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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.
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@ -1,4 +1,4 @@
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<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.34 2008/09/08 00:47:40 tgl Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.35 2008/11/25 20:47:42 tgl Exp $ -->
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<chapter id="information-schema">
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<title>The Information Schema</title>
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@ -2192,7 +2192,7 @@ ORDER BY c.ordinal_position;
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<entry><type>sql_identifier</type></entry>
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<entry>
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Name of the database that contains the table that contains the
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column that is restricted by some constraint (always the
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column that is restricted by this constraint (always the
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current database)
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</entry>
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</row>
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@ -2202,7 +2202,7 @@ ORDER BY c.ordinal_position;
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<entry><type>sql_identifier</type></entry>
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<entry>
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Name of the schema that contains the table that contains the
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column that is restricted by some constraint
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column that is restricted by this constraint
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</entry>
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</row>
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@ -2211,7 +2211,7 @@ ORDER BY c.ordinal_position;
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<entry><type>sql_identifier</type></entry>
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<entry>
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Name of the table that contains the column that is restricted
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by some constraint
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by this constraint
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</entry>
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</row>
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@ -2219,7 +2219,7 @@ ORDER BY c.ordinal_position;
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<entry><literal>column_name</literal></entry>
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<entry><type>sql_identifier</type></entry>
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<entry>
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Name of the column that is restricted by some constraint
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Name of the column that is restricted by this constraint
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</entry>
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</row>
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@ -2236,7 +2236,9 @@ ORDER BY c.ordinal_position;
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<entry><literal>position_in_unique_constraint</literal></entry>
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<entry><type>cardinal_number</type></entry>
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<entry>
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Not yet implemented
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For a foreign-key constraint, ordinal position of the referenced
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column within its unique constraint (count starts at 1);
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otherwise null
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</entry>
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</row>
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</tbody>
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