FineDataLink Version
Functional Change
3.7
Added a Field Setting operator in the Overview of Data
Transformation node, allowing you to select and rename
fields in the data flow, as well as convertiong data types
of these fields.
4.1.5.3
Supported batch deletion and restoration of fields. Fordetails, see the "Field Setting" section.
Optimized the interactive experience.
4.1.5.5
The Field Setting operator allows you to perform the following operations on input data:
Delete some fields.
Rename fields.
Change the data type.
This document uses the example in the Data Association document to illustrate the Field Setting function.
Add a Field Setting operator between the Left Join and DB Table Output operators. Connect the Field Setting operator with the Left Join and DB Table Output operators, as shown in the following figure.
Click the Field Setting operator to view table fields after a left join, as shown in the following figure.
This section takes the following operations as examples to illustrate the Field Setting function.
Delete the Name1 field.
Rename the Name field Student_Name.
Change the data types of English_Score and Math_Score to int.
The following figure shows the Field Setting page where these operations are finished.
The following table describes the setting items.
Setting Item
Description
Checkbox
You can tick fields and perform batch deletion and restoration, as shown in the following
figure.
Field Name
It lists output field names, which are editable.
The output field name should meet the following requirements.
The field name cannot be empty.
The length must be within 30 characters.
The field name can only consist of letters (from a to z, which is case-sensitive), digits (from 0 to 9), underscores (_), and Chinese characters.
Spaces are not allowed.
The field name cannot be duplicated with other valid field names.
Type
You can select from the following data types.
int
long
float
double
date
timestamp
binary
boolean
varchar
Change Record
It displays the modification type. You can filter Modified and Unmodified fields.
Time Format
The Time Format column is displayed only when the field data is of the time type.
Options in the drop-down list include:
1）yyyy-MM-dd HH:mm:ss
It is the default time format of fields whose data type is changed from varchar to timestamp.
It is the default time format of fields whose data type is changed from timestamp to varchar.
In the format, yyyy represents a four-digit year, MM represents a month, dd represents a day, HH represents a 24-hour format hour, mm represents a minute, ss represents a
second, and SS represents a millisecond.
2）yyyy-MM-dd
It is the default time format of fields whose data type is changed from varchar to date.
It is the default time format of fields whose data type is changed from date to varchar.
3）yyyyMMddHHmmss
4）yyyyMMdd
Click the DB Table Output operator, set the target table to Auto Created Table, and name it Test_Score, as shown in the following figure.
Click Save in the upper right corner to save the design in the Data Transformation node, as shown in the following figure.
Go back to the Date Development page and click Run in the upper right corner, as shown in the following figure. After successful execution, a message indicating successful execution will be displayed in Log.
The data in the Test_Score table is shown in the following figure.
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