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Update SQL-command reference pages for schema features.

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This commit is contained in:
Tom Lane
2002-04-23 02:07:16 +00:00
parent 5dd1c713d0
commit 0c1fe3d2b9
38 changed files with 366 additions and 205 deletions
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25
doc/src/sgml/ref/create_table.sgml
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@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_table.sgml,v 1.53 2002/03/22 19:20:40 petere Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_table.sgml,v 1.54 2002/04/23 02:07:16 tgl Exp $
PostgreSQL documentation
-->
@ -54,17 +54,27 @@ and <replaceable class="PARAMETER">table_constraint</replaceable> is:
command.
</para>
<para>
If a schema name is given (for example, <literal>CREATE TABLE
myschema.mytable ...</>) then the table is created in the
specified schema. Otherwise it is created in the current schema (the one
at the front of the search path; see <literal>CURRENT_SCHEMA()</>).
TEMP tables exist in a special schema, so a schema name may not be
given when creating a TEMP table.
The table name must be distinct from the name of any other table,
sequence, index, or view in the same schema.
</para>
<para>
<command>CREATE TABLE</command> also automatically creates a data
type that represents the tuple type (structure type) corresponding
to one row of the table. Therefore, tables cannot have the same
name as any existing data type.
name as any existing data type in the same schema.
</para>
<para>
A table cannot have more than 1600 columns. (In practice, the
effective limit is lower because of tuple-length constraints). A
table cannot have the same name as a system catalog table.
effective limit is lower because of tuple-length constraints).
</para>
<para>
@ -97,8 +107,9 @@ and <replaceable class="PARAMETER">table_constraint</replaceable> is:
<para>
If specified, the table is created as a temporary table.
Temporary tables are automatically dropped at the end of a
session. Existing persistent tables with the same name are not
visible to the current session while the temporary table exists.
session. Existing permanent tables with the same name are not
visible to the current session while the temporary table exists,
unless they are referenced with schema-qualified names.
Any indexes created on a temporary table are automatically
temporary as well.
</para>
@ -115,7 +126,7 @@ and <replaceable class="PARAMETER">table_constraint</replaceable> is:
<term><replaceable class="PARAMETER">table_name</replaceable></term>
<listitem>
<para>
The name of the table to be created.
The name (optionally schema-qualified) of the table to be created.
</para>
</listitem>
</varlistentry>