PostgreSQL 7.4 Documentation
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# D.2. Unsupported Features

The following features defined in SQL99 are not implemented in this release of PostgreSQL. In a few cases, equivalent functionality is available.

Identifier | Package | Description | Comment
--- | --- | --- | ---
B011 | Core | Embedded Ada |
B013 | Core | Embedded COBOL |
B014 | Core | Embedded Fortran |
B015 | Core | Embedded MUMPS |
B016 | Core | Embedded Pascal |
B017 | Core | Embedded PL/I |
B031 |  | Basic dynamic SQL |
B032 |  | Extended dynamic SQL |
B032-01 |  | <describe input> statement |
B041 |  | Extensions to embedded SQL exception declarations |
B051 |  | Enhanced execution rights |
E081 | Core | Basic Privileges |
E081-05 | Core | UPDATE privilege at the column level |
E081-07 | Core | REFERENCES privilege at the column level |
E121 | Core | Basic cursor support |
E121-06 | Core | Positioned UPDATE statement |
E121-07 | Core | Positioned DELETE statement |
E153 | Core | Updatable queries with subqueries |
E182 | Core | Module language |
F111 |  | Isolation levels other than SERIALIZABLE |
F111-01 |  | READ UNCOMMITTED isolation level |
F111-03 |  | REPEATABLE READ isolation level |
F121 |  | Basic diagnostics management |
F121-01 |  | GET DIAGNOSTICS statement |
F121-02 |  | SET TRANSACTION statement: DIAGNOSTICS SIZE clause |
F181 |  | Multiple module support |
F291 |  | UNIQUE predicate |
F301 |  | CORRESPONDING in query expressions |
F311 | Core | Schema definition statement |
F311-04 | Core | CREATE VIEW: WITH CHECK OPTION |
F341 |  | Usage tables |
F451 |  | Character set definition |
F461 |  | Named character sets |
F521 | Enhanced integrity management | Assertions |
F641 | OLAP facilities | Row and table constructors |
F661 |  | Simple tables |
F671 | Enhanced integrity management | Subqueries in CHECK | intentionally omitted
F691 |  | Collation and translation |
F721 |  | Deferrable constraints | foreign keys only
F731 |  | INSERT column privileges |
F741 |  | Referential MATCH types | no partial match yet
F751 |  | View CHECK enhancements |
F811 |  | Extended flagging |
F812 | Core | Basic flagging |
F813 |  | Extended flagging for "Core SQL Flagging" and "Catalog Lookup" only |
F821 |  | Local table references |
F831 |  | Full cursor update |
F831-01 |  | Updatable scrollable cursors |
F831-02 |  | Updatable ordered cursors |
S011 | Core | Distinct data types |
S011-01 | Core | USER_DEFINED_TYPES view |
S023 | Basic object support, SQL/MM support | Basic structured types |
S024 | Enhanced object support, SQL/MM support | Enhanced structured types |
S041 | Basic object support | Basic reference types |
S043 | Enhanced object support | Enhanced reference types |
S051 | Basic object support | Create table of type |
S081 | Enhanced object support | Subtables |
S091 | SQL/MM support | Basic array support |
S091-01 | SQL/MM support | Arrays of built-in data types |
S091-02 | SQL/MM support | Arrays of distinct types |
S091-03 | SQL/MM support | Array expressions |
S092 | SQL/MM support | Arrays of user-defined types |
S094 |  | Arrays of reference types |
S151 | Basic object support | Type predicate |
S161 | Enhanced object support | Subtype treatment |
S201 |  | SQL routines on arrays |
S201-01 |  | Array parameters |
S201-02 |  | Array as result type of functions |
S231 | Enhanced object support | Structured type locators |
S232 |  | Array locators |
S241 | Enhanced object support | Transform functions |
S251 |  | User-defined orderings |
S261 |  | Specific type method |
T011 |  | Timestamp in Information Schema |
T041 | Basic object support | Basic LOB data type support |
T041-01 | Basic object support | BLOB data type |
T041-02 | Basic object support | CLOB data type |
T041-03 | Basic object support | POSITION, LENGTH, LOWER, TRIM, UPPER, and SUBSTRING functions for LOB data types |
T041-04 | Basic object support | Concatenation of LOB data types |
T041-05 | Basic object support | LOB locator: non-holdable |
T042 |  | Extended LOB data type support |
T051 |  | Row types |
T111 |  | Updatable joins, unions, and columns |
T121 |  | WITH (excluding RECURSIVE) in query expression |
T131 |  | Recursive query |
T211 | Enhanced integrity management, Active database | Basic trigger capability |
T211-05 | Enhanced integrity management, Active database | Ability to specify a search condition that must be true before the trigger is invoked |
T211-06 | Enhanced integrity management, Active database | Support for run-time rules for the interaction of triggers and constraints |
T211-08 | Enhanced integrity management, Active database | Multiple triggers for the same event are executed in the order in which they were created | intentionally omitted
T251 |  | SET TRANSACTION statement: LOCAL option |
T261 |  | Chained transactions |
T271 |  | Savepoints |
T281 |  | SELECT privilege with column granularity |
T301 |  | Functional Dependencies |
T321 | Core | Basic SQL-invoked routines |
T321-02 | Core | User-defined stored procedures with no overloading |
T321-04 | Core | CALL statement |
T321-05 | Core | RETURN statement |
T331 |  | Basic roles |
T332 |  | Extended roles |
T401 |  | INSERT into a cursor |
T411 |  | UPDATE statement: SET ROW option |
T431 | OLAP facilities | CUBE and ROLLUP operations |
T461 |  | Symmetric BETWEEN predicate |
T471 |  | Result sets return value |
T491 |  | LATERAL derived table |
T511 |  | Transaction counts |
T541 |  | Updatable table references |
T561 |  | Holdable locators |
T571 |  | Array-returning external SQL-invoked functions |
T601 |  | Local cursor references |

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