rdelaage
/
postgresql
mirror of https://git.postgresql.org/git/postgresql.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Doc: in v12 release notes, explain how to replace uses of consrc and adsrc. 

While you can find that info if you drill down far enough, it seems more
helpful to put something right in the compatibility notes.  Per a question
from Ivan Sergio Borgonovo.

Discussion: https://postgr.es/m/a6359855-2a5e-a56c-ebba-4ea46a1f0ebe@webthatworks.it
This commit is contained in:
Tom Lane 2019-11-15 12:31:53 -05:00
parent 5a6eea0926
commit d61e7f174d
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
doc/src/sgml/release-12.sgml
View File

@ -1590,6 +1590,16 @@ Author: Peter Eisentraut <peter_e@gmx.net>
linkend="catalog-pg-constraint"><structname>pg_constraint</structname></link>.<structfield>consrc</structfield>
column (Peter Eisentraut)
</para>
<para>
This column has been deprecated for a long time, because it did not
update in response to other catalog changes (such as column renamings).
The recommended way to get a text version of a check constraint's
expression from <structname>pg_constraint</structname>
is <literal>pg_get_expr(conbin, conrelid)</literal>.
<function>pg_get_constraintdef()</function> is also a useful
alternative.
</para>
</listitem>
<listitem>
@ -1603,6 +1613,14 @@ Author: Peter Eisentraut <peter_e@gmx.net>
linkend="catalog-pg-attrdef"><structname>pg_attrdef</structname></link>.<structfield>adsrc</structfield>
column (Peter Eisentraut)
</para>
<para>
This column has been deprecated for a long time, because it did not
update in response to other catalog changes (such as column renamings).
The recommended way to get a text version of a default-value expression
from <structname>pg_attrdef</structname> is <literal>pg_get_expr(adbin,
adrelid)</literal>.
</para>
</listitem>
<listitem>