October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Converting Date Formats
The conversion of dates takes place for any number of reasons. Conversions are mainly used to alter the data type of values defined as DATETIME values.
Typical reasons for date conversions are
To compare date values of different data types
To format a date value as a character string
To convert a character string into a date format
 | The ANSI CAST operator is used to convert data types into other data types. The basic syntax is |
CAST ( EXPRESSION AS NEW_DATA_TYPE )
Individual implementations of SQL may use another function instead of CAST. For example, in Oracle, the TO_DATE function is used to convert a character string to ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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