urQL/docs/alter.md

ALTER INDEX [ <db-qualifer> ]{ <index-name> }
ON { <table-name> | <view-name> }
{ REBUILD | DISABLE | RESUME}

Discussion: RESUME will rebuild the index if the underlying object is dirty.

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ALTER NAMESPACE [ <database-name>. ]<namespace-name>
  TRANSFER { TABLE | VIEW } [ <db-qualifer> ]{ <table-name> | <view-name> }

Discussion: The namespace sys cannot be altered, nor can objects be transferred out of it.

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ALTER TABLE [ <db-qualifer> ]{ <table-name> }
  { ALTER COLUMN { <column-name> } 
      { <aura> | u(<aura>) [DEFAULT <constant_expression>] } [ ,... n 
    | ADD COLUMN { <column-name> } 
        { <aura> | u(<aura>) [DEFAULT <constant_expression>] } [ ,... n ]
    | DROP COLUMN { <column-name> } [ ,... n ]
    | ADD FOREIGN KEY <foreign-key-name> (<column-name> [ ,... n ])
      REFERENCES [<namespace-name>.]<table-name> ( <column-name> [ ,... n ])
      [ ON DELETE { NO ACTION | CASCADE | SET NULL | SET DEFAULT } ]
      [ ON UPDATE { NO ACTION | CASCADE | SET NULL | SET DEFAULT } ]
      [ ,... n ]
    | DROP FOREIGN KEY <foreign-key-name> [ ,... n ] }

Example:

ALTER TABLE my-table
DROP FOREIGN KEY fk-1, fk-2

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ALTER TRIGGER { [ <db-qualifer> ]{ <trigger-name> } | ALL ]
     ON { SERVER | <database.name> | <table-name> | <view-name> }
     [ ENABLE | DISABLE ]

TBD

Discussion: Not for initial release.

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ALTER VIEW [ <db-qualifer> ]{ <view-name> }
( { [<alias>.] <column-name> } [ ,...n ] )
AS <select_statement>