Help Center/ MapReduce Service/ Component Operation Guide (LTS)/ Using Loader/ Loader Operator Help/ Loader Conversion Operators/ Long Date Conversion
Updated on 2024-10-09 GMT+08:00
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Long Date Conversion

Overview

The Long Date Conversion operator performs long integer and date conversion.

Input and Output

  • Input: fields to be converted
  • Output: new fields

Parameter Description

Table 1 Operator parameter description

Parameter

Description

Type

Mandatory

Default Value

convert type

Types of long integer and date conversion:

  • long to date: converts long integers to date.
  • long to time: converts long integers to time.
  • long to timestamp: converts long integers to timestamp.
  • date to long: converts date to long integers.
  • time to long: converts time to long integers.
  • timestamp to long: converts timestamp to long integers.

enum

Yes

long to date

input field name

Name of input fields to be converted. Set this parameter to the names of fields generated in the previous conversion step.

string

Yes

None

output field name

Names of output fields.

string

Yes

None

field unit

Unit of a long integer field. According to convert type, the value is an input field or generated field. The options are second and millisecond.

enum

Yes

second

output field type

Output field type. The options are BIGINT, DATE, TIME, and TIMESTAMP.

enum

Yes

BIGINT

date format

Time field format, for example, yyyyMMdd HH:mm:ss.

string

No

None

Data Processing Rule

  • If the original data includes null values, no conversion is performed.
  • If the number of input field columns is greater than the number of field columns actually included in the original data, all data becomes dirty data.
  • If a type conversion error occurs, the current data is saved as dirty data.

Example

Use the CSV File Input operator to generate fields A and B.

The following figure shows the source file.

Configure the Long Date Conversion operator to generate four new fields C, D, E, and F. Their types are DATE, TIME, TIMESTAMP, and BIGINT, respectively.

The following figure shows the output of the conversion.