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CHANGE_DATA_TYPE

PDFRSS

Changes the data type of an existing column.

If a column value can’t be converted to the new type, it will be replaced with NULL. This can happen when a string column is converted to an integer column. For example, string "123" will become integer 123, but string "ABC" cannot become a number, so it will be replaced with a NULL value.

Parameters

• sourceColumn – The name of an existing column.

• columnDataType – New type of the column. The following data types are supported:

  • byte: 1-byte signed integer numbers. The range of numbers is from -128 to 127.

  • short: 2-byte signed integer numbers. The range of numbers is from -32768 to 32767.

  • int: 4-byte signed integer numbers. The range of numbers is from -2147483648 to 2147483647.

  • long: 8-byte signed integer numbers. The range of numbers is from -9223372036854775808 to 9223372036854775807.

  • float: 4-byte single-precision floating point numbers.

  • double: 8-byte double-precision floating point numbers.

  • decimal: Signed decimal numbers with up to 38 digits total and 18 digits after the decimal point.

  • string: Character string values.

  • boolean: Boolean type has one of two possible values: `true` and `false` or `yes` and `no`.

  • timestamp: Values comprising fields year, month, day, hour, minute, and second.

  • date: Values comprising fields year, month and day.

Example

{
    "RecipeAction": {
        "Operation": "CHANGE_DATA_TYPE",
        "Parameters": {
            "sourceColumn": "columnName",
            "columnDataType": "boolean"
        }
    } 
 }