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    Categories: Conversion

    CONVERT_FROM

    Converts a binary string from the given data type to a Dremio type.

    Syntax

    CONVERT_FROM(binary_value value_to_convert, data_type name_of_type) → varies

    • binary_value: The binary string to convert to a Dremio data type.
    • data_type: The data type of the specified binary string.

    Examples

    Returns a LIST from the specified JSON. 
    SELECT CONVERT_FROM('["apple", "strawberry", "banana"]', 'json')
-- ['apple', 'strawberry', 'banana']
    Returns a STRUCT from the specified JSON. 
    SELECT CONVERT_FROM('{"name":"Gnarly", "age":7, "car":null}', 'json')
-- {"name:"Gnarly","age":7}

    Usage Notes

    You can convert from binary values that are in these data formats:

    • BIGINT_BE
    • BIGINT_HADOOPV
    • BIGINT
    • BOOLEAN_BYTE
    • DATE_EPOCH_BE
    • DATE_EPOCH
    • DOUBLE_BE
    • DOUBLE
    • FLOAT_BE
    • FLOAT
    • INT_BE
    • INT_HADOOPV
    • INT
    • JSON
    • TIME_EPOCH_BE
    • TIME_EPOCH
    • TIMESTAMP_EPOCH_BE
    • TIMESTAMP_EPOCH
    • TIMESTAMP_IMPALA_LOCALTIMEZONE
    • TIMESTAMP_IMPALA
    • UTF8