D.1. Supported Features

Note: At present, this section is just taken from PostgreSQL documentation and is subject to revision for Postgres-XC.

IdentifierPackageDescriptionComment
B012 Embedded C 
B021 Direct SQL 
E011CoreNumeric data types 
E011-01CoreINTEGER and SMALLINT data types 
E011-02CoreREAL, DOUBLE PRECISION, and FLOAT data types 
E011-03CoreDECIMAL and NUMERIC data types 
E011-04CoreArithmetic operators 
E011-05CoreNumeric comparison 
E011-06CoreImplicit casting among the numeric data types 
E021CoreCharacter data types 
E021-01CoreCHARACTER data type 
E021-02CoreCHARACTER VARYING data type 
E021-03CoreCharacter literals 
E021-04CoreCHARACTER_LENGTH functiontrims trailing spaces from CHARACTER values before counting
E021-05CoreOCTET_LENGTH function 
E021-06CoreSUBSTRING function 
E021-07CoreCharacter concatenation 
E021-08CoreUPPER and LOWER functions 
E021-09CoreTRIM function 
E021-10CoreImplicit casting among the character string types 
E021-11CorePOSITION function 
E021-12CoreCharacter comparison 
E031CoreIdentifiers 
E031-01CoreDelimited identifiers 
E031-02CoreLower case identifiers 
E031-03CoreTrailing underscore 
E051CoreBasic query specification 
E051-01CoreSELECT DISTINCT 
E051-02CoreGROUP BY clause 
E051-04CoreGROUP BY can contain columns not in <select list> 
E051-05CoreSelect list items can be renamed 
E051-06CoreHAVING clause 
E051-07CoreQualified * in select list 
E051-08CoreCorrelation names in the FROM clause 
E051-09CoreRename columns in the FROM clause 
E061CoreBasic predicates and search conditions 
E061-01CoreComparison predicate 
E061-02CoreBETWEEN predicate 
E061-03CoreIN predicate with list of values 
E061-04CoreLIKE predicate 
E061-05CoreLIKE predicate ESCAPE clause 
E061-06CoreNULL predicate 
E061-07CoreQuantified comparison predicate 
E061-08CoreEXISTS predicate 
E061-09CoreSubqueries in comparison predicate 
E061-11CoreSubqueries in IN predicate 
E061-12CoreSubqueries in quantified comparison predicate 
E061-13CoreCorrelated subqueries 
E061-14CoreSearch condition 
E071CoreBasic query expressions 
E071-01CoreUNION DISTINCT table operator 
E071-02CoreUNION ALL table operator 
E071-03CoreEXCEPT DISTINCT table operator 
E071-05CoreColumns combined via table operators need not have exactly the same data type 
E071-06CoreTable operators in subqueries 
E081CoreBasic Privileges 
E081-01CoreSELECT privilege 
E081-02CoreDELETE privilege 
E081-03CoreINSERT privilege at the table level 
E081-04CoreUPDATE privilege at the table level 
E081-05CoreUPDATE privilege at the column level 
E081-06CoreREFERENCES privilege at the table level 
E081-07CoreREFERENCES privilege at the column level 
E081-08CoreWITH GRANT OPTION 
E081-09CoreUSAGE privilege 
E081-10CoreEXECUTE privilege 
E091CoreSet functions 
E091-01CoreAVG 
E091-02CoreCOUNT 
E091-03CoreMAX 
E091-04CoreMIN 
E091-05CoreSUM 
E091-06CoreALL quantifier 
E091-07CoreDISTINCT quantifier 
E101CoreBasic data manipulation 
E101-01CoreINSERT statement 
E101-03CoreSearched UPDATE statement 
E101-04CoreSearched DELETE statement 
E111CoreSingle row SELECT statement 
E121CoreBasic cursor support 
E121-01CoreDECLARE CURSOR 
E121-02CoreORDER BY columns need not be in select list 
E121-03CoreValue expressions in ORDER BY clause 
E121-04CoreOPEN statement 
E121-06CorePositioned UPDATE statement 
E121-07CorePositioned DELETE statement 
E121-08CoreCLOSE statement 
E121-10CoreFETCH statement implicit NEXT 
E121-17CoreWITH HOLD cursors 
E131CoreNull value support (nulls in lieu of values) 
E141CoreBasic integrity constraints 
E141-01CoreNOT NULL constraints 
E141-02CoreUNIQUE constraints of NOT NULL columns 
E141-03CorePRIMARY KEY constraints 
E141-04CoreBasic FOREIGN KEY constraint with the NO ACTION default for both referential delete action and referential update action 
E141-06CoreCHECK constraints 
E141-07CoreColumn defaults 
E141-08CoreNOT NULL inferred on PRIMARY KEY 
E141-10CoreNames in a foreign key can be specified in any order 
E151CoreTransaction support 
E151-01CoreCOMMIT statement 
E151-02CoreROLLBACK statement 
E152CoreBasic SET TRANSACTION statement 
E152-01CoreSET TRANSACTION statement: ISOLATION LEVEL SERIALIZABLE clause 
E152-02CoreSET TRANSACTION statement: READ ONLY and READ WRITE clauses 
E161CoreSQL comments using leading double minus 
E171CoreSQLSTATE support 
F021CoreBasic information schema 
F021-01CoreCOLUMNS view 
F021-02CoreTABLES view 
F021-03CoreVIEWS view 
F021-04CoreTABLE_CONSTRAINTS view 
F021-05CoreREFERENTIAL_CONSTRAINTS view 
F021-06CoreCHECK_CONSTRAINTS view 
F031CoreBasic schema manipulation 
F031-01CoreCREATE TABLE statement to create persistent base tables 
F031-02CoreCREATE VIEW statement 
F031-03CoreGRANT statement 
F031-04CoreALTER TABLE statement: ADD COLUMN clause 
F031-13CoreDROP TABLE statement: RESTRICT clause 
F031-16CoreDROP VIEW statement: RESTRICT clause 
F031-19CoreREVOKE statement: RESTRICT clause 
F032 CASCADE drop behavior 
F033 ALTER TABLE statement: DROP COLUMN clause 
F034 Extended REVOKE statement 
F034-01 REVOKE statement performed by other than the owner of a schema object 
F034-02 REVOKE statement: GRANT OPTION FOR clause 
F034-03 REVOKE statement to revoke a privilege that the grantee has WITH GRANT OPTION 
F041CoreBasic joined table 
F041-01CoreInner join (but not necessarily the INNER keyword) 
F041-02CoreINNER keyword 
F041-03CoreLEFT OUTER JOIN 
F041-04CoreRIGHT OUTER JOIN 
F041-05CoreOuter joins can be nested 
F041-07CoreThe inner table in a left or right outer join can also be used in an inner join 
F041-08CoreAll comparison operators are supported (rather than just =) 
F051CoreBasic date and time 
F051-01CoreDATE data type (including support of DATE literal) 
F051-02CoreTIME data type (including support of TIME literal) with fractional seconds precision of at least 0 
F051-03CoreTIMESTAMP data type (including support of TIMESTAMP literal) with fractional seconds precision of at least 0 and 6 
F051-04CoreComparison predicate on DATE, TIME, and TIMESTAMP data types 
F051-05CoreExplicit CAST between datetime types and character string types 
F051-06CoreCURRENT_DATE 
F051-07CoreLOCALTIME 
F051-08CoreLOCALTIMESTAMP 
F052Enhanced datetime facilitiesIntervals and datetime arithmetic 
F053 OVERLAPS predicate 
F081CoreUNION and EXCEPT in views 
F111 Isolation levels other than SERIALIZABLE 
F111-01 READ UNCOMMITTED isolation level 
F111-02 READ COMMITTED isolation level 
F111-03 REPEATABLE READ isolation level 
F131CoreGrouped operations 
F131-01CoreWHERE, GROUP BY, and HAVING clauses supported in queries with grouped views 
F131-02CoreMultiple tables supported in queries with grouped views 
F131-03CoreSet functions supported in queries with grouped views 
F131-04CoreSubqueries with GROUP BY and HAVING clauses and grouped views 
F131-05CoreSingle row SELECT with GROUP BY and HAVING clauses and grouped views 
F171 Multiple schemas per user 
F191Enhanced integrity managementReferential delete actions 
F200 TRUNCATE TABLE statement 
F201CoreCAST function 
F221CoreExplicit defaults 
F222 INSERT statement: DEFAULT VALUES clause 
F231 Privilege tables 
F231-01 TABLE_PRIVILEGES view 
F231-02 COLUMN_PRIVILEGES view 
F231-03 USAGE_PRIVILEGES view 
F251 Domain support 
F261CoreCASE expression 
F261-01CoreSimple CASE 
F261-02CoreSearched CASE 
F261-03CoreNULLIF 
F261-04CoreCOALESCE 
F262 Extended CASE expression 
F271 Compound character literals 
F281 LIKE enhancements 
F302 INTERSECT table operator 
F302-01 INTERSECT DISTINCT table operator 
F302-02 INTERSECT ALL table operator 
F304 EXCEPT ALL table operator 
F311-01CoreCREATE SCHEMA 
F311-02CoreCREATE TABLE for persistent base tables 
F311-03CoreCREATE VIEW 
F311-05CoreGRANT statement 
F321 User authorization 
F361 Subprogram support 
F381 Extended schema manipulation 
F381-01 ALTER TABLE statement: ALTER COLUMN clause 
F381-02 ALTER TABLE statement: ADD CONSTRAINT clause 
F381-03 ALTER TABLE statement: DROP CONSTRAINT clause 
F382 Alter column data type 
F383 Set column not null clause 
F391 Long identifiers 
F392 Unicode escapes in identifiers 
F393 Unicode escapes in literals 
F401 Extended joined table 
F401-01 NATURAL JOIN 
F401-02 FULL OUTER JOIN 
F401-04 CROSS JOIN 
F402 Named column joins for LOBs, arrays, and multisets 
F411Enhanced datetime facilitiesTime zone specificationdifferences regarding literal interpretation
F421 National character 
F431 Read-only scrollable cursors 
F431-01 FETCH with explicit NEXT 
F431-02 FETCH FIRST 
F431-03 FETCH LAST 
F431-04 FETCH PRIOR 
F431-05 FETCH ABSOLUTE 
F431-06 FETCH RELATIVE 
F441 Extended set function support 
F442 Mixed column references in set functions 
F471CoreScalar subquery values 
F481CoreExpanded NULL predicate 
F491Enhanced integrity managementConstraint management 
F501CoreFeatures and conformance views 
F501-01CoreSQL_FEATURES view 
F501-02CoreSQL_SIZING view 
F501-03CoreSQL_LANGUAGES view 
F502 Enhanced documentation tables 
F502-01 SQL_SIZING_PROFILES view 
F502-02 SQL_IMPLEMENTATION_INFO view 
F502-03 SQL_PACKAGES view 
F531 Temporary tables 
F555Enhanced datetime facilitiesEnhanced seconds precision 
F561 Full value expressions 
F571 Truth value tests 
F591 Derived tables 
F611 Indicator data types 
F641 Row and table constructors 
F651 Catalog name qualifiers 
F661 Simple tables 
F672 Retrospective check constraints 
F690 Collation supportbut no character set support
F692 Extended collation support 
F701Enhanced integrity managementReferential update actions 
F711 ALTER domain 
F731 INSERT column privileges 
F761 Session management 
F762 CURRENT_CATALOG 
F763 CURRENT_SCHEMA 
F771 Connection management 
F781 Self-referencing operations 
F791 Insensitive cursors 
F801 Full set function 
F850 Top-level <order by clause> in <query expression> 
F851 <order by clause> in subqueries 
F852 Top-level <order by clause> in views 
F855 Nested <order by clause> in <query expression> 
F856 Nested <fetch first clause> in <query expression> 
F857 Top-level <fetch first clause> in <query expression> 
F858 <fetch first clause> in subqueries 
F859 Top-level <fetch first clause> in views 
F860 <fetch first row count> in <fetch first clause> 
F861 Top-level <result offset clause> in <query expression> 
F862 <result offset clause> in subqueries 
F863 Nested <result offset clause> in <query expression> 
F864 Top-level <result offset clause> in views 
F865 <offset row count> in <result offset clause> 
S071Enhanced object supportSQL paths in function and type name resolution 
S092 Arrays of user-defined types 
S095 Array constructors by query 
S096 Optional array bounds 
S098 ARRAY_AGG 
S111Enhanced object supportONLY in query expressions 
S201 SQL-invoked routines on arrays 
S201-01 Array parameters 
S201-02 Array as result type of functions 
S211Enhanced object supportUser-defined cast functions 
T031 BOOLEAN data type 
T071 BIGINT data type 
T121 WITH (excluding RECURSIVE) in query expression 
T122 WITH (excluding RECURSIVE) in subquery 
T131 Recursive query 
T132 Recursive query in subquery 
T141 SIMILAR predicate 
T151 DISTINCT predicate 
T152 DISTINCT predicate with negation 
T171 LIKE clause in table definition 
T172 AS subquery clause in table definition 
T173 Extended LIKE clause in table definition 
T191Enhanced integrity managementReferential action RESTRICT 
T201Enhanced integrity managementComparable data types for referential constraints 
T211-01Active database, Enhanced integrity managementTriggers activated on UPDATE, INSERT, or DELETE of one base table 
T211-02Active database, Enhanced integrity managementBEFORE triggers 
T211-03Active database, Enhanced integrity managementAFTER triggers 
T211-04Active database, Enhanced integrity managementFOR EACH ROW triggers 
T211-05Active database, Enhanced integrity managementAbility to specify a search condition that must be true before the trigger is invoked 
T211-07Active database, Enhanced integrity managementTRIGGER privilege 
T212Enhanced integrity managementEnhanced trigger capability 
T213 INSTEAD OF triggers 
T231 Sensitive cursors 
T241 START TRANSACTION statement 
T271 Savepoints 
T281 SELECT privilege with column granularity 
T312 OVERLAY function 
T321-01CoreUser-defined functions with no overloading 
T321-03CoreFunction invocation 
T321-06CoreROUTINES view 
T321-07CorePARAMETERS view 
T323 Explicit security for external routines 
T331 Basic roles 
T341 Overloading of SQL-invoked functions and procedures 
T351 Bracketed SQL comments (/*...*/ comments) 
T441 ABS and MOD functions 
T461 Symmetric BETWEEN predicate 
T501 Enhanced EXISTS predicate 
T551 Optional key words for default syntax 
T581 Regular expression substring function 
T591 UNIQUE constraints of possibly null columns 
T614 NTILE function 
T615 LEAD and LAG functions 
T617 FIRST_VALUE and LAST_VALUE function 
T621 Enhanced numeric functions 
T631CoreIN predicate with one list element 
T651 SQL-schema statements in SQL routines 
T655 Cyclically dependent routines 
X010 XML type 
X011 Arrays of XML type 
X016 Persistent XML values 
X020 XMLConcat 
X031 XMLElement 
X032 XMLForest 
X034 XMLAgg 
X035 XMLAgg: ORDER BY option 
X036 XMLComment 
X037 XMLPI 
X040 Basic table mapping 
X041 Basic table mapping: nulls absent 
X042 Basic table mapping: null as nil 
X043 Basic table mapping: table as forest 
X044 Basic table mapping: table as element 
X045 Basic table mapping: with target namespace 
X046 Basic table mapping: data mapping 
X047 Basic table mapping: metadata mapping 
X048 Basic table mapping: base64 encoding of binary strings 
X049 Basic table mapping: hex encoding of binary strings 
X050 Advanced table mapping 
X051 Advanced table mapping: nulls absent 
X052 Advanced table mapping: null as nil 
X053 Advanced table mapping: table as forest 
X054 Advanced table mapping: table as element 
X055 Advanced table mapping: target namespace 
X056 Advanced table mapping: data mapping 
X057 Advanced table mapping: metadata mapping 
X058 Advanced table mapping: base64 encoding of binary strings 
X059 Advanced table mapping: hex encoding of binary strings 
X060 XMLParse: Character string input and CONTENT option 
X061 XMLParse: Character string input and DOCUMENT option 
X070 XMLSerialize: Character string serialization and CONTENT option 
X071 XMLSerialize: Character string serialization and DOCUMENT option 
X072 XMLSerialize: Character string serialization 
X090 XML document predicate 
X120 XML parameters in SQL routines 
X121 XML parameters in external routines 
X400 Name and identifier mapping 
X410 Alter column data type: XML type