July 30, 2023

tMSSqlSP – Docs for ESB 7.x

tMSSqlSP

Offers a convenient way to centralize multiple or complex queries in a database and
calls them easily.

tMSSqlSP calls the stored procedure in
a Microsoft SQL Server or Azure SQL database.

tMSSqlSP Standard properties

These properties are used to configure tMSSqlSP running in the Standard Job framework.

The Standard
tMSSqlSP component belongs to the Databases family.

The component in this framework is available in all Talend
products
.

Note: This component is a specific version of a dynamic database
connector. The properties related to database settings vary depending on your database
type selection. For more information about dynamic database connectors, see Dynamic database components.

Basic settings

Database

Select a type of database from the list and click
Apply.

Property type

Either Built-in or Repository
.

 

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.

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
.

JDBC Provider

Select the provider of the JDBC driver to be used, either Microsoft (recommended) or Open
source JTDS
.

When using this component with Datasource in Talend Runtime, you need
to use the Open source JTDS driver.

Note that when Microsoft is selected, you
need to download the Microsoft JDBC Driver for SQL Server on Microsoft Download Center, unpack
the downloaded zip file, choose a jar in the unzipped folder based on your JRE version,
rename the jar to mssql-jdbc.jar and install it manually. For more
information about choosing the jar, see the System Requirements information on Microsoft Download Center.

Host

Database server IP address

Port

Listening port number of DB server.

Database

Name of the database.

Schema

Name of the schema.

Username and Password

DB user 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

In SP principle, the schema is an input parameter.

A schema is a row description. It defines the number of fields
(columns) to be processed and passed on to the next component. When you create a Spark
Job, avoid the reserved word line when naming the
fields.

 

Built-In: You create and store the schema locally for this component
only.

 

Repository: You have already created the schema and stored it in the
Repository. You can reuse it in various projects and Job designs.

 

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.

SP Name

Type in the exact name of the Stored Procedure

Is Function / Return result
in

Select this check box, if only a value is to be returned.

Select on the list the schema column, the value to be returned is
based on.

Parameters

Click the Plus button and select the various Schema Columns that will be required by the procedures.
Note that the SP schema can hold more columns than there are paramaters
used in the procedure.

Select the Type of parameter:

IN: Input parameter

OUT: Output parameter/return
value

IN OUT: Input parameters is to be
returned as value, likely after modification through the procedure
(function).

RECORDSET: Input parameters is to be
returned as a set of values, rather than single value.

Note:

Check Inserting data in mother/daughter tables, if you want to analyze a set of
records from a da­tabase table or DB query and return single
records.

Specify a data source alias

Select this check box and specify the alias of a data source created on the
Talend Runtime
side to use the shared connection pool defined in the data source configuration. This
option works only when you deploy and run your Job in
Talend Runtime
.

This check box is not available when the Use an existing
connection
check box is selected.

Data source alias

Enter the alias of the data source created on the
Talend Runtime
side.

This field is available only when the Specify a data
source alias
check box is selected.

Advanced settings

Additional JDBC parameters

Specify additional connection properties for the database
connection you are creating. The properties are separated by semicolon and
each property is a key-value pair. For example, encrypt=true;trustServerCertificate=false;
hostNameInCertificate=*.database.windows.net;loginTimeout=30; for
Azure SQL database connection.

This field is not available if the Use an existing
connection
check box is selected.

tStatCatcher Statistics

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

Usage

Usage rule

This component is used as intermediary component. It can be used as
start component but only input parameters are thus allowed.

Dynamic settings

Click the [+] button to add a row in the table
and fill the Code field with a context
variable to choose your database connection dynamically from multiple
connections planned in your Job. This feature is useful when you need to
access database tables having the same data structure but in different
databases, especially when you are working in an environment where you
cannot change your Job settings, for example, when your Job has to be
deployed and executed independent of Talend Studio.

The Dynamic settings table is
available only when the Use an existing
connection
check box is selected in the Basic settings view. Once a dynamic parameter is
defined, the Component List box in the
Basic settings view becomes unusable.

For examples on using dynamic parameters, see Reading data from databases through context-based dynamic connections and Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic
settings
and context variables, see Talend Studio
User Guide.

Limitation

The Stored Procedures syntax should match the Database syntax.

Due to license incompatibility, one or more JARs required to use
this component are not provided. You can install the missing JARs for this particular
component by clicking the Install button
on the Component tab view. You can also
find out and add all missing JARs easily on the Modules tab in the
Integration
perspective of your studio. You can find more details about how to install external modules in
Talend Help Center (https://help.talend.com)
.

Retrieving personal information using a stored procedure

This scenario describes a Job that retrieves a personal information record from a
specified table using a stored procedure according to the id value defined in the input flow.

tMSSqlSP_1.png

In this scenario, the table to retrieve data from contains the personal information.
To reproduce this scenario, you can write the data into the table from a CSV file like
the following. For how to write data into a MS SQL table, see Inserting data into a database table and extracting useful information from it.

In this scenario, the stored procedure used to retrieve the personal information is as
follows:

Dropping and linking the components

  1. Create a new Job and add the following components by typing their names in
    the design workspace or dropping them from the Palette: a tFixedFlowInput
    component, a tMSSqlSP component, a
    tParseRecordSet component, and two
    tLogRow components.
  2. Connect tFixedFlowInput to tMSSqlSP using a Row > Main link.
  3. Do the same to connect tMSSqlSP to the
    first tLogRow, the first tLogRow to tParseRecordSet, and tParseRecordSet to the second tLogRow.

Configuring the components

Configuring the input component

  1. Double-click tFixedFlowInput to open its
    Basic settings view.

    tMSSqlSP_2.png

  2. Click the […] button next to Edit schema to open the schema editor.

    tMSSqlSP_3.png

    Click the [+] button to add two columns:
    id of the integer type and name of the string type.
    Click OK to close the schema
    editor.
  3. In the Mode area, fill each column with
    respective value. In this example, the id
    value is set to 4, and the name value is null since it is not used in the
    select SQL statement in the stored procedure.

Configuring the tMSSqlSP component

  1. Double-click tMSSqlSP to open its
    Basic settings view.

    tMSSqlSP_4.png

  2. Fill in the Host, Port, Schema, Database, Username, and Password
    fields with your MS SQL Server connection details.
  3. In the SP Name field, enter the name of
    the stored procedure to be used. In this example, it is QueryPerson.
  4. Click the […] button next to Edit schema to open the schema editor.

    tMSSqlSP_5.png

    Click the

    tMSSqlSP_6.png

    button to copy all columns from the input schema to the
    output schema, and then click the [+]
    button in the right panel to add a new column person of the object type to hold the personal information
    to be retrieved from the database.

    Click OK to close the schema editor and
    accept the propagation prompted by the pop-up dialog box.
  5. In the Parameters area, click the
    [+] button to add three rows and select
    a schema column and its type for each row. In this example, the id and name
    columns are of type IN, and the person column is of type RECORD SET.

Configuring the tParseRecordSet component

  1. Double-click tParseRecordSet to open its
    Basic settings view.

    tMSSqlSP_7.png

  2. From the Prev. Comp. Column list
    drop-down list, select the column that holds the personal information to be
    parsed. In this example, it is person.
  3. Click the […] button next to Edit schema to open the schema editor.

    tMSSqlSP_8.png

    Click the [+] button in the right panel
    to add four columns: id and age of the integer type, and name and sex
    of the string type.
    Click OK to close the schema editor and
    accept the propagation prompted by the pop-up dialog box.
  4. In the Attribute table area, fill in each
    Value column with the corresponding
    column name in the MS SQL Server table that holds the personal
    information.

Configuring the output components

  1. Double-click the first tLogRow to open
    its Basic settings view.

    tMSSqlSP_9.png

    In the Mode area, select Vertical (each row is a key/value list) for a
    better display of the result.
  2. Do the same to configure the second tLogRow.

Saving and executing the Job

  1. Press Ctrl + S to save the Job.
  2. Press F6 to run the Job.

    tMSSqlSP_10.png

    The personal information with the id of 4 in the MS SQL table is displayed in the lower table on the
    console. Note that the values of the id
    and name columns shown in the upper table
    are the input data.

Related scenarios

For related scenarios, see:

Check as well Inserting data in mother/daughter tables to analyze a set of records from a database table or DB query and return single
records.


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