where 子句中的 SQL Case 和 LIKE

Question

我一直在为这个希望这是可能的

declare @locationType varchar(50);
declare @SearchTerm NVARCHAR(100);

SELECT column1, column2
FROM whatever
WHERE
CASE @locationType
    WHEN 'location' THEN account_location LIKE @SearchTerm
    WHEN 'area' THEN Area LIKE @SearchTerm
    WHEN 'division' THEN xxx_location_division LIKE @SearchTerm
END

我从另一个相关帖子中复制了代码 here .

我收到错误:

Incorrect syntax near the keyword 'LIKE'.

Answer 1

declare @locationType varchar(50);
declare @SearchTerm NVARCHAR(100);

SELECT column1, column2
FROM whatever
WHERE
   (@locationType = 'location' AND account_location LIKE @SearchTerm)
OR
   (@locationType = 'area' AND Area LIKE @SearchTerm)
OR
   (@locationType = 'division' AND xxx_location_division LIKE @SearchTerm)

确保 @SearchTerm以 % 开头/结尾-> 或使用 '%' + @SearchTerm + '%' .

更多信息 LIKE operator .

- - 更新 - -

SELECT column1, column2
FROM whatever
WHERE
(
  CASE @locationType
     WHEN 'location' THEN account_location
     WHEN 'area' THEN Area
     WHEN 'division' THEN xxx_location_division
  END
) LIKE @SearchTerm