52.62. pg_ts_parser
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## 52.62. 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 52.62. pg_ts_parser Columns

Column Type Description
`oid` oid Row identifier
`prsname` name Text search parser name
`prsnamespace` oid (references pg_namespace.`oid`) The OID of the namespace that contains this parser
`prsstart` regproc (references pg_proc.`oid`) OID of the parser's startup function
`prstoken` regproc (references pg_proc.`oid`) OID of the parser's next-token function
`prsend` regproc (references pg_proc.`oid`) OID of the parser's shutdown function
`prsheadline` regproc (references pg_proc.`oid`) OID of the parser's headline function (zero if none)
`prslextype` regproc (references pg_proc.`oid`) OID of the parser's lextype function

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