New Features

🎉 Full support for indexes in PostgreSQL

The previous Drizzle+PostgreSQL indexes API was incorrect and was not aligned with the PostgreSQL documentation. The good thing is that it was not used in queries, and drizzle-kit didn't support all properties for indexes. This means we can now change the API to the correct one and provide full support for it in drizzle-kit

Previous API

• No way to define SQL expressions inside .on.
• .using and .on in our case are the same thing, so the API is incorrect here.
• .asc(), .desc(), .nullsFirst(), and .nullsLast() should be specified for each column or expression on indexes, but not on an index itself.

// Index declaration reference
index('name')
  .on(table.column1, table.column2, ...) or .onOnly(table.column1, table.column2, ...)
  .concurrently()
  .using(sql``) // sql expression
  .asc() or .desc()
  .nullsFirst() or .nullsLast()
  .where(sql``) // sql expression

Current API

// First example, with `.on()`
index('name')
  .on(table.column1.asc(), table.column2.nullsFirst(), ...) or .onOnly(table.column1.desc().nullsLast(), table.column2, ...)
  .concurrently()
  .where(sql``)
  .with({ fillfactor: '70' })

// Second Example, with `.using()`
index('name')
  .using('btree', table.column1.asc(), sql`lower(${table.column2})`, table.column1.op('text_ops'))
  .where(sql``) // sql expression
  .with({ fillfactor: '70' })

How push and generate works for indexes

Limitations

You should specify a name for your index manually if you have an index on at least one expression

Example

index().on(table.id, table.email) // will work well and name will be autogeneretaed
index('my_name').on(table.id, table.email) // will work well

// but

index().on(sql`lower(${table.email})`) // error
index('my_name').on(sql`lower(${table.email})`) // will work well

Push won't generate statements if these fields(list below) were changed in an existing index:

• expressions inside .on() and .using()
• .where() statements
• operator classes .op() on columns

If you are using push workflows and want to change these fields in the index, you would need to:

• Comment out the index
• Push
• Uncomment the index and change those fields
• Push again

For the generate command, drizzle-kit will be triggered by any changes in the index for any property in the new drizzle indexes API, so there are no limitations here.