PG_TS_PARSER

PG_TS_PARSER 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.

**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