When comparing index definitions, normalise the index names to lower case, as they are not case sensitive within MySQL.
Fixes#34874.
git-svn-id: https://develop.svn.wordpress.org/trunk@38591 602fd350-edb4-49c9-b593-d223f7449a82
`dbDelta()` compares the index definitions against the result of `SHOW INDEX FROM $table_name`. This requires a specific format so indices are not unnecessarily re-created. This format wasn't ensured, until now.
* Parse the raw index definition to extract the type, name and columns so a normalized definition can be built (#20263, #34873).
* Standardize on uppercase types (#34871) and on 'KEY'. 'INDEX' is only a synonym for 'KEY'.
* Escape index names with backticks (#20263).
* Normalize columns: Ignore ASC and DESC definitions (#34959), remove whitespaces (#34869) and escape column names with backticks (#20263).
* Add backticks to all index change queries (#20263).
Props ocean90, pento, kurtpayne.
Fixes#20263, #34869, #34871, #34873, #34959.
git-svn-id: https://develop.svn.wordpress.org/trunk@37583 602fd350-edb4-49c9-b593-d223f7449a82
`dbDelta()` already supported spatial fields (by virtue of not checking field types), so it's nice to round that out with spatial key support, too.
Fixes#36948.
git-svn-id: https://develop.svn.wordpress.org/trunk@37574 602fd350-edb4-49c9-b593-d223f7449a82
When upgrading to `utf8mb4`, `TEXT` fields will be upgraded to `MEDIUMTEXT` (and likewise for all other `*TEXT` and `*BLOB` fields). This is to allow for the additional space requirements of `utf8mb4`.
On the subsequent upgrade, after the `utf8mb4` upgrade, `dbDelta()` would try and downgrade the fields to their original size again. At best, this it a waste of time, at worst, this could truncate any data larger than the original size. There's no harm in leaving them at their original size, so let's do that.
Fixes#36748.
git-svn-id: https://develop.svn.wordpress.org/trunk@37525 602fd350-edb4-49c9-b593-d223f7449a82
Test to make sure that dbDelta properly inserts a value into the DB.
Props tryon, jtsternberg, ebinnion, JPry, avnarun, kevkoeh, salcode.
Fixes#29020.
git-svn-id: https://develop.svn.wordpress.org/trunk@33175 602fd350-edb4-49c9-b593-d223f7449a82
Add new tests for more parts of dbDelta. This was cleaned up and prepared for commit at #wcphilly contributor day.
Props jdgrimes, tryon, jtsternberg, ebinnion, JPry, avnarun, kevkoeh, jorbin, salcode.
Fixes#29020.
git-svn-id: https://develop.svn.wordpress.org/trunk@32770 602fd350-edb4-49c9-b593-d223f7449a82
