Wiki / Functions

Parses a string of text, extracts a potential type name from it, and translates its type modifier, if any. A syntax error in the string will result in an error; but if the string is a syntactically valid type name that happens not to be found in the catalogs, the result is NULL. The result is -1 if no type modifier is present.

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

group

info

group label

系统信息函数和操作符

lang

en

layout

table-new

pages

functions-info.html

prose only

false

to_regtypemod ( text ) → integer → integer

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