Does Oracle's NUMBER Data Type Store Trailing Zeroes?

Trailing Zeroes and Oracle's NUMBER Data Type: Debunking the Storage Issue

When dealing with numeric values, database precision and display formats play crucial roles. In Oracle, the NUMBER data type is commonly utilized to store numerical data. However, a common question arises regarding the treatment of trailing zeroes for this data type.

As illustrated in the example provided, numeric values stored in a NUMBER column may not display trailing zeroes when queried using SQL Developer. This behavior stems from display settings rather than storage inconsistencies. Internally, Oracle preserves the precision and scale of numeric values, including trailing zeroes.

The absence of trailing zeroes in the displayed results is solely for display purposes. The underlying values stored in the database remain intact, allowing accurate comparisons and calculations. To ensure precise comparisons, it's essential to consider the scale factor and use formatting techniques, such as java.text.DecimalFormat, to achieve the desired display format.

In conclusion, Oracle's NUMBER data type does store trailing zeroes, but they may not be apparent due to display settings. Understanding this distinction allows for proper data manipulation and accurate comparisons of numeric values.

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