pg_ts_parser
   The pg_ts_parser catalog contains entries
   defining text search parsers.  A parser is responsible for splitting
   input text into lexemes and assigning a token type to each lexeme.
   Since a parser must be implemented by C-language-level functions,
   creation of new parsers is restricted to database superusers.
  
PostgreSQL's text search features are described at length in Chapter 12.
Table 51.60. pg_ts_parser Columns
| Column Type Description | 
|---|
| 
        Row identifier | 
| 
        Text search parser name | 
| 
        The OID of the namespace that contains this parser | 
| 
        OID of the parser's startup function | 
| 
        OID of the parser's next-token function | 
| 
        OID of the parser's shutdown function | 
| 
        OID of the parser's headline function | 
| 
        OID of the parser's lextype function |