ADF Dataset Validation Validation Issues select count(1) from TABLENAME sql query / that is a problem


hi

adf v1

azure sql external dataset

{    "$schema": "http://datafactories.schema.management.azure.com/schemas/2015-09-01/microsoft.datafactory.table.json",    "name": "somename",    "properties": {      "type": "azuresqltable",      "linkedservicename": "azuresqldatabase",      "structure": [],      "typeproperties": {        "tablename": "schema.table"      },      "availability": {        "frequency": "day",        "interval": 1      },      "policy": {        //"validation": {        //  "minimumrows": 100        //}      },      "external": true    }  }

i thought validating rows on external sql dataset. defined validation rule. rows.

but instead of executing validation while copy (i use query source sqlreaderquery) seams "select count(1) schema.table" executed against database.

i have 2 issues that.

 - @ copy level not rows must read table - wrong

 - , more imporantly plain count(1) on rows might slow. in case fails timeout or fails overflow exception because table has more 2^31 rows.

does on of have recommendation me how validation @ copy level?

is functionality better in adf v2 ?

thanks input

http://www.hmayer.net/



Microsoft Azure  >  Azure Data Factory



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