Question

我正在尝试执行以下查询并出现错误[窗口标题] SQL错误（1064）：您的SQL语法有错误；检查与您的MariaDB服务器版本相对应的手册以获取正确的语法，以在第44行的''附近使用

WITH Master_CTE (`id`,`range`, `review`, `validate`)
AS (SELECT 1 as `id`,
  '<1' AS `range`,
  0 AS `review`,
  0 AS `validate`
UNION
SELECT 2 as id,
  '1-4' AS `range`,
  0 AS `review`,
  0 AS `validate`
UNION
SELECT 3 as `id`,
  '4-8' AS `range`,
  0 AS `review`,
  0 AS `validate`
UNION
SELECT 4 as `id`,
  '8-24' AS `range`,
  0 AS `review`,
  0 AS `validate`
UNION
SELECT 5 as `id`,
  '>24' AS `range`,
  0 AS `review`,
  0 AS `validate`)
SELECT
  mc.id,
  IFNULL(t.time_taken, mc.range) AS `range`,
  IFNULL(t.review, mc.review) AS `review`,
  IFNULL(t.validate, mc.validate) AS `validate`
FROM Master_CTE mc LEFT OUTER JOIN 
(SELECT m.range AS `range`, 
       Ifnull((SELECT Count(r.req_status) AS `reviewcount` 
               FROM   T1 r 
               WHERE  r.req_status = 'READY_FOR_REV' 
                      AND r.time_taken = m.range 
               GROUP  BY r.time_taken), 0) `review`, 
       Ifnull((SELECT Count(s.req_status) AS `reviewcount `
               FROM   T1 s 
               WHERE  s.req_status = 'READY_FOR_VAL' 
                      AND s.time_taken = m.range
               GROUP  BY s.time_taken), 0) `validate`
FROM   V1 m 
GROUP  BY m.range) t

表名替换为T1，视图名替换为V1。

当我单独运行时，LEFT OUTER JOIN之后的子查询工作正常，但是当我将它们组合在一起时，它开始出现错误，如标题所示。

请帮助

Answer 1

LEFT OUTER JOIN缺少联接条件，即ON t.range=mc.range之类的内容，或者您的联接条件应该在结尾处正确。

SQL错误（1064）：检查手册与您的MariaDB服务器版本相对应，以在第44行的''附近使用正确的语法

1 个答案: