post - Postgresql Parallel Processing/Batch Processing -

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i need call function, test_function(clientcode) every clientcode, c1, c2, etc. test_function(c1), test_function(c2) @ same time.
inside test_function(clientcode): read records clientcode sampletable, insert values temporarytable, processing , put values finaltable.

how make sure test_function(c1), test_function(c2), test_function(c3) called @ same time. how avoid locking? how batch processing achieved? can parallel processing done above scenario? appreciated.





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