Question

我想使用sql查询更改案例

例如，如果文本是：My nAme is iShAn halaRNkar（文本混淆，即在可能的任何地方可能包含小写或大写）

比我希望输出为：My Name Is Ishan Halarnkar

我没有在sql查询上工作过多。请帮助。

Answer 1

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

Answer 2

在任何数据库中都没有为您执行此操作的功能。你要写一个实际上对句子中每个单词进行检查的函数。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 ;

示例：

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

<强>输出：

This Is Exactly The Same!

版权：

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

希望这有帮助！

Answer 3

这个SQL应该可以工作。

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

Answer 4

首先你需要创建功能


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')

使用sql查询将小写更改为upper（title）大小写

4 个答案: