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CAST Function

The CAST function is used to convert an expression from one data type to another. It is useful for ensuring that data is in the correct format for operations or output.

Example: Using CAST

SELECT Name, CAST(BirthDate AS VARCHAR(10)) AS BirthDateText
FROM FreedomFighters;

Output:

Converts the BirthDate column to a text representation.

Do's and Don'ts

Do's

  • Use CAST to convert data types explicitly and avoid errors.
  • Ensure the target data type can represent the source data accurately.

Don'ts

  • Don't use CAST unnecessarily; avoid conversions unless needed.
  • Don't forget to handle exceptions when casting may fail.
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