Add unsigned integer support to MySQL. Unsigned integers have not been
added to other databases as they either do not support them (postgres,
sqlserver) or they are 'faked' and don't do anything (sqlite).
Fixes#2321
- add `types` parameter and strict check if it present in `$fieldParameters` (if it present and not contain column type field parameter will be skipped)
- add `noVal` parameter to `$fieldParameters` if it present and not empty value of this parameter from column will be ignored
- add `unsigned` column type for integer, float and biginteger. If it set to `true` an 'UNSIGNED' will be add in sql column part, if not set or set not to `true` this parameter will be skipped
This statement does not serve a purpose anymore.
In a long forgotten world it indicated the main version number of PHP which the code in the file was compatible to.
http://pear.php.net/manual/en/standards.sample.php
But since PHP 5.1 and later this is only marginally true.
Thus I propose to remove it from CakePHP.
Add into the tower of hacks that is the SQL generation and stop breaking
COUNT(DISTINCT foo) style queries. Previously these would be converted
into DISTINCT COUNT(foo) which will give the non-distinct results.
The value function quoted a null value as N'' instead of NULL.
As a result is produced queries like [name] IS N'' instead of [name] IS NULL which resulted in an SQL error.
generate bigint primary keys correctly. Autoincrement cannot be set as
it only works with INTEGER columns[1]. I decided to use some string
manipulations as the entire SQL generation bits are a bit janky and I've
already re-written them for 3.0.
[1] https://www.sqlite.org/autoinc.html
Closes #GH-1552
`sqlite_sequence` is a dynamic table that's only available when a table in
the database use an auto increment field. For some cases, eg: databases that
exclusively use uuid for primary keys, this table won't exist and
truncate() call will fail with:
Error: SQLSTATE[HY000]: General error: 1 no such table: sqlite_sequence
