如何将mySQL代码转换为Oracle SQL

Question

如何更改mySQL代码以在Oracle SQL 11g中工作

SELECT a.boxid, 
GROUP_CONCAT( CONCAT( b.quantity, \' x \', c.name ) SEPARATOR \', \' ) Items
FROM box a
INNER JOIN item_line b ON a.boxid = b.boxid
INNER JOIN items c ON b.itemid = c.itemid

此查询的输出如下所示：

boxid     items
1         2 x ball,4 x bat
2         ball
3         3 x cap,2 x ball,bat
4         2 x ball

感谢您的回答。

Answer 1

使用LISTAGG()

SELECT  boxid,
        LISTAGG(quantity || ' x ' || name, ',') 
            WITHIN GROUP (ORDER BY boxid) AS items
FROM    tableName
GROUP   BY boxid

• SQLFiddle Demo
• SQLFiddle Demo (if you want 1 x to suppress)
• Oracle LISTAGG()

Answer 2

您可以尝试Oracle的SQL Developer Migration（这是一款免费产品）。文档说它将有助于将Microsoft Access，Microsoft SQL Server，MySQL和Sybase迁移到Oracle：

http://www.oracle.com/technology/tech/migration//workbench/index%5Fsqldev%5Fomwb.html