---
title: "pg_ts_parser"
id: catalog-pg-ts-parser
pg_version: "20devel"
---

<a id="catalog-pg-ts-parser"></a>

## 52.67. 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](textsearch.md). 

**pg_ts_parser Columns**

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