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docs: mention CREATE TABLE LIKE linkage using INCLUDING DEFAULTS

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Mention that CREATE TABLE LIKE INCLUDING DEFAULTS creates a link between
the original and new tables if a default function modifies the database,
like nextval().
This commit is contained in:
Bruce Momjian
2014-01-25 14:32:48 -05:00
parent 71c6a8e375
commit e2989fcab6
1 changed files with 4 additions and 1 deletions
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doc/src/sgml/ref/create_table.sgml
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@@ -329,7 +329,10 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXI
</para> </para>
<para> <para>
Default expressions for the copied column definitions will only be Default expressions for the copied column definitions will only be
copied if <literal>INCLUDING DEFAULTS</literal> is specified. The copied if <literal>INCLUDING DEFAULTS</literal> is specified.
Defaults that call database-modification functions, like
<function>nextval</>, create a linkage between the original and
new tables. The
default behavior is to exclude default expressions, resulting in the default behavior is to exclude default expressions, resulting in the
copied columns in the new table having null defaults. copied columns in the new table having null defaults.
</para> </para>