Add interface wrapper for CREATE IF NOT EXISTS

[SchaichAlonso]

There is dropIfExists for tables but there is no wrapper for CREATE TABLE IF NOT EXISTS.

Likewise, the querybuilder doesn't interface CREATE INDEX IF NOT EXISTS .

[silverqx]

I will not add this at sure.

Currently, there is Schema::hasTable().

For indexes, I will not add something like indexIfNotExists() or fullTextIfNotExists() why would you do that in migrations? The current API for indexes is here, which I think is good enough for now.

I understand why you want it, in testing things around it can make sense for you, but if you look at it from the perspective of creating migrations then there is no reason for that. Why would you call indexIfNotExists() in migrations up/down?

[SchaichAlonso]

For being consistently ... lazy.

No way being lazy with 72920 LoC and 4190 commits 😎🔥

If there's no legitimate use case for CREATE IF NOT EXISTS, then there is no legitimate use case for DROP IF EXISTS either, yet drop has a wrapper, and create does not.

This is not true, I worked on a few bigger projects (~50 migration classes), and believe me, you will need dropIfNotExists() in the first down migration but will never need indexCreateIfNotExists() because you must always drop things (tables, columns, indexes) if you are migrating down and they are already dropped if you are migrating up again.

You can still write your DDL query manually using the DB::statement() or DB::unprepared() if you need more specialized SQL query even in the migration classes.

Not every SQL statement needs to have a query/schema builder wrapper.

But we can leave this open it can be implemented in the future especially createIfNotExists() for tables.