March 2000
Beginner
464 pages
9h 17m
English
Content preview from Sams Teach Yourself SQL in 24 Hours, Second Edition
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Hour 11, "Restructuring the Appearance of Data"
Quiz Answers
Match the Descriptions with the possible Functions.
| DESCRIPTIONS | ANSWERS | |
|---|---|---|
| a. | Used to select a portion of a character string. | SUBSTR |
| b. | Used to trim characters from either the right or left of a string. | LTRIM/RTRIM |
| c. | Used to change all letters to lowercase. | LOWER |
| d. | Used to find the length of a string. | LENGTH |
| e. | Used to combine strings. (CONCATENATION is the same as ||.) | CONCATENATION |
| 1: | True or false: Using functions in a select statement to restructure the appearance of data in output will also affect the way the data is stored in the database. |
| A1: | True. |
| 2: | True or false: The outermost function is always resolved first when functions are embedded within other functions in a query. |
| A2: | False. The innermost ... |
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