Question

我正在编写下面的函数来返回Suffix传递名称作为参数。我将名称后缀exsist的可能情况作为公共表表达式并尝试与之进行比较。任何人都可以向我解释这样做的正确方法。

  Alter function S (@Name varchar(100))
returns varchar(25)
as 
begin
declare @Suffix varchar(25)
WITH SearchTerms(Term)
     AS (SELECT ' I '
         UNION ALL
         SELECT ' II '
         UNION ALL
         SELECT ' III '
         UNION All
         SELECT ' MD '
          UNION All
         SELECT ' M.D '
          UNION All
         SELECT ' M.D. '
          UNION All
         SELECT ' D.O '
           UNION All
         SELECT ' D.O. '
           UNION All
         SELECT ' DO '
         )  ;

 set @Suffix = (select Term from SearchTerms where Charindex(Term,@Name) > 0)
 return @Suffix

 end

错误讯息。

Msg 319, Level 15, State 1, Procedure S, Line 6
Incorrect syntax near the keyword 'with'. If this statement is a common table expression, 
an xmlnamespaces clause or a change tracking context clause, the previous statement must 
be terminated with a semicolon.

Answer 1

我现在看到了，你的CTE声明的 end 有一个分号。你不能这样做，因为它终止了声明。试试这个：

ALTER FUNCTION dbo.S(@Name varchar(100))
RETURNS VARCHAR(25)
AS
BEGIN
    DECLARE @Suffix VARCHAR(25);

    WITH SearchTerms(Term) AS 
    (
      SELECT ' I '
      UNION ALL SELECT ' II '
      UNION ALL SELECT ' III '
      UNION ALL SELECT ' MD '
      UNION ALL SELECT ' M.D '
      UNION ALL SELECT ' M.D. '
      UNION ALL SELECT ' D.O '
      UNION ALL SELECT ' D.O. '
      UNION ALL SELECT ' DO '
    )
    SELECT @Suffix = Term 
        FROM SearchTerms 
        WHERE CHARINDEX(Term, ' ' + @Name + ' ') > 0;

    RETURN (LTRIM(RTRIM(@Suffix)));
END
GO

编辑基于新信息，这是一个返回所有结果的表值函数：

CREATE FUNCTION dbo.T
(
    @Name VARCHAR(100)
)
RETURNS TABLE
AS
    RETURN
    (
        SELECT 
            Term = CONVERT(VARCHAR(25), LTRIM(RTRIM(Term)))
        FROM
        (
            SELECT Term = ' I '
            UNION ALL SELECT ' II '
            UNION ALL SELECT ' III '
            UNION ALL SELECT ' MD '
            UNION ALL SELECT ' M.D '
            UNION ALL SELECT ' M.D. '
            UNION ALL SELECT ' D.O '
            UNION ALL SELECT ' D.O. '
            UNION ALL SELECT ' DO '
        ) AS Terms
        WHERE CHARINDEX(Term, ' ' + @Name + ' ') > 0
    );
GO

SELECT Term FROM dbo.T('Terry Allen MD III');

CTE出错。任何人都可以帮我纠正以下错误

1 个答案: