In this article

Overview

You can use this Snap to execute an SQL delete with the specified properties.

mysql-delete-overview.png

Snap Type

The MySQL Delete Snap is a Write-type Snap.

Prerequisites

None.

Support for Ultra Pipelines

Works in Ultra Pipelines.

Limitations and Known Issues

Snap Views

Type

Format

Number of Views

Examples of Upstream and Downstream Snaps

Description

Input 

Document

 

  • Min: 0

  • Max: 1

  • Mapper

  • Copy

WHERE clause for the delete condition.

Output

Document

 

  • Min: 0

  • Max: 1

Optional

If an output view is available, then the original document that was used to create the statement will be output with the status of the delete executed.

Error

Error handling is a generic way to handle errors without losing data or failing the Snap execution. You can handle the errors that the Snap might encounter while running the Pipeline by choosing one of the following options from the When errors occur list under the Views tab:

  • Stop Pipeline Execution: Stops the current pipeline execution if the Snap encounters an error.

  • Discard Error Data and Continue: Ignores the error, discards that record, and continues with the remaining records.

  • Route Error Data to Error View: Routes the error data to an error view without stopping the Snap execution.

Learn more about Error handling in Pipelines.

Snap Settings

  • Asterisk ( * ): Indicates a mandatory field.

  • Suggestion icon ((blue star)): Indicates a list that is dynamically populated based on the configuration.

  • Expression icon ((blue star) ): Indicates the value is an expression (if enabled) or a static value (if disabled). Learn more about Using Expressions in SnapLogic.

  • Add icon ( (blue star) ): Indicates that you can add fields in the fieldset.

  • Remove icon ( (blue star)): Indicates that you can remove fields from the fieldset.

  • Upload icon ((blue star) ): Indicates that you can upload files.

Field Name

Field Type

Description

Label*


Default Value: MySQL - Delete
Example: MySQL - Delete

String

Specify the name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your pipeline.

Schema name

Default Value: N/A
Example: SYS

String/Expression/Suggestion

Specify the database schema name. If it is not defined, then the suggestion for the Table Name retrieves all tables names of all schemas.

The values can be passed using the pipeline parameters but not the upstream parameter.

Table name*


Default Value: N/A
Example: people

String/Expression/Suggestion

Specify the table name to execute the delete on.

The values can be passed using the pipeline parameters but not the upstream parameter.


Delete condition (deletes all records from table if left blank)

Default Value: N/A

Examples:

Without using expressions

Using expressions

  • "EMPNO=$EMPNO and ENAME=$EMPNAME"

  • email = $email 

  • emp=$emp

  • "emp='" + $emp + "'"

  • "EMPNO=" + $EMPNO + " and ENAME='" + $EMPNAME+ "'"

String/Expression

Specify the SQL WHERE clause of the delete statement. You can pass the delete condition via an upstream Snap or through the pipeline parameters.

note

  • Provide the delete conditions if a certain record or a column is to be deleted. You can also use the MySQL Select Snap to select a record name, and then specify the delete condition in the MySQL Delete Snap to delete only those particular values from the table that meet the delete condition.

  • Specify a valid WHERE clause for the delete condition. If you leave this field blank, all records are deleted from the table.

  • Provide the delete conditions if a certain record or a column is to be deleted. You can also use the MySQL Select Snap to select a record name, and then specify the delete condition in the MySQL Delete Snap to delete only those particular values from the table that meet the delete condition.

  • Specify a valid WHERE clause for the delete condition. If you leave this field blank, all records are deleted from the table.

Caution

Using expressions that join strings together to create SQL queries or conditions has a potential SQL injection risk and is hence unsafe. Ensure that you understand all implications and risks involved before using concatenation of strings with '=' Expression enabled. 

Number of retries


Default Value: 0
Example: 3

Integer/Expression

Specify the maximum number of attempts to make to receive a response. The request is terminated if the attempts do not result in a response.

Retry interval (seconds)


Default Value: 1
Example: 10

Integer/Expression

Specify the time interval between two successive retry requests. A retry happens only when the previous attempt resulted in an exception. 

Default Value: Execute only
Example: Validate & Execute

Dropdown list