With Talend Open Studio for Big Data (Version: 6.4.1), I succeed in loading a file from Google cloud storage (or flat file) to a Bigquery table with tBigQueryOutput.
Nethertheless, the date fields are loaded in a Bigquery TIMESTAMP type or a STRING type.
I do not succeed to load a date field in a Bigquery DATE type.
I tried different ways with SQL instructions (parse_date...), or with tJava, or with tMap to transform the fields in the correct format.
But at the end, Talend loading in a Bigquery timestamp type or string type, but not in Bigquery date type.
Have you ever encountered this problem ?
Do you have a solution, please ?
Talend supports the same data types than Big Query: https://cloud.google.com/bigquery/preparing-data-for-bigquery#datatypes
Have you tried to insert a tMap into your flow and change the datatypes from the output flow to what BigQuery only allows? After that you have to convert the types with the assignment expressions or you could use the tConvertType component.
Thanks for your answer.
Yes, I tried to insert different components (tMap or tJava tConvertType, ...) and I succeed to change the date type as BigQuery allows.
But at the end of the flow, when Talend loads data, the date type is a timestamp in Bigquery.
In my opinion, it is a Talend issue which not distinguish Bigquery date type and timestamp type.
Could you please have a look at this jira issue:https://jira.talendforge.org/browse/TBD-3208?
The issue concerns the Bigquery data type DATE.
I don't see this data type in the list and it is not mentionned in the answer.
Are you concerning more about Bigquery data type DATE? Are you trying to create a JDBC connection in metadata for BigQuery or use it in bigdata spark job?
I'd like to push DATE data to Bigquery as a DATE datatype and not a TIMESTAMP so Bigquery queries don't have to be customized to exclude the time.
I have had a similar issues when filtering by date range - meta base sends a SQL cast query which big query struggles with. I have not fixed it but think the solution is to store dates as type DATE in big query to avoid the cast Student British essay writers UK.
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