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Commit939ec9b

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Update SQL features/conformance information to SQL:2011
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‎doc/src/sgml/features.sgml

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@@ -14,9 +14,9 @@
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<para>
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The formal name of the SQL standard is ISO/IEC 9075 <quote>Database
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Language SQL</quote>. A revised version of the standard is released
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from time to time; the most recent update appearing in2008.
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The2008 version is referred to as ISO/IEC 9075:2008, or simply as SQL:2008.
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The versions prior to that were SQL:2003, SQL:1999, and SQL-92. Each version
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from time to time; the most recent update appearing in2011.
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The2011 version is referred to as ISO/IEC 9075:2011, or simply as SQL:2011.
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The versions prior to that were SQL:2008, SQL:2003, SQL:1999, and SQL-92. Each version
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replaces the previous one, so claims of conformance to earlier
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versions have no official merit.
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<productname>PostgreSQL</productname> development aims for
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</para>
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<para>
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The<acronym>SQL:2008</acronym> and <acronym>SQL:2003</acronym>
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standard versionsare also split into a number
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Thestandard versions beginning with <acronym>SQL:2003</acronym>
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are also split into a number
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of parts. Each is known by a shorthand name. Note that these parts
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are not consecutively numbered.
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</para>
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<para>
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PostgreSQL supports most of the major features of SQL:2008. Out of
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PostgreSQL supports most of the major features of SQL:2011. Out of
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179 mandatory features required for full Core conformance,
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PostgreSQL conforms to at least 160. In addition, there is a long
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list of supported optional features. It might be worth noting that at
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the time of writing, no current version of any database management
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system claims full conformance to Core SQL:2008.
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system claims full conformance to Core SQL:2011.
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</para>
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<para>
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In the following two sections, we provide a list of those features
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that <productname>PostgreSQL</productname> supports, followed by a
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list of the features defined in <acronym>SQL:2008</acronym> which
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list of the features defined in <acronym>SQL:2011</acronym> which
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are not yet supported in <productname>PostgreSQL</productname>.
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Both of these lists are approximate: There might be minor details that
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are nonconforming for a feature that is listed as supported, and
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<title>Unsupported Features</title>
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<para>
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The following features defined in <acronym>SQL:2008</acronym> are not
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The following features defined in <acronym>SQL:2011</acronym> are not
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implemented in this release of
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<productname>PostgreSQL</productname>. In a few cases, equivalent
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functionality is available.

‎src/backend/catalog/sql_features.txt

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@@ -29,6 +29,8 @@ B125Routine language MUMPSNO
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B126Routine language PascalNO
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B127Routine language PL/INO
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B128Routine language SQLNO
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B211Module language Ada: VARCHAR and NUMERIC supportNO
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B221Routine language Ada: VARCHAR and NUMERIC supportNO
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E011Numeric data typesYES
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E011Numeric data types01INTEGER and SMALLINT data typesYES
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E011Numeric data types02REAL, DOUBLE PRECISION, and FLOAT data typesYES
@@ -176,6 +178,7 @@ F051Basic date and time07LOCALTIMEYES
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F051Basic date and time08LOCALTIMESTAMPYES
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F052Intervals and datetime arithmeticYES
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F053OVERLAPS predicateYES
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F054TIMESTAMP in DATE type precedence listNO
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F081UNION and EXCEPT in viewsYES
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F111Isolation levels other than SERIALIZABLEYES
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F111Isolation levels other than SERIALIZABLE01READ UNCOMMITTED isolation levelYES
@@ -228,6 +231,7 @@ F311Schema definition statement04CREATE VIEW: WITH CHECK OPTIONNO
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F311Schema definition statement05GRANT statementYES
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F312MERGE statementNO
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F313Enhanced MERGE statementNO
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F314MERGE statement with DELETE branchNO
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F321User authorizationYES
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F341Usage tablesNOno ROUTINE_*_USAGE tables
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F361Subprogram supportYES
@@ -236,6 +240,10 @@ F381Extended schema manipulation01ALTER TABLE statement: ALTER COLUMN clause
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F381Extended schema manipulation02ALTER TABLE statement: ADD CONSTRAINT clauseYES
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F381Extended schema manipulation03ALTER TABLE statement: DROP CONSTRAINT clauseYES
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F382Alter column data typeYES
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F383Set column not null clauseYES
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F384Drop identity property clauseNO
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F385Drop column generation expression clauseNO
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F386Set identity column generation clauseNO
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F391Long identifiersYES
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F392Unicode escapes in identifiersYES
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F393Unicode escapes in literalsYES
@@ -262,6 +270,7 @@ F461Named character setsNO
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F471Scalar subquery valuesYES
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F481Expanded NULL predicateYES
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F491Constraint managementYES
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F492Optional table constraint enforcementNO
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F501Features and conformance viewsYES
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F501Features and conformance views01SQL_FEATURES viewYES
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F501Features and conformance views02SQL_SIZING viewYES
@@ -327,6 +336,8 @@ F862<result offset clause> in subqueriesYES
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F863Nested <result offset clause> in <query expression>YES
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F864Top-level <result offset clause> in viewsYES
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F865<offset row count> in <result offset clause>YES
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F866FETCH FIRST clause: PERCENT optionNO
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F867FETCH FIRST clause: WITH TIES optionNO
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S011Distinct data typesNO
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S011Distinct data types01USER_DEFINED_TYPES viewNO
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S023Basic structured typesNO
@@ -414,6 +425,8 @@ T175Generated columnsNO
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T176Sequence generator supportNO
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T177Sequence generator support: simple restart optionNO
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T178Identity columns: simple restart optionNO
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T180System-versioned tablesNO
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T181Application-time period tablesNO
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T191Referential action RESTRICTYES
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T201Comparable data types for referential constraintsYES
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T211Basic trigger capabilityNO
@@ -445,13 +458,14 @@ T321Basic SQL-invoked routines04CALL statementNO
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T321Basic SQL-invoked routines05RETURN statementNO
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T321Basic SQL-invoked routines06ROUTINES viewYES
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T321Basic SQL-invoked routines07PARAMETERS viewYES
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T322Overloading of SQL-invoked functions and proceduresYES
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T322Declared data type attributesNO
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T323Explicit security for external routinesYES
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T324Explicit security for SQL routinesNO
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T325Qualified SQL parameter referencesNO
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T326Table functionsNO
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T331Basic rolesYES
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T332Extended rolesNOmostly supported
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T341Overloading of SQL-invoked functions and proceduresYES
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T351Bracketed SQL comments (/*...*/ comments)YES
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T431Extended grouping capabilitiesNO
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T432Nested and concatenated GROUPING SETSNO
@@ -460,9 +474,14 @@ T434GROUP BY DISTINCTNO
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T441ABS and MOD functionsYES
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T461Symmetric BETWEEN predicateYES
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T471Result sets return valueNO
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T472DESCRIBE CURSORNO
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T491LATERAL derived tableNO
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T495Combined data change and retrievalNOdifferent syntax
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T501Enhanced EXISTS predicateYES
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T502Period predicatesNO
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T511Transaction countsNO
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T521Named arguments in CALL statementNO
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T522Default values for IN parameters of SQL-invoked proceduresNO
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T541Updatable table referencesNO
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T551Optional key words for default syntaxYES
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T561Holdable locatorsNO
@@ -479,6 +498,8 @@ T615LEAD and LAG functionsYES
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T616Null treatment option for LEAD and LAG functionsNO
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T617FIRST_VALUE and LAST_VALUE functionYES
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T618NTH_VALUE functionNOfunction exists, but some options missing
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T619Nested window functionsNO
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T620WINDOW clause: GROUPS optionNO
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T621Enhanced numeric functionsYES
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T631IN predicate with one list elementYES
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T641Multiple column assignmentNOonly some syntax variants supported
@@ -648,3 +669,4 @@ X303XMLTable: column default optionNO
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X304XMLTable: passing a context itemNO
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X305XMLTable: initializing an XQuery variableNO
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X400Name and identifier mappingYES
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X410Alter column data type: XML typeYES

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