August 17, 2023

tSAPHanaRow – Docs for ESB 5.x

tSAPHanaRow

tsaphanarow_icon32_white.png

Warning

This component will be available in the Palette of
Talend Studio on the condition that you have subscribed to one of
the Talend
solutions with Big Data.

tSAPHanaRow Properties

Component family

Databases / SAP Hana

 

Function

tSAPHanaRow is the specific
component for this database query. It executes the SQL query stated
onto the specified database. The row suffix means the component
implements a flow in the Job design although it does not provide
output.

Purpose

Depending on the nature of the query and the database, tSAPHanaRow acts on the actual database
structure or on the data (although without handling data). The
SQLBuilder tool helps you write easily your SQL statements.

Basic settings

Use an existing connection

Select this check box and in the Component List click the
relevant connection component to reuse the connection details you already defined.

Note

When a Job contains the parent Job and the child Job, if you need to share an existing
connection between the two levels, for example, to share the connection created by the
parent Job with the child Job, you have to:

  1. In the parent level, register the database connection to be shared in the
    Basic settings view of the connection
    component which creates that very database connection.

  2. In the child level, use a dedicated connection component to read that
    registered database connection.

For an example about how to share a database connection across Job levels, see
Talend Studio User
Guide
.

 

DB Version

Select the SAP Hana Database (HDB) version you are using.

 

Property type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

 

 

Built-in: No property data stored
centrally.

 

 

Repository: Select the repository
file in which the properties are stored. The fields that follow are
completed automatically using the data retrieved.

 

Host

Database server IP address.

 

Port

Listening port number of database server.

 

Username and Password

Database authentication data.

To enter the password, click the […] button next to the
password field, and then in the pop-up dialog box enter the password between double quotes
and click OK to save the settings.

 

Schema and Edit
Schema

A schema is a row description. It defines the number of fields to be processed and passed on
to the next component. The schema is either Built-In or
stored remotely in the Repository.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

 

 

Built-in: The schema is created
and stored locally for this component only. For more information,
see Talend Studio User
Guide
.

 

 

Repository: The schema already
exists and is stored in the Repository, hence can be reused. For
more information, see Talend Studio User Guide.

   

Click Edit schema to make changes to the schema. If the
current schema is of the Repository type, three options are
available:

  • View schema: choose this option to view the
    schema only.

  • Change to built-in property: choose this option
    to change the schema to Built-in for local
    changes.

  • Update repository connection: choose this option to change
    the schema stored in the repository and decide whether to propagate the changes to
    all the Jobs upon completion. If you just want to propagate the changes to the
    current Job, you can select No upon completion and
    choose this schema metadata again in the [Repository
    Content]
    window.

 

Table Name

Name of the table to be written. Note that only one table can be
written at a time.

 

Query Type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are
available in any of the Talend solutions.

 

 

Built-in: Fill in manually the
query statement or build it graphically using SQLBuilder.

 

 

Repository: Select the relevant
query stored in the Repository. The Query field gets accordingly
filled in.

 

Guess Query

Click the Guess Query button to
generate the query which corresponds to your table schema in the
Query field.

 

Query

Enter your database query paying particularly attention to
properly sequence the fields in order to match the schema
definition.

 

Die on error

This check box is cleared by default. This means that Die on error skips the row when an error
is encountered and completes the process for rows without
errors.

Advanced settings

Additional JDBC Parameters

Specify additional connection properties in the database
connection you are creating. This option is not available if you
have selected Use an existing
connection
check box in the Basic settings.

 

Propagate QUERY’s recordset

Select this check box to insert the result of the query into a
column of the current flow. Select this column from the use column list.

Note

This option allows the component to have a different schema
from that of the preceding component. Moreover, the column that
holds the QUERY’s recordset should be set to the type of
Object and this component
is usually followed by tParseRecordSet.

 

Commit every

Number of rows to be completed before committing batches of rows
together into the database. This option ensures transaction quality
(but not rollback) and above all better performance on
executions.

 

Use PreparedStatement

Select this check box if you want to query the database using a
PreparedStatement. In the Set
PreparedStatement Parameter
table, define the
parameters represented by “?” in the SQL instruction of the
Query field in the Basic Settings tab.

Parameter Index: Enter the
parameter position in the SQL instruction.

Parameter Type: Enter the parameter
type.

Parameter Value: Enter the
parameter value.

Note

This option is very useful if you need to execute the same
query several times. Performance levels are increased.

 

tStatCatcher Statistics

Select this check box to collect log data at the component
level.

Global Variables

QUERY: the SQL query statement being processed. This is a
Flow variable and it returns a string.

ERROR_MESSAGE: the error message generated by the
component when an error occurs. This is an After variable and it returns a string. This
variable functions only if the Die on error check box is
cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable
functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl +
Space
to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio
User Guide.

Usage

This component offers the flexibility of the database query and
covers all possible SQL queries.

Log4j

The activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User
Guide
.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Related scenario

No scenario is available for this component yet.


Document get from Talend https://help.talend.com
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