In SQL Server, the value of the string to a numeric value may be three types of methods.
1. Cast () method.
select cast('6.0' as decimal(6, 2)); -- 6.00
2. convert () method.
select convert(decimal(6, 2), '100'); -- 100.00
3. The method uses the value 0 added.
select '233' + 0; -- 233
The above three methods should pay particular attention to the type of values are converted at the conversion type, the problem may occur because of various cast failure, such as decimal digits / format mismatch error caused.
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