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  5. PG_TS_PARSER

PG_TS_PARSER

PG_TS_PARSER contains entries defining text search parsers. A parser splits input text into lexemes and assigns a token type to each lexeme. Since a parser must be implemented by C functions, parsers can be created only by database administrators.

Table 1 PG_TS_PARSER columns

Name

Type

Reference

Description

oid

oid

-

Column identifier (hidden attribute; must be explicitly selected)

prsname

name

-

Text search parser name

prsnamespace

oid

PG_NAMESPACE.oid

OID of the namespace that contains this parser

prsstart

regproc

PG_PROC.oid

OID of the parser's startup function

prstoken

regproc

PG_PROC.oid

OID of the parser's next-token function

prsend

regproc

PG_PROC.oid

OID of the parser's shutdown function

prsheadline

regproc

PG_PROC.oid

OID of the parser's headline function

prslextype

regproc

PG_PROC.oid

OID of the parser's lextype function