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exclude	Older Versions\|Additional Resources\|Related Links\|Related Information

Snap type:

Write

Description:

This Snap allows you to execute an SQL delete with the given properties.

If a SELECT query is executed, the query's results are merged into the incoming document and any existing keys will have their values overwritten. On the other hand, the original document is written if there are no results from the query.

Expected upstream Snaps: The dynamic variables used in the execute query can be defined by providing values upstream. The document generator Snaps like JSON Generator can be used upstream.
Expected downstream Snaps: The Snap will output one document for each execution of Snap with data about number of documents deleted, hence any document processing Snap can be used downstream.

Prerequisites:

[None]

Support and limitations:

Works in Ultra Task Pipelines.

Account:

This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. See Configuring SAP HANA Accounts for information on setting up this type of account.

Views:

Input

This Snap has exactly one document input view. If the input view is defined, then the where clause can substitute incoming values for a given expression.

Output

This Snap has at most one document output view. 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

This Snap has at most one document error view and produces zero or more documents in the view.

Note
Database Write Snaps output all records of a batch (as configured in your account settings) to the error view if the write fails during batch processing.

Settings

Label

Required. 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

The database schema name. In case it is not defined, then the suggestion for the table name will retrieve all tables names of all schemas. The property is suggest-able and will retrieve available database schemas during suggest values.

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

Example: myschema

Default value: [None]

Table name

Required. Table name to execute the delete on.

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

Example: people

Default value: [None]

Delete Condition (Truncates Table if empty)

This is an expression property to specify the SQL WHERE clause of the delete statement. The delete condition may also be passed via an upstream Snap or through the pipeline parameters.

Note
Specify a valid WHERE clause for the delete condition. If you leave this field blank, the Snap truncates the table.

Examples:

Without using expressions

EmpId = 12
email = 'you@example.com'

Using expressions

"EMPNO=$EMPNO and ENAME=$EMPNAME"
email = $email
emp=$emp
"emp='" + $emp + "'"
"EMPNO=" + $EMPNO + " and ENAME='" + $EMPNAME+ "'"

Warning

title	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.

Multiexcerpt include macro

name	ME_DB_Snaps_Query_Examples
page	Oracle - Update

Default value: [None]

Number of retries

Specifies the maximum number of attempts to be made to receive a response. The request is terminated if the attempts do not result in a response.

Example: 3

Default value: 0

Multiexcerpt include macro

name	retries
page	File Reader

Retry interval (seconds)

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

Example: 10

Default value: 1

Multiexcerpt include macro

name	Snap Execution
page	SOAP Execute

Multiexcerpt include macro

name	Execution_Detail_Write
page	SOAP Execute

Examples

This example deletes the records from table 'USER'. After the execution of the pipeline all the user records with age 52 are deleted from table.

The delete condition specifies the condition to identify the records to be deleted.

The sample output of the Snap looks like below:

Insert excerpt

	SAP HANA Snap Pack
	SAP HANA Snap Pack
nopanel	true

Versions Compared

Old Version 29

New Version 30

Key

Settings

Examples