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SQL: CURDATE() or CURRENT DATE CURTIME() or CURRENT TIME GETDATE() or GETUTCDATE() NOW() or CURRENT TIMESTAMP SYSDATE() 3 ms 1 January 1753 to 31 December 9999 (*) 60 s
The SQL function EXTRACT can be used for extracting a single field (seconds, for instance) of a datetime or interval value. The current system date / time of the database server can be called by using functions like CURRENT_DATE , CURRENT_TIMESTAMP , LOCALTIME , or LOCALTIMESTAMP .
The function GetDate() is used to get the system date and time, a specific RDBMS could either use another function name, or get this information by another way. Several RDBMS (Db2, MySQL) do not support that the same trigger can be attached to more than one operation ( INSERT , DELETE , UPDATE ).
This list includes SQL reserved words – aka SQL reserved keywords, [1] [2] as the SQL:2023 specifies and some RDBMSs have added. Reserved words in SQL and related products In SQL:2023 [ 3 ]
Keywords for flow control in Transact-SQL include BEGIN and END, BREAK, CONTINUE, GOTO, IF and ELSE, RETURN, WAITFOR, and WHILE.. IF and ELSE allow conditional execution. This batch statement will print "It is the weekend" if the current date is a weekend day, or "It is a weekday" if the current date is a weekday.
To store the life of John Doe in a current (non-temporal) database we use a table person (name, address). (In order to simplify, name is defined as the primary key of person.) John's father officially reported his birth on 1975-04-04. On this date a Smallville official inserted the following entry in the database: Person(John Doe, Smallville ...
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Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft.As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network (including the Internet).