== Summary
This task is to make the `gb_address` column in the `globalblocks` table be `VARBINARY`
== Background
- Per {T395669} and comments in this task, the `gb_address` column should have the `varbinary` type and not the `varchar` type
-- WMF wikis have the column set as `varbinary` which is correct, but the extension source code has it set as `varchar` (and so maybe other third-party wikis)
- We should make these consistent through a schema change that sets the type of `gb_address`
-- We can apply this schema change to WMF wikis to have the effect of removing the default from the column
== Proposed schema changes
=== Stage 1: Fix the type and remove default from gb_address
Change the type of the `gb_address` column to `VARBINARY(255) NOT NULL`
```lang=sql
ALTER TABLE /*_*/globalblocks
CHANGE gb_address gb_address VARBINARY(255) NOT NULL;
```
== Acceptance criteria
* [ ] The schema change is applied to the master branch of #globalblocking
* [ ] A #schema-change-in-production ticket is filed to apply the change, which should only just remove the default from gb_address