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| author | Bruce Momjian <bruce@momjian.us> | 2014-04-19 08:41:51 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2014-04-19 08:41:51 -0400 |
| commit | 13ecb822e8da5668133b706474c25bc908ae370a (patch) | |
| tree | bf80faa006fbf9b60cbdb245bcecd9c9a464f099 /doc/src | |
| parent | 66b1084e2ccf1f5b8cb57ebb41f54f76850a2b5d (diff) | |
| download | postgresql-13ecb822e8da5668133b706474c25bc908ae370a.tar.gz postgresql-13ecb822e8da5668133b706474c25bc908ae370a.zip | |
libpq: have PQconnectdbParams() and PQpingParams accept "" as default
Previously, these functions treated "" optin values as defaults in some
ways, but not in others, like when comparing to .pgpass. Also, add
documentation to clarify that now "" and NULL use defaults, like
PQsetdbLogin() has always done.
BACKWARD INCOMPATIBILITY
Patch by Adrian Vondendriesch, docs by me
Report by Jeff Janes
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/libpq.sgml | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml index be0d602508d..1f0975ada68 100644 --- a/doc/src/sgml/libpq.sgml +++ b/doc/src/sgml/libpq.sgml @@ -131,15 +131,15 @@ PGconn *PQconnectdbParams(const char * const *keywords, <para> The passed arrays can be empty to use all default parameters, or can contain one or more parameter settings. They should be matched in length. - Processing will stop with the last non-<symbol>NULL</symbol> element - of the <literal>keywords</literal> array. + Processing will stop at the first <symbol>NULL</symbol> element + in the <literal>keywords</literal> array. </para> <para> - If any parameter is unspecified, then the corresponding - environment variable (see <xref linkend="libpq-envars">) - is checked. If the environment variable is not set either, - then the indicated built-in defaults are used. + If any parameter is NULL or an emptry string, the corresponding + environment variable (see <xref linkend="libpq-envars">) is checked. + If the environment variable is not set either, then the indicated + built-in defaults are used. </para> <para> |