Calculate division in Oracle - solve the error report when the divisor is zero

One 、 Problem description

    stay Oracle In the database , You need to use division , But the divisor may be zero , If used directly sql Division operator in （/）, May be an error .

Two 、 Problem analysis

    Through analysis, we found that , Yes, the divisor is 0 There will be problems , Then we can exclude the divisor of zero and directly specify the result as 0, And then we're doing division （ In addition, the division will result in a long number of decimal places , Need to cooperate with Round Function to intercept the corresponding reserved decimal places ）.

3、 ... and 、 terms of settlement

3.1、 Syntax and examples for calculating division

--Oracle Calculation division syntax in 
SELECT case WHEN(NVL( Divisor , 0))!=0 THEN round( Divisor  /  Divisor , Number of decimal places to be reserved ) ELSE 0 END result FROM DUAL

 

 3.2、 Calculate the contents of the function used for division

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