Microsoft
70-433 · Question #133
You have a column named TelephoneNumber that stores numbers as varchar(20). You need to write a query that returns the first three characters of a telephone number. Which expression should you use?
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Question
You have a column named TelephoneNumber that stores numbers as varchar(20). You need to write a query that returns the first three characters of a telephone number. Which expression should you use?
Options
- ALEFT(TelephoneNumber, 3)
- BSUBSTRING(TelephoneNumber, 3, 3)
- CSUBSTRING (TelephoneNumber, 3, 1)
- DCHARINDEX('[0-9][0-9][0-9]', TelephoneNumber, 3)
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