Undefined data type
If you do not want to select a data type immediately, you can choose the Undefined data type.6 Type the maximum number of characters for the data type in the Length box.
7 If the data type includes values after a decimal point, type the number of places after the decimal point in the Precision box.
8 Click OK.The change of data type appears in the Data Type box.--双击该字段->选择 DateType->选择 "?"->选择" Undefined"
If you do not want to select a data type immediately, you can choose the Undefined data type.6 Type the maximum number of characters for the data type in the Length box.
7 If the data type includes values after a decimal point, type the number of places after the decimal point in the Precision box.
8 Click OK.The change of data type appears in the Data Type box.--双击该字段->选择 DateType->选择 "?"->选择" Undefined"
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