Question

我的查询从3个表中选择数据，将结果设置为＆＃39; title＆＃39; （一个表格有＆＃39;描述＆＃39;作为我需要查看的列）。我还创建了一个结果＆＃39; doctype＆＃39;带有一个值，表示稍后用于前端过滤器的表格。然后按顺序排序：

结果以searchterm
结果在中间某处包含searchterm
结果以searchterm结尾

我需要的是获取查询中每个子查询的计数：

SELECT * FROM (
    SELECT Title as title, 'docs' AS 'doctype' FROM docs 
    WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%'
UNION ALL
    SELECT Title as title, 'sheets' AS 'doctype' FROM sheets 
    WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%'
UNION ALL 
  SELECT Description AS title, 'pres' AS 'doctype' from presentations 
  WHERE status IN ('publish', 'draft', 'review') AND Description LIKE '%' :searchterm '%'
) FINAL
    ORDER BY
      CASE
        WHEN title LIKE :searchterm '%' THEN 1
        WHEN title LIKE '%' :searchterm THEN 3
        ELSE 2
      END
    LIMIT 300

还要确认在ORDER BY中使用别名（＆＃39; title＆＃39;）是可以的。

Answer 1

在子查询中添加count字段和groupby子句

<强>已更新

SELECT 
(SELECT count(*) FROM docs WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%') as 'count_docs'
,(SELECT count(*) FROM sheets WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%') as 'count_sheets'
,(SELECT count(*) FROM presentations WHERE status IN ('publish', 'draft', 'review') AND Description LIKE '%' :searchterm '%') as 'count_pres'
, FINAL.*
FROM (
    SELECT Title as title, 'docs' AS 'doctype' FROM docs 
    WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%'
UNION ALL
    SELECT Title as title, 'sheets' AS 'doctype' FROM sheets 
    WHERE status IN ('publish', 'draft', 'review') AND Title LIKE '%' :searchterm '%'
UNION ALL 
  SELECT Description AS title, 'pres' AS 'doctype' from presentations 
  WHERE status IN ('publish', 'draft', 'review') AND Description LIKE '%' :searchterm '%'
) as FINAL
    ORDER BY
      CASE
        WHEN title LIKE :searchterm '%' THEN 1
        WHEN title LIKE '%' :searchterm THEN 3
        ELSE 2
      END
    LIMIT 300

子查询计数与union all

1 个答案: