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authorTom Lane <tgl@sss.pgh.pa.us>2008-11-25 20:47:49 +0000
committerTom Lane <tgl@sss.pgh.pa.us>2008-11-25 20:47:49 +0000
commitfb2a0a450b81c45f366db890bbad45dbc2616daa (patch)
tree842816ea8e6b1b81f550645c046df26de99b2432
parent05798c9275261c1f9308dea5e1bee559e461b689 (diff)
downloadpostgresql-fb2a0a450b81c45f366db890bbad45dbc2616daa.tar.gz
postgresql-fb2a0a450b81c45f366db890bbad45dbc2616daa.zip
information_schema.key_column_usage.position_in_unique_constraint was
misdocumented as not being implemented. In reality it has worked since the release of 8.2.
-rw-r--r--doc/src/sgml/information_schema.sgml14
1 files changed, 8 insertions, 6 deletions
diff --git a/doc/src/sgml/information_schema.sgml b/doc/src/sgml/information_schema.sgml
index d4d51a34a03..c04ea28f6a7 100644
--- a/doc/src/sgml/information_schema.sgml
+++ b/doc/src/sgml/information_schema.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.33 2007/02/20 23:14:19 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.33.2.1 2008/11/25 20:47:49 tgl Exp $ -->
<chapter id="information-schema">
<title>The Information Schema</title>
@@ -2192,7 +2192,7 @@ ORDER BY c.ordinal_position;
<entry><type>sql_identifier</type></entry>
<entry>
Name of the database that contains the table that contains the
- column that is restricted by some constraint (always the
+ column that is restricted by this constraint (always the
current database)
</entry>
</row>
@@ -2202,7 +2202,7 @@ ORDER BY c.ordinal_position;
<entry><type>sql_identifier</type></entry>
<entry>
Name of the schema that contains the table that contains the
- column that is restricted by some constraint
+ column that is restricted by this constraint
</entry>
</row>
@@ -2211,7 +2211,7 @@ ORDER BY c.ordinal_position;
<entry><type>sql_identifier</type></entry>
<entry>
Name of the table that contains the column that is restricted
- by some constraint
+ by this constraint
</entry>
</row>
@@ -2219,7 +2219,7 @@ ORDER BY c.ordinal_position;
<entry><literal>column_name</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>
- Name of the column that is restricted by some constraint
+ Name of the column that is restricted by this constraint
</entry>
</row>
@@ -2236,7 +2236,9 @@ ORDER BY c.ordinal_position;
<entry><literal>position_in_unique_constraint</literal></entry>
<entry><type>cardinal_number</type></entry>
<entry>
- Not yet implemented
+ For a foreign-key constraint, ordinal position of the referenced
+ column within its unique constraint (count starts at 1);
+ otherwise null
</entry>
</row>
</tbody>