1

我想使用 sql 查询更改大小写

例如，如果文本是：（My nAme is iShAn halaRNkar文本混乱，即它可能在句子中的任何位置包含小写或大写）

比我想要的输出是：My Name Is Ishan Halarnkar

我对sql查询的工作不多。请帮忙。

4

4 回答 4

6

这是另一个 Microsoft SQL 函数：

 CREATE FUNCTION PROPERCASE(@TEXT AS VARCHAR(MAX))
RETURNS VARCHAR(MAX)
AS
BEGIN
   DECLARE @RESET BIT;
   DECLARE @STR VARCHAR(MAX);
   DECLARE @I INT;
   DECLARE @C CHAR(1);

   SELECT @RESET = 1, @I=1, @STR = '';

   WHILE (@I <= LEN(@TEXT))
    SELECT @C= SUBSTRING(@TEXT,@I,1),
               @STR = @STR + CASE WHEN @RESET=1 THEN UPPER(@C) ELSE LOWER(@C) END,
               @RESET = CASE WHEN @C LIKE '[A-ZA-Z]' THEN 0 ELSE 1 END,
               @I = @I +1
   RETURN @STR
END
于 2014-02-25T19:41:00.123 回答
3

在为您执行此操作的任何数据库中都没有此类功能。您必须编写一个函数来实际检查句子中的每个单词。请检查以下解决方案：

mysql: 

DELIMITER //

    CREATE FUNCTION CAP_FIRST (input VARCHAR(255))

    RETURNS VARCHAR(255)

    DETERMINISTIC

    BEGIN
        DECLARE len INT;
        DECLARE i INT;

        SET len   = CHAR_LENGTH(input);
        SET input = LOWER(input);
        SET i = 0;

        WHILE (i < len) DO
            IF (MID(input,i,1) = ' ' OR i = 0) THEN
                IF (i < len) THEN
                    SET input = CONCAT(
                        LEFT(input,i),
                        UPPER(MID(input,i + 1,1)),
                        RIGHT(input,len - i - 1)
                    );
                END IF;
            END IF;
            SET i = i + 1;
        END WHILE;

        RETURN input;
    END//

DELIMITER ;

例子：

SELECT CAP_FIRST('this is exACtly tHe same!')

输出：

This Is Exactly The Same!

版权：

http://joezack.com/2008/10/20/mysql-capitalize-function/

希望这可以帮助！

于 2013-05-09T09:32:16.657 回答
1

该 SQL 应该可以工作。

SELECT UPPER(LEFT(<ColumnName>, 1)) + LOWER(RIGHT(<ColumnName>,LEN(<ColumnName>)-1)) FROM {YourTableName}

于 2013-05-09T09:05:48.263 回答
1

首先你需要创建函数


CREATE FUNCTION ProperCase(@OriginalText VARCHAR(8000))
RETURNS VARCHAR(8000)  
BEGIN 
DECLARE @CleanedText VARCHAR(8000) 
;with
  a1 as (select 1 as N union all select 1 union all
         select 1      union all select 1 union all
         select 1      union all select 1 union all
         select 1      union all select 1 union all
         select 1      union all select 1),
  a2 as (select 1 as N from a1 as a cross join a1 as b),
  a3 as (select 1 as N from a2 as a cross join a2 as b),
  a4 as (select 1 as N from a3 as a cross join a2 as b),
  Tally as (select top (len(@OriginalText)) row_number() over (order by N) as N from a4)

SELECT @CleanedText = ISNULL(@CleanedText,'') +  
     --first char is always capitalized?
CASE WHEN Tally.N = 1 THEN UPPER(SUBSTRING(@OriginalText,Tally.N,1))
     WHEN SUBSTRING(@OriginalText,Tally.N -1,1) = ' '  THEN UPPER(SUBSTRING(@OriginalText,Tally.N,1))
     ELSE LOWER(SUBSTRING(@OriginalText,Tally.N,1))
END

FROM Tally           WHERE Tally.N

Now you just use this function 

select dbo.ProperCase('My nAme is iShAn halaRNkar')

于 2013-05-09T12:22:53.667 回答