MySQL Delete
Use this activity to execute an SQL Delete to delete the record based on the delete statement.
Input Settings
The Input Settings tab has the following fields:
| Field | Description |
|---|---|
| Delete Statement | A SQL statement used to delete the record from the table. You can construct prepared SQL queries by using substitution variables (or parameters) of the form
?<fieldname> in the delete query statement.
Each substitution variable identifies an input parameter whose mapped value is substituted into the substitution variable at runtime. You can reuse the substitution variable for the same input parameter elsewhere in the query. The type information for the input parameters used in the WHERE clause, is fetched from the database using the selected connection for the entered delete query. Similarly, input fields on the
Input tab of the activity are also automatically generated.
The following example represents a typical delete query:
Delete from advisor where i_id=?i_id;For the above delete query, there will be no output field and input field is generated for i_id (VARCHAR). Also the mapped value for the field name is substituted into the substitution variable ?i_id. |
| Manually Configure Metadata |
If you see an error for a valid SQL statement in the Query field, set the Manually Configure Metadata field to True to fetch table metadata manually using simple SELECT statement. For more information, see Manually Configuring Metadata. |
| Fields | Displays the database column metadata. |
Input
This tab displays the input schema of the activity in a tree structure format. The information in the schema varies based on the delete query provided. The fields that were selected on the Input Settings tab will be available in the schema. You can either hard code the values or map them to a field from the output of a preceding activity in the flow using the Mapper.