Validating date during insert operation in pl sql with examples
The given time zone offset will be assumed to be daylight saving time (DST) aware and adjusted for any given datetime that is in the DST period.
For datetimeoffset type, both UTC and local (to the persistent or converted time zone offset) datetime value will be validated during insert, update, arithmetic, convert, or assign operations.
When you convert to date and time data types, SQL Server rejects all values it cannot recognize as dates or times.
For information about using the CAST and CONVERT functions with date and time data, see CAST and CONVERT (Transact-SQL) This section describes what occurs when a datetimeoffset data type is converted to other date and time data types.
To convert a date to a corresponding datetimeoffset value in a target time zone, see AT TIME ZONE (Transact-SQL).
The ANSI and ISO 8601 Compliance sections of the date and time topics apply to datetimeoffset.
The data is stored in the database and processed, compared, sorted, and indexed in the server as in UTC.
SQL was initially developed by IBM in the early 1970s (Date 1986).
mm is two digits, ranging from 00 to 59, that represent the minute.
ss is two digits, ranging from 00 to 59, that represent the second. The following table lists the supported ISO 8601 string literal formats for datetimeoffset.
The initial version, called (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM’s quasi-relational database management system, System R.
Then in the late 1970s, Relational Software Inc., which is now Oracle Corporation, introduced the first commercially available implementation of SQL, Oracle V2 for VAX computers.