我有一个问题,将sql服务器代码转换为mysql。我无法解决退货问题。错误是:[Err] 1415-不允许从函数返回结果集。我尝试使用select into,但无法解决。有什么想法吗?
CREATE FUNCTION udf_NORMDIST (v FLOAT,
mean FLOAT,
sigma FLOAT,
cummulative int)
RETURNS NUMERIC(28,8)
BEGIN
SELECT @x = (v-mean)/sigma;
IF (cummulative = 1) then
SELECT @z = abs(@x)/sqrt(2.0);
SELECT @t = 1.0/(1.0+0.5*@z);
SELECT @ans = @t*exp(-@z*@z-1.26551223+@t*(1.00002368+@t*(0.37409196+@t*(0.09678418+@t*(-0.18628806+@t*(0.27886807+@t*(-1.13520398+@t*(1.48851587+@t*(-0.82215223+@t*0.17087277)))))))))/2.0;
IF @x <= 0 then
return @ans;
ELSE
return 1-@ans;
END if;
ELSE
return exp(-@x*@x/2.0)/sqrt(2.0*3.14159265358979);
END if;
END