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Add support for renaming constraints

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reviewed by Josh Berkus and Dimitri Fontaine
This commit is contained in:
Peter Eisentraut
2012-03-10 20:19:13 +02:00
parent e914a144d3
commit 39d74e346c
7 changed files with 306 additions and 3 deletions
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16
doc/src/sgml/ref/alter_table.sgml
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@ -25,6 +25,8 @@ ALTER TABLE [ IF EXISTS ] [ ONLY ] <replaceable class="PARAMETER">name</replacea
<replaceable class="PARAMETER">action</replaceable> [, ... ]
ALTER TABLE [ IF EXISTS ] [ ONLY ] <replaceable class="PARAMETER">name</replaceable> [ * ]
RENAME [ COLUMN ] <replaceable class="PARAMETER">column</replaceable> TO <replaceable class="PARAMETER">new_column</replaceable>
ALTER TABLE [ IF EXISTS ] [ ONLY ] <replaceable class="PARAMETER">name</replaceable> [ * ]
RENAME CONSTRAINT <replaceable class="PARAMETER">constraint_name</replaceable> TO <replaceable class="PARAMETER">new_constraint_name</replaceable>
ALTER TABLE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable>
RENAME TO <replaceable class="PARAMETER">new_name</replaceable>
ALTER TABLE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable>
@ -569,8 +571,8 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable>
<listitem>
<para>
The <literal>RENAME</literal> forms change the name of a table
(or an index, sequence, or view) or the name of an individual column in
a table. There is no effect on the stored data.
(or an index, sequence, or view), the name of an individual column in
a table, or the name of a constraint of the table. There is no effect on the stored data.
</para>
</listitem>
</varlistentry>
@ -883,7 +885,8 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable>
<para>
If a table has any descendant tables, it is not permitted to add,
rename, or change the type of a column in the parent table without doing
rename, or change the type of a column, or rename an inherited constraint
in the parent table without doing
the same to the descendants. That is, <command>ALTER TABLE ONLY</command>
will be rejected. This ensures that the descendants always have
columns matching the parent.
@ -982,6 +985,13 @@ ALTER TABLE distributors RENAME TO suppliers;
</programlisting>
</para>
<para>
To rename an existing constraint:
<programlisting>
ALTER TABLE distributors RENAME CONSTRAINT zipchk TO zip_check;
</programlisting>
</para>
<para>
To add a not-null constraint to a column:
<programlisting>