Converts data types into other data types based on specified parameters. If the conversion cannot be performed, CAST returns an error. To return a NULL value instead, use TRY_CAST.

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Syntax

CAST(<value> AS <type>)

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Parameters

ParameterDescriptionSupported input types
<value>The value to convert or an expression that results in a value to convert.Any
<type>The target data type (case-insensitive)Any

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Return Types

Same data type as <type>

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Example

The following example returns 1 as an integer:

SELECT CAST('1' AS INTEGER) as level;

Returns: 1

CAST can also be done by writing the format before the object, for example - SELECT DATE '2022-01-01' , SELECT TIMESTAMP '2022-01-01 01:02:03'.

CAST can also be done by using the :: operator. For more information, see :: operator for CAST.