SQL的特性，各种数据库的支持

To get a more in-depth comparison about some of the SQL features compared here, please visit Modern SQL

Feature	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Queries
Window functions	Yes	Yes(*)	Yes(*)	Yes	Yes(*)	Yes(*)	Yes(*)	No	No	No	Yes(*)
Common Table Expressions	Yes	Yes	Yes	Yes	Yes(*)	Yes(*)	Yes	No	Yes	No	Yes(*)
(*)	Yes	Yes	No	No	Yes(*)	No	Yes	No	Yes	No	Yes
Recursive Queries	Yes	Yes	Yes	Yes	Yes(*)	Yes	Yes	(Yes)(*)	Yes	No	Yes(*)
Row constructor(*)	No	Yes	Yes(*)	Yes	No	No	No	No	Yes	Yes	Yes
Filtered aggregates(*)	No	Yes(*)	No	No	No	No	No	No	Yes	No	Yes(*)
PIVOT Support	Yes	No(*)	Yes	No	No	No	No	No	No	No	No
GROUP BY .. ROLLUP	Yes	Yes(*)	Yes	Yes	Yes	Yes	No	No	No	Yes	No
GROUP BY .. GROUPING SETS(*)	Yes	Yes(*)	Yes	Yes	No	No	No	No	No	No	No
Temporal queries(*)	Yes	No	Yes(*)	Yes	No	Yes(*)	No	No	No	No	No
SELECT without a FROM clause	No	Yes	Yes	No	(Yes)(*)	(Yes)(*)	No	Yes	Yes(*)	No	Yes
(*)	Yes	Yes(*)	Yes	Yes	No	No	No	No	No	No	No
Aggregates for strings	Yes(*)	Yes	Yes(*)	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes
Tuple comparison	(Yes)(*)	Yes	No	Yes	Yes(*)	Yes(*)	No	(Yes)(*)	Yes	No	(Yes)(*)
Tuple updates	Yes	Yes(*)	No	Yes	No	No	No	Yes	Yes	No	Yes(*)
UPDATE with a join	No	Yes	Yes	No	Yes	Yes	No	No	No	No	No
ANSI date literals(*)	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	No
(*)	No	No	Yes	No	Yes	Yes	No	Yes	No	No	No
UNNEST(*)	No	Yes	No	Yes	No	No	No	No	Yes	No	No
Regular Expressions	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
(*)	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	No	No
(*)	Yes	Yes	No	No	Yes(*)	Yes(*)	Yes(*)	No	Yes	No	No
(*)	Yes	Yes	No	No	Yes(*)	Yes(*)	No	Yes	Yes(*)	No	No
Constraints	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Deferred constraints(*)	Yes	Yes	No	No	No	No	No	No	No	Yes(*)	Yes
Check constraints	Yes	Yes	Yes	Yes	No	Yes(*)	Yes	Yes	Yes	Yes	Yes
Check constraints with sub-query	No	No	No	No	No	No	Yes	No	No	No	No
Check constraints using custom functions(*)	No	Yes	Yes	Yes	No	No	Yes	No	No	No	No(*)
Exclusion constraints(*)	No	Yes	No	Yes(*)	No	No	No	No	No	No	No
Statement based constraint evaluation	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes	Yes
(*)	Yes	Yes	(Yes)(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
(*)	No	Yes	(Yes)(*)	No	Yes	Yes	Yes	Yes	Yes	No	Yes
Indexing	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Partial index(*)	Yes(*)	Yes	(Yes)(*)	No	No	No	No	No	No	No	Yes
(*)	Yes	Yes	Yes	Yes	Yes(*)	No	(Yes)(*)	Yes	Yes	No	Yes
Index on expression(*)	Yes	Yes	(No)(*)	(Yes)(*)	(No)(*)	(No)(*)	(Yes)(*)	No	No	No	Yes(*)
Index using a custom function(*)	Yes	Yes	No	Yes	No	No	No	No	No	No	No(*)
(*)	No	Yes(*)	Yes	Yes	No	No	No	No	No	No	No
(*)	Yes(*)	No	Yes	Yes	Yes	Yes	No	No	No	No	Yes
Duplicate NULL values in unique index(*)	No(*)	Yes	No	No	Yes(*)	Yes(*)	No	Yes	Yes	No	Yes
DML	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Writeable CTEs(*)	No	Yes(*)	Yes(*)	No	No	No	No	No	No	No	No
(*)	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes
(*)	Yes(*)	Yes	No	No	No	No	No	No	No	No	No
Read consistency during DML operations(*)	Yes	Yes	Yes	Yes	No	Yes(*)	Yes	Yes	Yes	Yes	Yes
Use target table in sub-queries(*)	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Yes	Yes	No(*)
(*)	Yes	Yes(*)	Yes	Yes	Yes(*)	Yes(*)	Yes	Yes	Yes	Yes(*)	No
(*)	Yes	Yes	No(*)	No	Yes(*)	No	No	No	No	No	No
RETURNING clause as a result set	No	Yes	Yes	No	No	No	Yes	No	No	No	No
(*)	Yes	No	No	No	No	No	No	No	No	No	No
Data Types(*)	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
User defined datatypes(*)	Yes	Yes	No(*)	Yes	No	No	No	No	Yes	No	No
Domains(*)	No	Yes	(Yes)(*)	No	No	No	Yes	Yes	Yes	No	No
Distinct types(*)	No	No	No	Yes	No	No	No	No	No	No	No
Arrays	No	Yes	No	No	No	No	(Yes)(*)	Yes	Yes	No	No
(*)	No	Yes	No	No	Yes	Yes	No	No	No	No	No
IP address	No	Yes	No	No	No	No	No	No	No	No	No
(*)	No(*)	Yes	No(*)	No(*)	No(*)	No(*)	Yes(*)	Yes	Yes	Yes	No
Interval	Yes	Yes	No	No	No	No	No	No	Yes	No	No
(*)	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No
(*)	No(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
(*)	Yes	Yes	Yes(*)	Yes	Yes(*)	Yes(*)	Yes	Yes	Yes	Yes	No
(*)	Yes	Yes	Yes(*)	No	No	No	No	Yes	Yes	No	No
Range types(*)	(No)(*)	Yes	No	No	No	No	No	No	No	No	No
DDL	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Transactional DDL(*)	No	Yes	Yes	Yes	No	No	Yes	No	No	No	Yes
(*)	Yes	No(*)	Yes	Yes	Yes(*)	Yes(*)	Yes	Yes	Yes	No	No
(*)	(Yes)(*)	Yes	Yes	No	No	Yes(*)	Yes(*)	Yes	Yes(*)	No	(Yes)(*)
Sequences	Yes	Yes	Yes	Yes	No	Yes(*)	Yes	Yes	Yes	Yes	No
(*)	Yes(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Synonyms	Yes	No	Yes	Yes	No	No	No	No	Yes(*)	Yes	No
(*)	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No
Partitioning	Yes	(Yes)(*)	Yes	Yes	Yes	Yes	No	No	No	No	No
Cascading DROP(*)	Yes	Yes	No	Yes	No(*)	No(*)	No	Yes	Yes	No	No
(*)	Yes	Yes	Yes	No	No	No	Yes(*)	No	No	No	No
(*)	(No)(*)	Yes	No	No	No	No	No	No	No	No	No
(*)	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes
(*)	Yes	No(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
(*)	No	No	No	No	Yes	Yes	Yes	Yes	Yes	No	No
(*)	Yes	Yes	Yes(*)	Yes(*)	No	No	No	No	No	No	No
(*)	Yes	No	Yes	No	No	No	No	No	No	No	No
(*)	Yes	No	Yes	Yes	No	No	No	No	No	No	No
Temporary Tables	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
(*)	Yes	No	No	Yes	No	No	Yes	No	Yes	No	No
(*)	No	No	Yes	No	No	No	No	Yes	No	No	No
(*)	No	Yes	Yes	No	Yes	Yes	No	Yes	Yes	No	Yes
Use a temporary table twice in a single query	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Yes	No(*)	Yes
Programming	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
(*)	Yes	Yes(*)	Yes	Yes	Yes	Yes	Yes	No	Yes	No(*)	No(*)
Table functions(*)	Yes	Yes	Yes	Yes	No	No	Yes	No	Yes	No	No(*)
(*)	Yes	Yes	No(*)	No	No	No	No	No	Yes	No	No
(*)	Yes(*)	Yes	No	Yes	No	No	No	No	Yes	No	No
(*)	No(*)	Yes	No	No	No	No	No	No	No	No	No
(*)	Yes	Yes	Yes	Yes	No	No	No	No(*)	Yes	Yes	No
(*)	Yes	Yes	No	Yes	Yes	Yes	Yes	No(*)	Yes	Yes	Yes
(*)	Yes	Yes	Yes	No	No	No	Yes	No	No	No	No
(*)	Yes	Yes	(No)(*)	Yes	Yes	Yes	Yes	No(*)	Yes	Yes	Yes
(*)	Yes	Yes	No(*)	Yes	No	No	Yes	No	No	No	No
(*)	Yes	Yes	Yes	No	No	No	Yes	No	No	No	No
(*)	Yes	Yes	Yes	Yes	No	No	Yes	No	Yes	Yes	Yes(*)
Built-in scheduler	Yes	No	Yes	Yes	Yes	Yes	No	No	No	No	No
Views	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
Updateable Views	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No
(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No
Triggers on views	Yes	Yes	Yes	Yes	No	No	Yes	No	Yes	No	Yes
Views with derived tables(*)	Yes	Yes	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes
JOINs and Operators	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
CROSS JOIN	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
FULL OUTER JOIN	Yes	Yes	Yes	Yes	No	No	Yes	No	Yes	Yes	No
LATERAL JOIN	Yes(*)	Yes	(Yes)(*)	Yes	No	No	No	No	Yes	No	No
JOIN ... USING (...)(*)	Yes	Yes	No	No	Yes	Yes	Yes	No	Yes	Yes	Yes
JOINs using tuple comparison(*)	Yes	Yes	No	Yes	Yes	Yes	No	Yes	Yes	No	No
INTERSECT	(Yes)(*)	Yes	(Yes)(*)	Yes	No	Yes(*)	No	(Yes)(*)	Yes	Yes	(Yes)(*)
EXCEPT	(Yes)(*)	Yes	(Yes)(*)	Yes	No	Yes(*)	No	(Yes)(*)	Yes	Yes	(Yes)(*)
ORDER BY ... NULLS LAST	Yes	Yes	No	Yes	No	No	Yes	Yes	Yes	Yes	No
IS DISTINCT FROM	No	Yes	No	(Yes)(*)	Yes(*)	Yes(*)	Yes	No	Yes	No	No
BETWEEN SYMMETRIC	No	Yes	No	No	No	No	No	No	Yes	No	No
OVERLAPS(*)	(Yes)(*)	Yes	No	Yes(*)	No	No	No	No	Yes	No	No(*)
Other	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
	(Yes)(*)	(Yes)(*)	Yes	No	Yes	Yes	(Yes)(*)	Yes	Yes	No	Yes
Schemas	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes	No
INFORMATION_SCHEMA(*)	No	Yes	Yes	No	Yes	Yes	No	Yes	Yes	No	No
NoSQL Features	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
(*)	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No
(*)	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No
XQuery	Yes	No	Yes	Yes	No	No	No	No	No	No	No
(*)	Yes(*)	Yes	Yes(*)	(Yes)(*)	Yes(*)	Yes(*)	No	No	No	No(*)	Yes(*)
(*)	Yes	Yes(*)	(Yes)(*)	Yes	(No)(*)	No(*)	No	No	No	No	(Yes)(*)
Key/Value storage	No	Yes	No	No	No(*)	No	No	No(*)	No	No	No
Security	Oracle	Postgres	SQL Server	IBM DB2	MySQL	MariaDB	Firebird	H2	HSQLDB	Derby	SQLite
User groups / Roles	Yes	Yes	Yes	Yes	Yes(*)	Yes(*)	Yes	Yes	Yes	Yes	No
(*)	Yes	Yes(*)	Yes	Yes	No	No	No	No	No	No	No
(*)	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No