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Fix documentation of information_schema.element_types

author Peter Eisentraut <peter_e@gmx.net>

Thu, 9 Jun 2011 04:24:14 +0000 (07:24 +0300)

committer Peter Eisentraut <peter_e@gmx.net>

Thu, 9 Jun 2011 04:27:51 +0000 (07:27 +0300)

The documentation of the columns collection_type_identifier and
dtd_identifier was wrong. This effectively reverts commits
8e1ccad51901e83916dae297cd9afa450957a36c and
57352df66d3a0885899d39c04c067e63c7c0ba30 and updates the name
array_type_identifier (the name in SQL:1999) to
collection_type_identifier.

closes bug #5926

doc/src/sgml/information_schema.sgml patch | blob | blame | history

diff --git a/doc/src/sgml/information_schema.sgml b/doc/src/sgml/information_schema.sgml

index 124bbc3ac291b21a8fa8ac1315d9096fa1698d4a..56651ce6cd2672506430db4560c2a8a304851217 100644 (file)

--- a/doc/src/sgml/information_schema.sgml

+++ b/doc/src/sgml/information_schema.sgml

@@ -1884,7 +1884,7 @@

SELECT c.column_name, c.data_type, e.data_type AS element_type

FROM information_schema.columns c LEFT JOIN information_schema.element_types e

ON ((c.table_catalog, c.table_schema, c.table_name, 'TABLE', c.dtd_identifier)

- = (e.object_catalog, e.object_schema, e.object_name, e.object_type, e.dtd_identifier))

+ = (e.object_catalog, e.object_schema, e.object_name, e.object_type, e.collection_type_identifier))

WHERE c.table_schema = '...' AND c.table_name = '...'

ORDER BY c.ordinal_position;

</programlisting>

@@ -1944,11 +1944,13 @@ ORDER BY c.ordinal_position;

</row>

<row>

- <entry><literal>dtd_identifier</literal></entry>

+ <entry><literal>collection_type_identifier</literal></entry>

<entry><type>sql_identifier</type></entry>

<entry>

The identifier of the data type descriptor of the array being

- described

+ described. Use this to join with the

+ <literal>dtd_identifier</literal> columns of other information

+ schema views.

</entry>

</row>

@@ -2103,6 +2105,14 @@ ORDER BY c.ordinal_position;

<entry>Always null, because arrays always have unlimited maximum cardinality in <productname>PostgreSQL</></entry>

</row>

+ <row>

+ <entry><literal>dtd_identifier</literal></entry>

+ <entry><type>sql_identifier</type></entry>

+ <entry>

+ An identifier of the data type descriptor of the element. This

+ is currently not useful.

+ </entry>

+ </row>

</tbody>

</tgroup>

</table>

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