Which four statements correctly describe functions that are available in SQL? ()

A . INSTR returns the numeric position of a named character. B . NVL2 returns the first non-null expression in the expression list. C . TRUNCATE rounds the column, expression, or value to n decimal places. D . DECODE translates an expression after comparing it to each search value. E . TRIM trims the heading or trailing characters (or both) from a character string. F . NVL compares two expressions and returns null if they are equal, or the first expression if they are not equal. G . NULLIF compares two expressions and returns null if they are equal, or the first expression if they are not equal.

时间:2022-10-16 11:33:53 所属题库:1Z0-007题库

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