grammar PostgreAlterIndex;

import PostgreKeyword, Keyword, PostgreBase, BaseRule;

alterIndex
    : alterIndexName renameIndex
    | alterIndexDependsOnExtension
    | alterIndexSetTableSpace
    ;

alterIndexName
    : ALTER INDEX (IF EXISTS)? indexName
    ;

renameIndex
    : RENAME TO indexName
    ;

alterIndexDependsOnExtension
    : ALTER INDEX indexName DEPENDS ON EXTENSION extensionName
    ;

alterIndexSetTableSpace
    : ALTER INDEX ALL IN TABLESPACE indexName (OWNED BY rowNames)?
    ;