ALTER TEXT SEARCH PARSER — change the definition of a text search parser
ALTER TEXT SEARCH PARSER name RENAME TO new_name ALTER TEXT SEARCH PARSER name SET SCHEMA new_schema
ALTER TEXT SEARCH PARSER changes the definition of a text search parser. Currently, the only supported functionality is to change the parser's name.
You must be a superuser to use ALTER TEXT SEARCH PARSER.
nameThe name (optionally schema-qualified) of an existing text search parser.
new_nameThe new name of the text search parser.
new_schemaThe new schema for the text search parser.
There is no ALTER TEXT SEARCH PARSER statement in the SQL standard.
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https://www.postgresql.org/docs/13/sql-altertsparser.html