oracle - I am dissecting a SQL statement and cannot find out what the "parse_activity" statement does -

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I'm severing a SQL statement and can not determine whether "parse_activity" statement I have the following syntax can not find anything with: 

  with PARSE_ACTIVITY aS (SELECT C.SOURCE_ID SUBMISSION_ID, C.NEED_BY_DT, C.PENDING_DT, C.ASSIGNED_DT, A.CREATE_HID, A.WORKFLOW_ACTIVITY_ID, e. WORKFLOW_COMMENT_ID , A.BUS_DIVISION_CD * .... etc .... *

you Seeing it is known as the General Table Expression (CTE).

CTE in Oracle For use, see

To use CTE in Microsoft SQL Server, see:


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