PG_TS_PARSER

PG_TS_PARSER contains definition of text search parsers. A parser is responsible for splitting input text into lexemes and assigning a token type to each lexeme. Because the parser must be implemented through functions at the C language level, the new parser must be created by the database system administrator.

**Table 1** PG_TS_PARSER columns
Name	Type	Reference	Description
oid	oid	-	Row identifier (hidden attribute, which must be specified).
prsname	name	-	Text search parser name.
prsnamespace	oid	oid in PG_NAMESPACE	OID of the namespace that contains the parser.
prsstart	regproc	proname in PG_PROC	Name of the parser's startup function.
prstoken	regproc	proname in PG_PROC	Name of the parser's next-token function.
prsend	regproc	proname in PG_PROC	Name of the parser's shutdown function.
prsheadline	regproc	proname in PG_PROC	Name of the parser's headline function.
prslextype	regproc	proname in PG_PROC	Name of the parser's lextype function.