Can we read data from multiple tables at a time using tOracleInput?
On talend
need answer.
Probably by using the tParallelize component if you have subscription:
https://help.talend.com/r/en-US/7.3/orchestration/tparallelize-standard-properties
Related
My Scenario is I have data in AWS S3 flat files.
I am using SNS to trigger the Snow-pipe when new file arrives in S3.
To load the data from flat files in S3 to Snowflake table I am using Snow-pipe.
So While loading data from flat files to snowflake table by Snow-pipe,
Can I handle data-validation and couple of calculations on source data?
Please help me if we have any way to do this...
Thanks in Advance.
Validation_mode copy option is not yet supported by snowpipe. However, snowpipe does support simple transformations like column reordering, cast etc are supported. The best way to perform calculations and transform your data would be to load the data into a staging table and process downstream into target tables.
Reference:
https://docs.snowflake.net/manuals/sql-reference/sql/create-pipe.html#usage-notes
https://docs.snowflake.net/manuals/user-guide/data-load-transform.html
I need to import data from the inner joined tables of one db to a table of another db using Talend ETL tool.How can i do that?
Iam just new to talend.
How can i inner join the tables using condition in talend
Based on your requirement there would be multiple ways to achieve this.
One approach -
Use tMSSqlInput (for Sql Server - this would change based on your source database) and mention the required attributes to make the connection. In "Query" section - write your complete query involving the three different tables -
Once done, use tMap (to transform your data as per destination table) if required and then tMSSqlOutput (for Sql Server - this would change based on your destination database) to write the data to your table which would reside in another database. In connection properties make sure your configure the database correctly.
For tMSSqlOutput do check the properties - Use Batch/Batch Size & Commit every.
Sample job flow -
Now, another approach could be using bulk feature. You would be able to use tMSSqlOutputBulk to output the data retrieved from your source database into a file and then use tMSSqlBulkExec to bulk load the data from file into your destination table in your destination database.
Sample flow -
Note: Always compare which would be solution would be best fit by comparing the performance of all the available solutions.
I´ve a mysql statement which retrieves a lot of data from a table via the tMysqlInput component. Now I want to process the data in different ways and then merge them back again to a single output of the job.
Therefore I wanted to use the tReplicate component to avoid multiple requests to my SQL server. But if I´m using tReplicate I´m not able to map the two datastreams afterwards again with tMap.
Is there any other way to reuse the result of a mySql component multiple times?
Thanks in advance,
Michael
You can use tHashOutput to save the data from mysql and then use tHashInput to read that data and use in tMap.
I'm trying to integrate multiple databases using talend and in turn have an SOR_id for each table for auditing purposes. is it possible to map between multiple source tables simultaneously to destination table having an SOR_id which is meant to be auto incremented? Would I have incremental values for each source tables rows
I have approached this using another way as shown in the image so that my SOR_id can be accounted for.
I want ot transfer data from one hadoop server to another hadoop server with help of Talend.
Through my research I come to know we can transfer data through flat files.Can any one suggest me how to transfer data from hive to flat file. If any other alternative way to transfer data using talend please suggest me.
You can use the tHiveInput Component to read the data from the hive table. Use a row link to connect it to a tfileInputDelimited component.
If you want to transfer to another Hadoop system, you can use a tHiveOutput or a tHDFSOutput instead of tFileInputDelimited.