我正在尝试在 SQL 的内联表值函数中使用 IF else If 逻辑,并根据该逻辑返回一个包含表。但我遇到了 IF Else IF 块的语法问题。谢谢您的帮助。因为我无法对包含表中的列进行参数化,所以我不得不求助于使用 if else 语句。这是代码。谢谢。
我越来越
消息 156,级别 15,状态 1,过程 FullTextSearch,第 17 行关键字“IF”附近的语法不正确。
ALTER FUNCTION [dbo].[FullTextSearch]
(
@Columns nvarchar(100), @SearchPhrase nvarchar(100)
)
RETURNS TABLE
AS
RETURN
IF (@Columns='Title')
BEGIN
SELECT *
from projects as P inner join
containstable(PROJECTS, Title, @SearchPhrase) as K
on P.project_id = K.[KEY]
END
ELSE IF (@Columns='Project_Details')
BEGIN
SELECT *
from projects as P inner join
containstable(PROJECTS, Project_Details, @SearchPhrase) as K
on P.project_id = K.[KEY]
END
ELSE IF (@Columns='Contact_Info')
BEGIN
SELECT *
from projects as P inner join
containstable(PROJECTS, Contact_Info, @SearchPhrase) as K
on P.project_id = K.[KEY]
END
ELSE IF (@Columns='Project_Description')
BEGIN
SELECT *
from projects as P inner join
containstable(PROJECTS, Project_Description, @SearchPhrase) as K
on P.project_id = K.[KEY]
END
ELSE -- (@Columns='All')
BEGIN
SELECT *
from projects as P inner join
containstable(PROJECTS, (Title, Project_Details, Contact_Info, Project_Description), @SearchPhrase) as K
on P.project_id = K.[KEY]
END