如何从多次出现的数据库中获取相同的plate_number

Question

我需要一个select查询：如何从多次出现的数据库中获取相同的plate_number

• 数据库：numbers
• 表：number_plate

示例数据：

plate_code  plate_number
------------------------
A           45990
B           54667
c           45990
D           0908
E           54667
F           65534
G           3422
H           32009
I           0908

我希望输出看起来像这样：

A   45990
A   45990
B   54667
E   54667
I   0908

Answer 1

请尝试使用此count(plate_number) GROUP BY和HAVING语句。

$query = "SELECT plate_code,plate_number from table_name  GROUP BY plate_number HAVING count(plate_number)>1";

Answer 2

这很容易尝试这个

   SELECT plate_code, plate_number
   FROM table_name
   WHERE plate_number  IN (
   SELECT plate_number
   FROM table_name
   GROUP BY plate_number
    HAVING COUNT(id) > 1 
    ORDER BY plate_number ASC
     ) ORDER BY plate_number ASC