March 2000
Beginner
464 pages
9h 17m
English
Content preview from Sams Teach Yourself SQL in 24 Hours, Second Edition
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Q&A
| Q1: | Are all the functions in the ANSI standard? |
| A1: | No, not all functions are exactly ANSI SQL. Functions, like data types, are often implementation-dependent. Several examples of functions from selected implementations are included. However, because so many implementations use similar functions (although they may slightly differ), check your particular implementation for available functions and their usage. |
| Q2: | Is the data actually changed in the database when using functions? |
| A2: | No. Data is not changed in the database when using functions. Functions are typically used in queries to manipulate the output's appearance. |
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