
  sqlite3_step $STMT
  sqlite3_finalize $STMT
  execsql {
    INSERT INTO t1 VALUES(NULL);
    SELECT * FROM t1;
  }
} {1}

# Ticket #3148
# Make sure the sqlite_sequence table is not damaged when doing
# an empty insert - an INSERT INTO ... SELECT ... where the SELECT
# clause returns an empty set.
#
do_test autoinc-9.1 {
  db eval {
    CREATE TABLE t2(x INTEGER PRIMARY KEY AUTOINCREMENT, y);
    INSERT INTO t2 VALUES(NULL, 1);
    CREATE TABLE t3(a INTEGER PRIMARY KEY AUTOINCREMENT, b);
    INSERT INTO t3 SELECT * FROM t2 WHERE y>1;

    SELECT * FROM sqlite_sequence WHERE name='t3';
  }
} {t3 0}

ifcapable trigger {
  catchsql { pragma recursive_triggers = off } 
  
  # Ticket #3928.  Make sure that triggers to not make extra slots in
  # the SQLITE_SEQUENCE table.
  #
  do_test autoinc-3928.1 {
    db eval {
      CREATE TABLE t3928(a INTEGER PRIMARY KEY AUTOINCREMENT, b);
      CREATE TRIGGER t3928r1 BEFORE INSERT ON t3928 BEGIN
        INSERT INTO t3928(b) VALUES('before1');
        INSERT INTO t3928(b) VALUES('before2');
      END;
      CREATE TRIGGER t3928r2 AFTER INSERT ON t3928 BEGIN
        INSERT INTO t3928(b) VALUES('after1');
        INSERT INTO t3928(b) VALUES('after2');
      END;
      INSERT INTO t3928(b) VALUES('test');
      SELECT * FROM t3928 ORDER BY a;
    }
  } {1 before1 2 after1 3 after2 4 before2 5 after1 6 after2 7 test 8 before1 9 before2 10 after1 11 before1 12 before2 13 after2}
  do_test autoinc-3928.2 {
    db eval {
      SELECT * FROM sqlite_sequence WHERE name='t3928'
    }
  } {t3928 13}

  do_test autoinc-3928.3 {
    db eval {
      DROP TRIGGER t3928r1;
      DROP TRIGGER t3928r2;
      CREATE TRIGGER t3928r3 BEFORE UPDATE ON t3928 
        WHEN typeof(new.b)=='integer' BEGIN
           INSERT INTO t3928(b) VALUES('before-int-' || new.b);
      END;
      CREATE TRIGGER t3928r4 AFTER UPDATE ON t3928 
        WHEN typeof(new.b)=='integer' BEGIN
           INSERT INTO t3928(b) VALUES('after-int-' || new.b);
      END;
      DELETE FROM t3928 WHERE a!=1;
      UPDATE t3928 SET b=456 WHERE a=1;
      SELECT * FROM t3928 ORDER BY a;
    }
  } {1 456 14 before-int-456 15 after-int-456}
  do_test autoinc-3928.4 {
    db eval {
      SELECT * FROM sqlite_sequence WHERE name='t3928'
    }
  } {t3928 15}
  
  do_test autoinc-3928.5 {
    db eval {
      CREATE TABLE t3928b(x);
      INSERT INTO t3928b VALUES(100);
      INSERT INTO t3928b VALUES(200);
      INSERT INTO t3928b VALUES(300);
      DELETE FROM t3928;
      CREATE TABLE t3928c(y INTEGER PRIMARY KEY AUTOINCREMENT, z);
      CREATE TRIGGER t3928br1 BEFORE DELETE ON t3928b BEGIN
        INSERT INTO t3928(b) VALUES('before-del-'||old.x);
        INSERT INTO t3928c(z) VALUES('before-del-'||old.x);
      END;
      CREATE TRIGGER t3928br2 AFTER DELETE ON t3928b BEGIN
        INSERT INTO t3928(b) VALUES('after-del-'||old.x);
        INSERT INTO t3928c(z) VALUES('after-del-'||old.x);
      END;
      DELETE FROM t3928b;
      SELECT * FROM t3928 ORDER BY a;
    }
  } {16 before-del-100 17 after-del-100 18 before-del-200 19 after-del-200 20 before-del-300 21 after-del-300}
  do_test autoinc-3928.6 {
    db eval {
      SELECT * FROM t3928c ORDER BY y;
    }
  } {1 before-del-100 2 after-del-100 3 before-del-200 4 after-del-200 5 before-del-300 6 after-del-300}
  do_test autoinc-3928.7 {
    db eval {
      SELECT * FROM sqlite_sequence WHERE name LIKE 't3928%' ORDER BY name;
    }
  } {t3928 21 t3928c 6}
  
  # Ticket [a696379c1f0886615541a48b35bd8181a80e88f8]
  do_test autoinc-a69637.1 {
    db eval {
      CREATE TABLE ta69637_1(x INTEGER PRIMARY KEY AUTOINCREMENT, y);
      CREATE TABLE ta69637_2(z);
      CREATE TRIGGER ra69637_1 AFTER INSERT ON ta69637_2 BEGIN
        INSERT INTO ta69637_1(y) VALUES(new.z+1);
      END;
      INSERT INTO ta69637_2 VALUES(123);
      SELECT * FROM ta69637_1;
    }
  } {1 124}
  do_test autoinc-a69637.2 {
    db eval {
      CREATE VIEW va69637_2 AS SELECT * FROM ta69637_2;
      CREATE TRIGGER ra69637_2 INSTEAD OF INSERT ON va69637_2 BEGIN
        INSERT INTO ta69637_1(y) VALUES(new.z+10000);
      END;
      INSERT INTO va69637_2 VALUES(123);
      SELECT * FROM ta69637_1;
    }
  } {1 124 2 10123}
}

# 2016-10-03 ticket https://www.sqlite.org/src/tktview/7b3328086a5c1
# Make sure autoincrement plays nicely with the xfer optimization
#
do_execsql_test autoinc-10.1 {
  DELETE FROM sqlite_sequence;
  CREATE TABLE t10a(a INTEGER PRIMARY KEY AUTOINCREMENT, b UNIQUE);
  INSERT INTO t10a VALUES(888,9999);
  CREATE TABLE t10b(x INTEGER PRIMARY KEY AUTOINCREMENT, y UNIQUE);
  INSERT INTO t10b SELECT * FROM t10a;
  SELECT * FROM sqlite_sequence;
} {t10a 888 t10b 888}

# 2018-04-21 autoincrement does not cause problems for upsert
#
do_execsql_test autoinc-11.1 {
  CREATE TABLE t11(a INTEGER PRIMARY KEY AUTOINCREMENT,b UNIQUE);
  INSERT INTO t11(a,b) VALUES(2,3),(5,6),(4,3),(1,2)
    ON CONFLICT(b) DO UPDATE SET a=a+1000;
  SELECT seq FROM sqlite_sequence WHERE name='t11';
} {5}

# 2018-05-23 ticket d8dc2b3a58cd5dc2918a1d4acbba4676a23ada4c
# Does not crash if the sqlite_sequence table schema is missing
# or corrupt.
#
do_test autoinc-12.1 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE fake_sequence(name TEXT PRIMARY KEY,seq) WITHOUT ROWID;
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
     sql=replace(sql,'fake_','sqlite_'),
     name='sqlite_sequence',
     tbl_name='sqlite_sequence'
     WHERE name='fake_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
do_test autoinc-12.2 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
   INSERT INTO t1(b) VALUES('one');
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET
     sql=replace(sql,'sqlite_','x_'),
     name='x_sequence',
     tbl_name='x_sequence'
    WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
ifcapable vtab {
  set err "database disk image is malformed"
} else {
  set err {malformed database schema (sqlite_sequence) - near "VIRTUAL": syntax error}
}
do_test autoinc-12.3 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
   INSERT INTO t1(b) VALUES('one');
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET
     sql='CREATE VIRTUAL TABLE sqlite_sequence USING sqlite_dbpage'
    WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} [list 1 $err]
do_test autoinc-12.4 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    CREATE TABLE fake(name TEXT PRIMARY KEY,seq) WITHOUT ROWID;
  }
  set root1 [db one {SELECT rootpage FROM sqlite_master
                     WHERE name='sqlite_sequence'}]
  set root2 [db one {SELECT rootpage FROM sqlite_master
                     WHERE name='fake'}]
  sqlite3_db_config db DEFENSIVE 0
  db eval {
   PRAGMA writable_schema=on;
   UPDATE sqlite_master SET rootpage=$root2
    WHERE name='sqlite_sequence';
   UPDATE sqlite_master SET rootpage=$root1
    WHERE name='fake';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
breakpoint
do_test autoinc-12.5 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(x)'
      WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two');
  }} msg]
  lappend res $msg
} {1 {database disk image is malformed}}
do_test autoinc-12.6 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(x,y INTEGER PRIMARY KEY)'
      WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two'),('three'),('four');
    INSERT INTO t1(b) VALUES('five');
    PRAGMA integrity_check;
  }} msg]
  lappend res $msg
} {0 ok}
do_test autoinc-12.7 {
  db close
  forcedelete test.db
  sqlite3 db test.db
  sqlite3_db_config db DEFENSIVE 0
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY AUTOINCREMENT, b TEXT);
    INSERT INTO t1(b) VALUES('one');
    PRAGMA writable_schema=on;
    UPDATE sqlite_master SET
       sql='CREATE TABLE sqlite_sequence(y INTEGER PRIMARY KEY,x)'
      WHERE name='sqlite_sequence';
  }
  db close
  sqlite3 db test.db
  set res [catch {db eval {
    INSERT INTO t1(b) VALUES('two'),('three'),('four');
    INSERT INTO t1(b) VALUES('five');
    PRAGMA integrity_check;
  }} msg]
  lappend res $msg
} {0 ok}

finish_test