The resulting screen has the following options available:
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Perform extended numeric analysis — By default, the Text Field Analyzer analysis tests each numeric field by doing a test to determine whether it is Integer, Float, or Decimal. A date field undergoes a test to validate that all values are valid dates. Unchecking this option removes the test and saves an extra pass of the data for each numeric or date field.
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Perform extended analysis of Unicode character fields — If Unicode columns are selected as input, they undergo another pass of the data which determines how many values of that column can be represented as regular Latin characters.
