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Comment:Change a comment in sqlite3ota.h to make it clear that it is not possible to insert a NULL value into an INTEGER PRIMARY KEY column using ota.
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SHA1:a5e86bea4ad51bbb988a2a2215961706894f4a02
User & Date: dan 2015-02-05 17:46:19
Context
2015-02-06
00:31
Revise the way that the index structure for a WITHOUT ROWID table is discovered. check-in: 7f10a0ea user: drh tags: ota-update
2015-02-05
17:46
Change a comment in sqlite3ota.h to make it clear that it is not possible to insert a NULL value into an INTEGER PRIMARY KEY column using ota. check-in: a5e86bea user: dan tags: ota-update
17:36
Prevent ota updates from violating NOT NULL constraints. Add a comment to the "limitations" section of sqlite3ota.h saying that CHECK constraints are not enforced. check-in: 74e073dd user: dan tags: ota-update
Changes
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Changes to ext/ota/ota10.test. 

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  CREATE TABLE t2(a INTEGER NOT NULL, b TEXT NOT NULL, c PRIMARY KEY);
  CREATE TABLE t3(a INTEGER NOT NULL, b TEXT NOT NULL, c INTEGER PRIMARY KEY);
  CREATE TABLE t4(a, b, PRIMARY KEY(a, b)) WITHOUT ROWID;

  INSERT INTO t2 VALUES(10, 10, 10);
  INSERT INTO t3 VALUES(10, 10, 10);
  INSERT INTO t4 VALUES(10, 10);

}

foreach {tn error ota} {
  2 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.a} {
    INSERT INTO data_t2 VALUES(NULL, 'abc', 1, 0);
  }
  3 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.b} {
    INSERT INTO data_t2 VALUES(2, NULL, 1, 0);
  }
  4 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.c} {
    INSERT INTO data_t2 VALUES(1, 'abc', NULL, 0);
  }

  5 {SQLITE_MISMATCH - datatype mismatch} {
    INSERT INTO data_t3 VALUES(1, 'abc', NULL, 0);
  }

  6 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t4.b} {
    INSERT INTO data_t4 VALUES('a', NULL, 0);
  }
  7 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t4.a} {
    INSERT INTO data_t4 VALUES(NULL, 'a', 0);
  }
  8  {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.a} {
    INSERT INTO data_t2 VALUES(NULL, 0, 10, 'x..');
  }
  9  {SQLITE_CONSTRAINT - NOT NULL constraint failed: t3.b} {
    INSERT INTO data_t3 VALUES(10, NULL, 10, '.x.');
  }




} {
  set ota "
    CREATE TABLE data_t2(a, b, c, ota_control);
    CREATE TABLE data_t3(a, b, c, ota_control);
    CREATE TABLE data_t4(a, b, ota_control);
    $ota
  "
  do_test 4.$tn {
    list [catch { apply_ota $ota } msg] $msg
  } [list 1 $error]
}











finish_test









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  CREATE TABLE t2(a INTEGER NOT NULL, b TEXT NOT NULL, c PRIMARY KEY);
  CREATE TABLE t3(a INTEGER NOT NULL, b TEXT NOT NULL, c INTEGER PRIMARY KEY);
  CREATE TABLE t4(a, b, PRIMARY KEY(a, b)) WITHOUT ROWID;

  INSERT INTO t2 VALUES(10, 10, 10);
  INSERT INTO t3 VALUES(10, 10, 10);
  INSERT INTO t4 VALUES(10, 10);

}

foreach {tn error ota} {
  2 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.a} {
    INSERT INTO data_t2 VALUES(NULL, 'abc', 1, 0);
  }
  3 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.b} {
    INSERT INTO data_t2 VALUES(2, NULL, 1, 0);
  }
  4 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.c} {
    INSERT INTO data_t2 VALUES(1, 'abc', NULL, 0);
  }

  5 {SQLITE_MISMATCH - datatype mismatch} {
    INSERT INTO data_t3 VALUES(1, 'abc', NULL, 0);
  }

  6 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t4.b} {
    INSERT INTO data_t4 VALUES('a', NULL, 0);
  }
  7 {SQLITE_CONSTRAINT - NOT NULL constraint failed: t4.a} {
    INSERT INTO data_t4 VALUES(NULL, 'a', 0);
  }
  8  {SQLITE_CONSTRAINT - NOT NULL constraint failed: t2.a} {
    INSERT INTO data_t2 VALUES(NULL, 0, 10, 'x..');
  }
  9  {SQLITE_CONSTRAINT - NOT NULL constraint failed: t3.b} {
    INSERT INTO data_t3 VALUES(10, NULL, 10, '.x.');
  }

  10 {SQLITE_MISMATCH - datatype mismatch} {
    INSERT INTO data_t3 VALUES(1, 'abc', 'text', 0);
  }
} {
  set ota "
    CREATE TABLE data_t2(a, b, c, ota_control);
    CREATE TABLE data_t3(a, b, c, ota_control);
    CREATE TABLE data_t4(a, b, ota_control);
    $ota
  "
  do_test 4.2.$tn {
    list [catch { apply_ota $ota } msg] $msg
  } [list 1 $error]
}

do_test 4.3 {
  set ota {
    CREATE TABLE data_t3(a, b, c, ota_control);
    INSERT INTO data_t3 VALUES(1, 'abc', '5', 0);
    INSERT INTO data_t3 VALUES(1, 'abc', '-6.0', 0);
  }
  list [catch { apply_ota $ota } msg] $msg
} {0 SQLITE_DONE}


finish_test

Changes to ext/ota/sqlite3ota.h. 

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**
** For each row to INSERT into the target database as part of the OTA 
** update, the corresponding data_% table should contain a single record
** with the "ota_control" column set to contain integer value 0. The
** other columns should be set to the values that make up the new record 
** to insert. 
**
** If the target database table has an INTEGER PRIMARY KEY and there are
** one or more auxiliary indexes, it is not possible to insert a NULL value
** into the IPK column. Attempting to do so results in an SQLITE_MISMATCH
** error.
**
** For each row to DELETE from the target database as part of the OTA 
** update, the corresponding data_% table should contain a single record
** with the "ota_control" column set to contain integer value 1. The
** real primary key values of the row to delete should be stored in the
** corresponding columns of the data_% table. The values stored in the
** other columns are not used.








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**
** For each row to INSERT into the target database as part of the OTA 
** update, the corresponding data_% table should contain a single record
** with the "ota_control" column set to contain integer value 0. The
** other columns should be set to the values that make up the new record 
** to insert. 
**
** If the target database table has an INTEGER PRIMARY KEY, it is not 
** possible to insert a NULL value into the IPK column. Attempting to 
** do so results in an SQLITE_MISMATCH error.

**
** For each row to DELETE from the target database as part of the OTA 
** update, the corresponding data_% table should contain a single record
** with the "ota_control" column set to contain integer value 1. The
** real primary key values of the row to delete should be stored in the
** corresponding columns of the data_% table. The values stored in the
** other columns are not used.

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