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Differentiate between the mathematical function Truncate(x) and Round(x) with an example. -Database management system
Presidency University, Bangalore- Database management system
ROUND(X,D)
This function returns X rounded to the nearest integer. If a second argument, D, is supplied, then the function returns X rounded to D decimal places. D must be positive or all digits to the right of the decimal point will be removed. Consider the following example −
SQL>SELECT ROUND(5.693893);+---------------------------------------------------------+
| ROUND(5.693893) |
+---------------------------------------------------------+
| 6 |
TRUNCATE(X,D)
This function is used to return the value of X truncated to D number of decimal places. If D is 0, then the decimal point is removed. If D is negative, then D number of values in the integer part of the value is truncated. Consider the following example −
SQL>SELECT TRUNCATE(7.536432,2);+---------------------------------------------------------+
| TRUNCATE(7.536432,2) |
+---------------------------------------------------------+
| 7.53 |
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