我试图从特定日期一个月前找到日期。但面临一个奇怪的问题。 var d = new Date(2009, 1, 25);
var dt = d.getDate();
var m = d.getMonth() - 1;
var y = d.getFullYear();
if(m === 0) {
m = 12;
y -= 1;
}
var numDays = new
我有一个SQL代码。 SELECT DISTINCT SQL_CALC_FOUND_ROWS
sales.code as code,
SUM(CASE WHEN sales.type = 51 THEN sales.amount ELSE 0 END) AS amount,
sales.type as type
FROM sales