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Implement the collation columns of various information schema views

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Fill in the collation columns of the views attributes, columns,
domains, and element_types.  Also update collation information in
sql_implementation_info.
pull/1/head
Peter Eisentraut 14 years ago
parent 5594d14696
commit 615c384972
2 changed files with 132 additions and 54 deletions
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  1. 108
      doc/src/sgml/information_schema.sgml
  2. 78
      src/backend/catalog/information_schema.sql

108
doc/src/sgml/information_schema.sgml
Unescape View File

@ -379,6 +379,53 @@
</entry> </entry>
</row> </row>
<row>
<entry><literal>character_set_catalog</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry>
</row>
<row>
<entry><literal>character_set_schema</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry>
</row>
<row>
<entry><literal>character_set_name</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry>
</row>
<row>
<entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the database containing the collation of the attribute
(always the current database), null if default or the data type
of the attribute is not collatable
</entry>
</row>
<row>
<entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the schema containing the collation of the attribute,
null if default or the data type of the attribute is not
collatable
</entry>
</row>
<row>
<entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the collation of the attribute, null if default or the
data type of the attribute is not collatable
</entry>
</row>
<row> <row>
<entry><literal>numeric_precision</literal></entry> <entry><literal>numeric_precision</literal></entry>
<entry><type>cardinal_number</type></entry> <entry><type>cardinal_number</type></entry>
@ -1321,19 +1368,29 @@
<row> <row>
<entry><literal>collation_catalog</literal></entry> <entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the database containing the collation of the column
(always the current database), null if default or the data type
of the column is not collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_schema</literal></entry> <entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the schema containing the collation of the column, null
if default or the data type of the column is not collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_name</literal></entry> <entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the collation of the column, null if default or the
data type of the column is not collatable
</entry>
</row> </row>
<row> <row>
@ -1996,19 +2053,29 @@
<row> <row>
<entry><literal>collation_catalog</literal></entry> <entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the database containing the collation of the domain
(always the current database), null if default or the data type
of the domain is not collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_schema</literal></entry> <entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the schema containing the collation of the domain, null
if default or the data type of the domain is not collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_name</literal></entry> <entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the collation of the column, null if default or the
data type of the domain is not collatable
</entry>
</row> </row>
<row> <row>
@ -2275,19 +2342,30 @@ ORDER BY c.ordinal_position;
<row> <row>
<entry><literal>collation_catalog</literal></entry> <entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the database containing the collation of the element
type (always the current database), null if default or the data
type of the element is not collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_schema</literal></entry> <entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the schema containing the collation of the element
type, null if default or the data type of the element is not
collatable
</entry>
</row> </row>
<row> <row>
<entry><literal>collation_name</literal></entry> <entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>
Name of the collation of the element type, null if default or
the data type of the element is not collatable
</entry>
</row> </row>
<row> <row>
@ -3025,19 +3103,19 @@ ORDER BY c.ordinal_position;
<row> <row>
<entry><literal>collation_catalog</literal></entry> <entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to parameter data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>
<entry><literal>collation_schema</literal></entry> <entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to parameter data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>
<entry><literal>collation_name</literal></entry> <entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to parameter data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>
@ -3912,19 +3990,19 @@ ORDER BY c.ordinal_position;
<row> <row>
<entry><literal>collation_catalog</literal></entry> <entry><literal>collation_catalog</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to return data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>
<entry><literal>collation_schema</literal></entry> <entry><literal>collation_schema</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to return data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>
<entry><literal>collation_name</literal></entry> <entry><literal>collation_name</literal></entry>
<entry><type>sql_identifier</type></entry> <entry><type>sql_identifier</type></entry>
<entry>Applies to a feature not available in <productname>PostgreSQL</></entry> <entry>Always null, since this information is not applied to return data types in <productname>PostgreSQL</></entry>
</row> </row>
<row> <row>

78
src/backend/catalog/information_schema.sql
Unescape View File

@ -297,9 +297,9 @@ CREATE VIEW attributes AS
CAST(null AS sql_identifier) AS character_set_schema, CAST(null AS sql_identifier) AS character_set_schema,
CAST(null AS sql_identifier) AS character_set_name, CAST(null AS sql_identifier) AS character_set_name,
CAST(null AS sql_identifier) AS collation_catalog, CAST(CASE WHEN nco.nspname IS NOT NULL THEN current_database() END AS sql_identifier) AS collation_catalog,
CAST(null AS sql_identifier) AS collation_schema, CAST(nco.nspname AS sql_identifier) AS collation_schema,
CAST(null AS sql_identifier) AS collation_name, CAST(co.collname AS sql_identifier) AS collation_name,
CAST( CAST(
_pg_numeric_precision(_pg_truetypid(a, t), _pg_truetypmod(a, t)) _pg_numeric_precision(_pg_truetypid(a, t), _pg_truetypmod(a, t))
@ -336,14 +336,13 @@ CREATE VIEW attributes AS
CAST(a.attnum AS sql_identifier) AS dtd_identifier, CAST(a.attnum AS sql_identifier) AS dtd_identifier,
CAST('NO' AS yes_or_no) AS is_derived_reference_attribute CAST('NO' AS yes_or_no) AS is_derived_reference_attribute
FROM (pg_attribute a LEFT JOIN pg_attrdef ad ON attrelid = adrelid AND attnum = adnum), FROM (pg_attribute a LEFT JOIN pg_attrdef ad ON attrelid = adrelid AND attnum = adnum)
pg_class c, pg_namespace nc, JOIN (pg_class c JOIN pg_namespace nc ON (c.relnamespace = nc.oid)) ON a.attrelid = c.oid
(pg_type t JOIN pg_namespace nt ON (t.typnamespace = nt.oid)) JOIN (pg_type t JOIN pg_namespace nt ON (t.typnamespace = nt.oid)) ON a.atttypid = t.oid
LEFT JOIN (pg_collation co JOIN pg_namespace nco ON (co.collnamespace = nco.oid))
ON a.attcollation = co.oid AND (nco.nspname, co.collname) <> ('pg_catalog', 'default')
WHERE a.attrelid = c.oid WHERE a.attnum > 0 AND NOT a.attisdropped
AND a.atttypid = t.oid
AND nc.oid = c.relnamespace
AND a.attnum > 0 AND NOT a.attisdropped
AND c.relkind in ('c'); AND c.relkind in ('c');
GRANT SELECT ON attributes TO PUBLIC; GRANT SELECT ON attributes TO PUBLIC;
@ -678,9 +677,9 @@ CREATE VIEW columns AS
CAST(null AS sql_identifier) AS character_set_schema, CAST(null AS sql_identifier) AS character_set_schema,
CAST(null AS sql_identifier) AS character_set_name, CAST(null AS sql_identifier) AS character_set_name,
CAST(null AS sql_identifier) AS collation_catalog, CAST(CASE WHEN nco.nspname IS NOT NULL THEN current_database() END AS sql_identifier) AS collation_catalog,
CAST(null AS sql_identifier) AS collation_schema, CAST(nco.nspname AS sql_identifier) AS collation_schema,
CAST(null AS sql_identifier) AS collation_name, CAST(co.collname AS sql_identifier) AS collation_name,
CAST(CASE WHEN t.typtype = 'd' THEN current_database() ELSE null END CAST(CASE WHEN t.typtype = 'd' THEN current_database() ELSE null END
AS sql_identifier) AS domain_catalog, AS sql_identifier) AS domain_catalog,
@ -718,16 +717,15 @@ CREATE VIEW columns AS
AND EXISTS (SELECT 1 FROM pg_rewrite WHERE ev_class = c.oid AND ev_type = '4' AND is_instead)) AND EXISTS (SELECT 1 FROM pg_rewrite WHERE ev_class = c.oid AND ev_type = '4' AND is_instead))
THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_updatable THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_updatable
FROM (pg_attribute a LEFT JOIN pg_attrdef ad ON attrelid = adrelid AND attnum = adnum), FROM (pg_attribute a LEFT JOIN pg_attrdef ad ON attrelid = adrelid AND attnum = adnum)
pg_class c, pg_namespace nc, JOIN (pg_class c JOIN pg_namespace nc ON (c.relnamespace = nc.oid)) ON a.attrelid = c.oid
(pg_type t JOIN pg_namespace nt ON (t.typnamespace = nt.oid)) JOIN (pg_type t JOIN pg_namespace nt ON (t.typnamespace = nt.oid)) ON a.atttypid = t.oid
LEFT JOIN (pg_type bt JOIN pg_namespace nbt ON (bt.typnamespace = nbt.oid)) LEFT JOIN (pg_type bt JOIN pg_namespace nbt ON (bt.typnamespace = nbt.oid))
ON (t.typtype = 'd' AND t.typbasetype = bt.oid) ON (t.typtype = 'd' AND t.typbasetype = bt.oid)
LEFT JOIN (pg_collation co JOIN pg_namespace nco ON (co.collnamespace = nco.oid))
ON a.attcollation = co.oid AND (nco.nspname, co.collname) <> ('pg_catalog', 'default')
WHERE a.attrelid = c.oid WHERE (NOT pg_is_other_temp_schema(nc.oid))
AND a.atttypid = t.oid
AND nc.oid = c.relnamespace
AND (NOT pg_is_other_temp_schema(nc.oid))
AND a.attnum > 0 AND NOT a.attisdropped AND c.relkind in ('r', 'v', 'f') AND a.attnum > 0 AND NOT a.attisdropped AND c.relkind in ('r', 'v', 'f')
@ -914,9 +912,9 @@ CREATE VIEW domains AS
CAST(null AS sql_identifier) AS character_set_schema, CAST(null AS sql_identifier) AS character_set_schema,
CAST(null AS sql_identifier) AS character_set_name, CAST(null AS sql_identifier) AS character_set_name,
CAST(null AS sql_identifier) AS collation_catalog, CAST(CASE WHEN nco.nspname IS NOT NULL THEN current_database() END AS sql_identifier) AS collation_catalog,
CAST(null AS sql_identifier) AS collation_schema, CAST(nco.nspname AS sql_identifier) AS collation_schema,
CAST(null AS sql_identifier) AS collation_name, CAST(co.collname AS sql_identifier) AS collation_name,
CAST( CAST(
_pg_numeric_precision(t.typbasetype, t.typtypmod) _pg_numeric_precision(t.typbasetype, t.typtypmod)
@ -954,13 +952,13 @@ CREATE VIEW domains AS
CAST(null AS cardinal_number) AS maximum_cardinality, CAST(null AS cardinal_number) AS maximum_cardinality,
CAST(1 AS sql_identifier) AS dtd_identifier CAST(1 AS sql_identifier) AS dtd_identifier
FROM pg_type t, pg_namespace nt, FROM (pg_type t JOIN pg_namespace nt ON t.typnamespace = nt.oid)
pg_type bt, pg_namespace nbt JOIN (pg_type bt JOIN pg_namespace nbt ON bt.typnamespace = nbt.oid)
ON (t.typbasetype = bt.oid AND t.typtype = 'd')
LEFT JOIN (pg_collation co JOIN pg_namespace nco ON (co.collnamespace = nco.oid))
ON t.typcollation = co.oid AND (nco.nspname, co.collname) <> ('pg_catalog', 'default')
WHERE t.typnamespace = nt.oid ;
AND t.typbasetype = bt.oid
AND bt.typnamespace = nbt.oid
AND t.typtype = 'd';
GRANT SELECT ON domains TO PUBLIC; GRANT SELECT ON domains TO PUBLIC;
@ -1515,7 +1513,7 @@ CREATE TABLE sql_implementation_info (
) WITHOUT OIDS; ) WITHOUT OIDS;
INSERT INTO sql_implementation_info VALUES ('10003', 'CATALOG NAME', NULL, 'Y', NULL); INSERT INTO sql_implementation_info VALUES ('10003', 'CATALOG NAME', NULL, 'Y', NULL);
INSERT INTO sql_implementation_info VALUES ('10004', 'COLLATING SEQUENCE', NULL, '', 'not supported'); INSERT INTO sql_implementation_info VALUES ('10004', 'COLLATING SEQUENCE', NULL, (SELECT default_collate_name FROM character_sets), NULL);
INSERT INTO sql_implementation_info VALUES ('23', 'CURSOR COMMIT BEHAVIOR', 1, NULL, 'close cursors and retain prepared statements'); INSERT INTO sql_implementation_info VALUES ('23', 'CURSOR COMMIT BEHAVIOR', 1, NULL, 'close cursors and retain prepared statements');
INSERT INTO sql_implementation_info VALUES ('2', 'DATA SOURCE NAME', NULL, '', NULL); INSERT INTO sql_implementation_info VALUES ('2', 'DATA SOURCE NAME', NULL, '', NULL);
INSERT INTO sql_implementation_info VALUES ('17', 'DBMS NAME', NULL, (select trim(trailing ' ' from substring(version() from '^[^0-9]*'))), NULL); INSERT INTO sql_implementation_info VALUES ('17', 'DBMS NAME', NULL, (select trim(trailing ' ' from substring(version() from '^[^0-9]*'))), NULL);
@ -2442,9 +2440,9 @@ CREATE VIEW element_types AS
CAST(null AS sql_identifier) AS character_set_catalog, CAST(null AS sql_identifier) AS character_set_catalog,
CAST(null AS sql_identifier) AS character_set_schema, CAST(null AS sql_identifier) AS character_set_schema,
CAST(null AS sql_identifier) AS character_set_name, CAST(null AS sql_identifier) AS character_set_name,
CAST(null AS sql_identifier) AS collation_catalog, CAST(CASE WHEN nco.nspname IS NOT NULL THEN current_database() END AS sql_identifier) AS collation_catalog,
CAST(null AS sql_identifier) AS collation_schema, CAST(nco.nspname AS sql_identifier) AS collation_schema,
CAST(null AS sql_identifier) AS collation_name, CAST(co.collname AS sql_identifier) AS collation_name,
CAST(null AS cardinal_number) AS numeric_precision, CAST(null AS cardinal_number) AS numeric_precision,
CAST(null AS cardinal_number) AS numeric_precision_radix, CAST(null AS cardinal_number) AS numeric_precision_radix,
CAST(null AS cardinal_number) AS numeric_scale, CAST(null AS cardinal_number) AS numeric_scale,
@ -2470,7 +2468,7 @@ CREATE VIEW element_types AS
/* columns, attributes */ /* columns, attributes */
SELECT c.relnamespace, CAST(c.relname AS sql_identifier), SELECT c.relnamespace, CAST(c.relname AS sql_identifier),
CASE WHEN c.relkind = 'c' THEN 'USER-DEFINED TYPE'::text ELSE 'TABLE'::text END, CASE WHEN c.relkind = 'c' THEN 'USER-DEFINED TYPE'::text ELSE 'TABLE'::text END,
a.attnum, a.atttypid a.attnum, a.atttypid, a.attcollation
FROM pg_class c, pg_attribute a FROM pg_class c, pg_attribute a
WHERE c.oid = a.attrelid WHERE c.oid = a.attrelid
AND c.relkind IN ('r', 'v', 'f', 'c') AND c.relkind IN ('r', 'v', 'f', 'c')
@ -2480,7 +2478,7 @@ CREATE VIEW element_types AS
/* domains */ /* domains */
SELECT t.typnamespace, CAST(t.typname AS sql_identifier), SELECT t.typnamespace, CAST(t.typname AS sql_identifier),
'DOMAIN'::text, 1, t.typbasetype 'DOMAIN'::text, 1, t.typbasetype, t.typcollation
FROM pg_type t FROM pg_type t
WHERE t.typtype = 'd' WHERE t.typtype = 'd'
@ -2488,7 +2486,7 @@ CREATE VIEW element_types AS
/* parameters */ /* parameters */
SELECT pronamespace, CAST(proname || '_' || CAST(oid AS text) AS sql_identifier), SELECT pronamespace, CAST(proname || '_' || CAST(oid AS text) AS sql_identifier),
'ROUTINE'::text, (ss.x).n, (ss.x).x 'ROUTINE'::text, (ss.x).n, (ss.x).x, 0
FROM (SELECT p.pronamespace, p.proname, p.oid, FROM (SELECT p.pronamespace, p.proname, p.oid,
_pg_expandarray(coalesce(p.proallargtypes, p.proargtypes::oid[])) AS x _pg_expandarray(coalesce(p.proallargtypes, p.proargtypes::oid[])) AS x
FROM pg_proc p) AS ss FROM pg_proc p) AS ss
@ -2497,10 +2495,12 @@ CREATE VIEW element_types AS
/* result types */ /* result types */
SELECT p.pronamespace, CAST(p.proname || '_' || CAST(p.oid AS text) AS sql_identifier), SELECT p.pronamespace, CAST(p.proname || '_' || CAST(p.oid AS text) AS sql_identifier),
'ROUTINE'::text, 0, p.prorettype 'ROUTINE'::text, 0, p.prorettype, 0
FROM pg_proc p FROM pg_proc p
) AS x (objschema, objname, objtype, objdtdid, objtypeid) ) AS x (objschema, objname, objtype, objdtdid, objtypeid, objcollation)
LEFT JOIN (pg_collation co JOIN pg_namespace nco ON (co.collnamespace = nco.oid))
ON x.objcollation = co.oid AND (nco.nspname, co.collname) <> ('pg_catalog', 'default')
WHERE n.oid = x.objschema WHERE n.oid = x.objschema
AND at.oid = x.objtypeid AND at.oid = x.objtypeid

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