CREATE Function GetItemScore(Stand_ Ans varchar(10), Custor_Ans varchar(10)) returns int begin declare i int default 1; if CHAR_LENGTH(Custor_Ans) >CHAR_LENGTH(Stand_Ans) or Custor_Ans IS NULL then return 0; end if; while i<=CHAR_LENGTH(Custor_Ans) do if locate(SubString(Custor_Ansi,1),Stand_Ans)<1 then return 0; end if; Set i=i+ 1; end while; return CHAR LENGTH(Custor ans); end:
时间: 2023-11-28 18:48:42 浏览: 150
这是一个 SQL Server 的 T-SQL 语言的函数,函数名为 GetItemScore,接受两个参数:Stand_Ans 和 Custor_Ans,均为 varchar(10) 类型。函数返回一个整数值。
函数的逻辑是判断 Custor_Ans 是否与 Stand_Ans 相等,如果相等则返回 Custor_Ans 的长度;如果 Custor_Ans 为 NULL 或长度比 Stand_Ans 大,则返回0;如果 Custor_Ans 中存在任何一个字符不在 Stand_Ans 中,则返回0。
需要注意的是,在函数中有一个拼写错误,应该将 Custor_Ansi 改为 Custor_Ans[i]。正确的函数代码如下:
```sql
CREATE FUNCTION GetItemScore (Stand_Ans varchar(10), Custor_Ans varchar(10))
RETURNS int
BEGIN
DECLARE i int DEFAULT 1;
IF CHAR_LENGTH(Custor_Ans) > CHAR_LENGTH(Stand_Ans) OR Custor_Ans IS NULL THEN
RETURN 0;
END IF;
WHILE i <= CHAR_LENGTH(Custor_Ans) DO
IF LOCATE(SUBSTRING(Custor_Ans, i, 1), Stand_Ans) < 1 THEN
RETURN 0;
END IF;
SET i = i + 1;
END WHILE;
RETURN CHAR_LENGTH(Custor_Ans);
END;
```
希望对你有所帮助!
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