具有union的子查詢計數全部

Question

我的查詢從3個表中選擇數據，將結果設置爲'title'（一個表具有'description'作爲我需要查看的列）。我還創建了一個結果'doctype'，其值表示它後來發現哪個表用於前端過濾器。然後，它通過訂單：

1. 結果與搜索關鍵詞開始
2. 結果中包含搜索關鍵詞中間的某個位置
3. 結果與搜索關鍵詞結束

我需要的是得到計數爲每個查詢中的子查詢：

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 

並且還確認可以使用al i在ORDER BY中的名稱（'標題'）。

Answer 1

添加一個計數域和GROUPBY子句中的子查詢

修訂

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