A significant aspect of business solutions built on Access is the ability to read and write data to and from external data sources that use BigInt as PK or other , such as SQL.
When creating new local tables or editing existing ones, Access now allows users to add fields that store BigInt numbers. Customers specifically asked for the ability to import BigInt columns and link to tables with BigInt columns in a native way. Turning Large Number support on allows users to import from and link to tables with BigInt columns, and have them represented in Access in a Large Number format.
In Access, there are four different contexts in which you may need to specify a data type—in table Design view, in the Query Parameters dialog box, in Visual Basic, and in SQL view in a query. Have questions or feedback about Office VBA or this documentation?
Please see Office VBA support and feedback for guidance about the ways you can receive support and provide feedback. Skip to main content. The single byte number is named Byte Range , the two-byte number is named Integer to and then there is the Long Integer -2 billion to 2 billion.
Decimal Decimal numbers are so called fixed point numbers. They can have a fractional part, and they can be either positive or negative. Decimals have a fixed number of digits to left and to the right of the decimal point. The maximum total number of digits supported by Access is Decimals are used for exact numeric values. Despite the name "Decimal" you can also use the decimal data type for integers larger than the range supported by the Long Integer type. Decimals are only supported by Microsoft Access and later.
A decimal number uses 17 bytes of disk space. Currency The currency type is a special kind of decimal, with up to 4 digits on the right of the decimal point and up to 15 on the left. It was introduced for financial data and is available in all versions of Access. You can also change the field size of a field that stores text data, although this action has a smaller effect on the amount of space that is used.
Note: The functionality explained in this article doesn't apply to Access web databases and Access web apps. What happens when I change the field size? Change the field size of a number field. Change the field size of a text field. You can change the field size of a field that is empty or that already contains data. The effect of changing the field size depends on whether the field already contains data. If the field does not contain data When you change the field size, the size of new data values is limited for the field.
For number fields, the field size determines exactly how much disk space Access uses for each value of the field. For text fields, the field size determines the maximum amount of disk space that Access allows for each value of the field. If the field contains data When you change the field size, Access truncates all the values in the field that exceed the specified field size, and also limits the size of new data values for the field, as described above.
Tip: If the field for which you want to change the field size already contains data, consider making a backup of your database before you proceed. In the Navigation Pane, right-click the table that contains the field that you want to change, and then click Design View.
In the Field Properties pane, on the General tab, enter the new field size in the Field Size property.
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