Question

此查询在MySQL 5.1.57中给出了一个错误，但在5.1.53中工作：


    DELETE f
    FROM table1 AS f
    JOIN table2 AS dsy
    JOIN table3 AS ds
    JOIN table4 AS dp
    JOIN table5 AS dg
    WHERE
    dsy.f1 = f.f1
    AND ds.f2 = f.f2
    AND dp.f3 = f.f3
    AND dg.f4 = f.f4
    AND dsy.school_year = 2011
    AND ds.id = 29620
    AND dp.id = 14120
    AND dg.grade_level = 5;

错误是：MULTI DELETE中的未知表'f'

谢谢！

编辑：实际上这个查询有效，问题是我正在使用模式名称来声明我的表格，如schema.table1（我删除它以在此处发布更清晰的查询），模式名称中断... ...

Answer 1

尝试此查询 -

DELETE f
FROM table1 AS f
JOIN table2 AS dsy
  ON dsy.f1 = f.f1
JOIN table3 AS ds
  ON ds.f2 = f.f2
JOIN table4 AS dp
  ON dp.f3 = f.f3
JOIN table5 AS dg
  ON dg.f4 = f.f4
WHERE
  dsy.school_year = 2011 AND ds.id = 29620 AND dp.id = 14120 AND dg.grade_level = 5;

Answer 2

您是否尝试删除所有表别名？提出了类似的解决方案here。所以以下内容可能有效：

DELETE table1
    FROM table1 
    JOIN table2 
    JOIN table3 
    JOIN table4 
    JOIN table5 
    WHERE
    table2.f1 = table1 .f1
    AND table3.f2 = table1.f2
    AND table4.f3 = table1.f3
    AND table5.f4 = table1.f4
    AND table2.school_year = 2011
    AND table3.id = 29620
    AND table4.id = 14120
    AND table5.grade_level = 5;

Answer 3

我在删除后使用模式解决了同样的错误：

DELETE **`schemaX`.f**
    FROM `schemaX`.table1 AS f
    JOIN table2 AS dsy
    JOIN table3 AS ds
    JOIN table4 AS dp
    JOIN table5 AS dg
    WHERE
    dsy.f1 = f.f1
    AND ds.f2 = f.f2
    AND dp.f3 = f.f3
    AND dg.f4 = f.f4
    AND dsy.school_year = 2011
    AND ds.id = 29620
    AND dp.id = 14120
    AND dg.grade_level = 5;

MULTI DELETE中的未知表

3 个答案: