choose twoide
Which two statenents are tue about the COUNT function?it
A) It can only be used for NUMBER data types.io
B) COUNT (DISTINCT inv_amt) returns the number of rows excluding rows containing dupicates and NULLs in the INV_AMT columntable
C) COUNT(*) returns the number of rows in a table including duplicate rows and rows containing NULLs in any column.function
D) A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE clause.class
E) COUNT(inv_amt) returns the number of rows in a table including rows with NULL in the INV_AMT column.sed
Answer：：BCword
(解析：count 对于 null 值是忽略的;能够与 where 一块儿使用。)tab