urQL/docs/drop.md

DROP DATABASE [WARN] <database-name>

Discussion:
WARN prevents dropping if populated tables exist in database.

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DROP INDEX <index-name> ON [ <db-qualifer> ] { <table-name> | <view-name> }

Discussion: Cannot drop indices whose names begin with "pk-", as these are table primary keys.

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DROP NAMESPACE [ <database-name>. ]<namespace-name>

Discussion: Only succeeds when no tables or views are in the namespace. Cannot drop namespaces dbo and sys.

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DROP TABLE [WARN] [ <db-qualifer> ] { <table-name> }

Discussion: Cannot drop if used in view. WARN prevents dropping if used in a foreign key.

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DROP TRIGGER [ <db-qualifer> ] { <trigger-name> } ON { <table-name> | <view-name> }

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DROP TYPE <type-name> TBD

Discussion: Cannot drop if type-name is in use.

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DROP VIEW [ <db-qualifer> ] <view-name>

Discussion: Cannot drop if view is in use by another view.