Re: Section 4.1.2.7 contains false information
От | Tom Lane |
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Тема | Re: Section 4.1.2.7 contains false information |
Дата | |
Msg-id | 18318.1554825430@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Section 4.1.2.7 contains false information (PG Doc comments form <noreply@postgresql.org>) |
Ответы |
RE: Section 4.1.2.7 contains false information
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Список | pgsql-docs |
PG Doc comments form <noreply@postgresql.org> writes: > QUOTE: > The CAST() syntax conforms to SQL. The type 'string' syntax is a > generalization of the standard: SQL specifies this syntax only for a few > data types, but PostgreSQL allows it for all types. The syntax with :: is > historical PostgreSQL usage, as is the function-call syntax. > UNQUOTE > In fact, this is not 100% true. TIMESTAMP 'string' does not work this way. Looks like it works to me: regression=# select timestamp '2019-04-09 11:49'; timestamp --------------------- 2019-04-09 11:49:00 (1 row) If you feel that the documentation is unclear, you need to be clearer about how it's unclear ;-) (Reading between the lines of this complaint and your adjacent one, I kind of suspect that you were trying to use "TIMESTAMP something" where the something wasn't a literal string constant. But surely 4.1.2.7 makes it plain that the discussed syntax is for constants. You might need to read 4.2.9 "Type Casts" instead.) regards, tom lane
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