How do I specify that optional data columns should be populated with NULL in data generator?
To specify for the optional columns to be populated with NULL, click on the column you want to specify this for on the left hand side of the data generator screen. If you want all rows to be entered with NULL, you can either uncheck the ‘Generate Data’ option or check the ‘Allow NULLS’ option and change the ‘% NULL’ field to 100. If you only want some of the rows to be NULL, check the ‘Allow NULLS’ option and set the ‘% NULL’ field to the percentage you want.
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