PostgreSQL will build the index without taking any write locks. Postgres only.
The fields to index.
Non-key columns to be added to the lead level of the nonclustered index.
The message to display if the unique constraint is violated.
The name of the index. Defaults to model name + _ + fields concatenated
Index operator type. Postgres only
For FULLTEXT columns set your parser
Prefix to append to the index name.
Index type. Only used by mysql. One of
Should the index by unique? Can also be triggered by setting type to
The method to create the index by (
USING statement in SQL).
BTREE and HASH are supported by mysql and postgres.
Postgres additionally supports GIST, SPGIST, BRIN and GIN.
Optional where parameter for index. Can be used to limit the index to certain rows.
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