Re: Are functions automatically transactioned?
От | Kevin Lohka |
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Тема | Re: Are functions automatically transactioned? |
Дата | |
Msg-id | E5ADC7A7-88EB-11D8-8E0B-000A95728606@aboutfacedata.ab.ca обсуждение исходный текст |
Ответ на | Are functions automatically transactioned? (Ciprian Popovici <ciprian@zuavra.net>) |
Список | pgsql-general |
Ciprian, I just saw this in the online docs at http://www.postgresql.org/docs/7.4/interactive/plpgsql-structure.html <smaller>It is important not to confuse the use of <fontfamily><param>Courier</param>BEGIN </fontfamily>/<fontfamily><param>Courier</param>END </fontfamily>for grouping statements in PL/pgSQL with the database commands for transaction control. PL/pgSQL 's <fontfamily><param>Courier</param>BEGIN </fontfamily>/<fontfamily><param>Courier</param>END </fontfamily>are only for grouping; they do not start or end a transaction. </smaller>Functions and trigger procedures are always executed within a transaction<smaller> established by an outer query --- they cannot start or commit transactions, since PostgreSQL does not have nested transactions. </smaller> HTH Kevin Lohka On Wednesday, April 7, 2004, at 03:43 PM, Ciprian Popovici wrote: <excerpt> But are the contents of a function placed in a transaction automatically by the server, or do I have to "manually" control the transaction around the call to the function? -- Ciprian Popovici </excerpt> Ciprian, I just saw this in the online docs at http://www.postgresql.org/docs/7.4/interactive/plpgsql-structure.html It is important not to confuse the use of BEGIN /END for grouping statements in PL/pgSQL with the database commands for transaction control. PL/pgSQL 's BEGIN /END are only for grouping; they do not start or end a transaction. Functions and trigger procedures are always executed within a transaction established by an outer query --- they cannot start or commit transactions, since PostgreSQL does not have nested transactions. HTH Kevin Lohka On Wednesday, April 7, 2004, at 03:43 PM, Ciprian Popovici wrote: > But are the contents of a function placed in a > transaction automatically by the server, or do I have to "manually" > control > the transaction around the call to the function? > > -- > Ciprian Popovici >
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