Re: \if, \elseif, \else, \endif (was Re: [HACKERS] PSQL commands:\quit_if, \quit_unless)

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От Corey Huinker
Тема Re: \if, \elseif, \else, \endif (was Re: [HACKERS] PSQL commands:\quit_if, \quit_unless)
Дата
Msg-id CADkLM=eA+rxg+vA1q0hGqfxH0WeWsLU+7W3xtvxfMO1Rw2YLSw@mail.gmail.com
обсуждение исходный текст
Ответ на Re: \if, \elseif, \else, \endif (was Re: [HACKERS] PSQL commands:\quit_if, \quit_unless)  (Corey Huinker <corey.huinker@gmail.com>)
Ответы Re: \if, \elseif, \else, \endif (was Re: [HACKERS] PSQL commands: \quit_if, \quit_unless)  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
Дерево обсуждения

All,
As it is, I've added interactive mode psql_error notifications about the resulting branching state of any branching commands, and any attempt to send non-branching commands or queries while in an inactive branch will generate a psql_error saying that the command was ignored. Waiting til I get what should or shouldn't be done about prompts before issuing the next patch revision.

So far, interactive branching information will look like this (it prints on every branching command and on every ignored command):

# \if true
active \if, executing commands
# select 1;
 ?column?
----------
        1
(1 row)

Time: 0.282 ms
# \else
inactive \else, ignoring commands
# select 1;
inside inactive branch, query ignored.
# select
... # 1;
inside inactive branch, query ignored.
# \endif
active \endif, executing commands
# \if false
inactive \if, ignoring commands
# \i file_name
inside inactive branch, command ignored.
# \elif false
inactive \elif, ignoring commands
# \else
active \else, executing commands
# \endif
active \endif, executing commands

Comments welcome.

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