Sql e键

希望你觉得它有用

是否必须在SQL Server中执行此操作？我不会把它与数据库服务器联系起来，而是通过表单验证甚至是视图来完成的。PostgreSQL用户：UPDATE[table]SET your_col=initcap（lower（your_col））；这不是一个Postgre问题，但无论如何它都会首先出现在google上。UPPER（@Char）！=”的含义是什么S'？为什么我们要使用它？与“S”的比较是为了确保在编写诸如

之类的单词时，S没有大写，这是因为

函数虽然有点慢，但工作正常。如何提高性能？对于后面没有

S

的单词不起作用。例如，

我是

，

你是

，等等。当输入为4000并且也返回时，为什么OutputString是255？注意，每一列都应该删去空格或空格。另外，你没有在第一个字母上加字母。这只会大写字母的第一个字母column@Amrik正如上面所评论的那样，我想你的意思是：

从[tablename]

中选择UPPER（左（列，1））+lower（右（列，len（列）-1））使用

lower（stuff（列，1,1'））

而不是

lower（右（列，len（列）-1））

“INITCAP”不是内置函数-您需要提供函数定义。我在Oracle MYSQL中使用INITCAP，它工作得非常好是的，但问题特别指出SQL Server。SQL Server中第一个字符大写的非常简单的方法请给出一些解释，以便理解解决方案Hi@Harsha B，我解释过，如果有任何疑问的话。你好，安德鲁。请提供解决方案的说明，并尝试格式化代码。请注意字符串分割函数的非保证顺序。我会在FROM行之后添加CHARINDEX的订单（值，@v）

CREATE FUNCTION [dbo].[InitCap] ( @InputString varchar(4000) ) 
RETURNS VARCHAR(4000)
AS
BEGIN

DECLARE @Index          INT
DECLARE @Char           CHAR(1)
DECLARE @PrevChar       CHAR(1)
DECLARE @OutputString   VARCHAR(255)

SET @OutputString = LOWER(@InputString)
SET @Index = 1

WHILE @Index <= LEN(@InputString)
BEGIN
    SET @Char     = SUBSTRING(@InputString, @Index, 1)
    SET @PrevChar = CASE WHEN @Index = 1 THEN ' '
                         ELSE SUBSTRING(@InputString, @Index - 1, 1)
                    END

    IF @PrevChar IN (' ', ';', ':', '!', '?', ',', '.', '_', '-', '/', '&', '''', '(')
    BEGIN
        IF @PrevChar != '''' OR UPPER(@Char) != 'S'
            SET @OutputString = STUFF(@OutputString, @Index, 1, UPPER(@Char))
    END

    SET @Index = @Index + 1
END

RETURN @OutputString

END
GO

CREATE FUNCTION [widget].[properCase](@string varchar(8000)) RETURNS varchar(8000) AS
BEGIN   
    SET @string = LOWER(@string)
    DECLARE @i INT
    SET @i = ASCII('a')
    WHILE @i <= ASCII('z')
    BEGIN
        SET @string = REPLACE( @string, ' ' + CHAR(@i), ' ' + CHAR(@i-32))
        SET @i = @i + 1
    END
    SET @string = CHAR(ASCII(LEFT(@string, 1))-32) + RIGHT(@string, LEN(@string)-1)
    RETURN @string
END

create function [dbo].InitCap (@value varchar(max))
returns varchar(max) as
begin

    declare
        @separator char(1) = ' ',
        @result varchar(max) = '';

    with r as (
        select value, cast(null as varchar(max)) [x], cast('' as varchar(max)) [char], 0 [no] from (select rtrim(cast(@value as varchar(max))) [value]) as j
        union all
        select right(value, len(value)-case charindex(@separator, value) when 0 then len(value) else charindex(@separator, value) end) [value]
        , left(r.[value], case charindex(@separator, r.value) when 0 then len(r.value) else abs(charindex(@separator, r.[value])-1) end ) [x]
        , left(r.[value], 1)
        , [no] + 1 [no]
        from r where value > '')

    select @result = @result +
    case
        when ascii([char]) between 97 and 122 
            then stuff(x, 1, 1, char(ascii([char])-32))
        else x
    end + @separator
    from r where x is not null;

    set @result = rtrim(@result);

    return @result;
end

select 
        LEFT(column, 1)+ lower(RIGHT(column, len(column)-1) )
     from [tablename]

Select INITCAP(column_name) from table_name;

CREATE FUNCTION dbo.InitCap(@v AS VARCHAR(MAX))
RETURNS TABLE
AS
RETURN 
WITH a AS (
    SELECT (
        SELECT UPPER(LEFT(value, 1)) + LOWER(SUBSTRING(value, 2, LEN(value))) AS 'data()'
        FROM string_split(@v, ' ')
        ORDER BY CHARINDEX(value,@v)
        FOR XML PATH (''), TYPE) ret)

SELECT CAST(a.ret AS varchar(MAX)) ret from a
GO

BEGIN
DECLARE @string varchar(100) = 'asdsadsd asdad asd'
DECLARE @ResultString varchar(200) = ''
DECLARE @index int = 1
DECLARE @flag bit = 0
DECLARE @temp varchar(2) = ''
WHILE (@Index <LEN(@string)+1)
BEGIN
    SET @temp = SUBSTRING(@string, @Index-1, 1)
    --select @temp
    IF @temp = ' ' OR @index = 1
        BEGIN
            SET @ResultString = @ResultString + UPPER(SUBSTRING(@string, @Index, 1))
        END
    ELSE
        BEGIN

            SET @ResultString = @ResultString + LOWER(SUBSTRING(@string, @Index, 1)) 
        END 

    SET @Index = @Index+ 1--increase the index
END
SELECT @ResultString

SELECT 
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(

UPPER(LEFT(City,1))+LOWER(SUBSTRING(City,2,LEN(City)))

,' a', ' A')
,' b', ' B')
,' c', ' C')
,' d', ' D')
,' e', ' E')
,' f', ' F')
,' g', ' G')
,' h', ' H')
,' i', ' I')
,' j', ' J')
,' k', ' K')
,' l', ' L')
,' m', ' M')
,' n', ' N')
,' o', ' O')
,' p', ' P')
,' q', ' Q')
,' r', ' R')
,' s', ' S')
,' t', ' T')
,' u', ' U')
,' v', ' V')
,' w', ' W')
,' x', ' X')
,' y', ' Y')
,' z', ' Z')


FROM [Dictionaries].[dbo].[Cities]
  WHERE Country = 'US' AND City like '% %'
  ORDER BY City

declare @index int=0
declare @char as varchar(1)=' '
declare @prevCharIsSpace as bit=1
declare @Result as varchar(100)=''

set @input=UPPER(LEFT(@input,1))+LOWER(SUBSTRING(@input, 2, LEN(@input)))
set @index=PATINDEX('% _%',@input)
if @index=0
    set @index=len(@input)
set @Result=substring(@input,0,@index+1)

WHILE (@index < len(@input))
BEGIN
    SET @index = @index + 1
    SET @char=substring(@input,@index,1)
    if (@prevCharIsSpace=1)
    begin
        set @char=UPPER(@char)
        if (@char=' ')
            set @char=''
    end

    if (@char=' ')
        set @prevCharIsSpace=1
    else
        set @prevCharIsSpace=0

    set @Result=@Result+@char
    --print @Result
END
--print @Result
return @Result

select UPPER(left(fname,1))+SUBSTRING(fname,2,LEN(fname)) as fname
FROM [dbo].[akhil]

SQL> select INITCAP(dname) from department;

INITCAP(DNAME)
--------------------------------------------------
Sales
Management
Production
Development

IF OBJECT_ID ('dbo.fnCapitalizeFirstLetterAndChangeDelimiter') IS NOT NULL
    DROP FUNCTION dbo.fnCapitalizeFirstLetterAndChangeDelimiter
GO

CREATE FUNCTION [dbo].[fnCapitalizeFirstLetterAndChangeDelimiter] (@string NVARCHAR(MAX), @delimiter NCHAR(1), @new_delimeter NCHAR(1))
RETURNS NVARCHAR(MAX)
AS 
BEGIN
    DECLARE @result NVARCHAR(MAX)
    SELECT @result = '';
    IF (LEN(@string) > 0)
        DECLARE @curr INT
        DECLARE @next INT
        BEGIN
            SELECT @curr = 1
            SELECT @next = CHARINDEX(@delimiter, @string)
            WHILE (LEN(@string) > 0)
                BEGIN
                    SELECT @result = 
                        @result + 
                        CASE WHEN LEN(@result) > 0 THEN @new_delimeter ELSE '' END +
                        UPPER(SUBSTRING(@string, @curr, 1)) + 
                        CASE 
                            WHEN @next <> 0 
                            THEN LOWER(SUBSTRING(@string, @curr+1, @next-2))
                            ELSE LOWER(SUBSTRING(@string, @curr+1, LEN(@string)-@curr))
                        END
                    IF (@next > 0)
                        BEGIN
                            SELECT @string = SUBSTRING(@string, @next+1, LEN(@string)-@next)
                            SELECT @next = CHARINDEX(@delimiter, @string)
                        END
                    ELSE
                        SELECT @string = ''
                END
        END
    RETURN @result
END
GO

CREATE FUNCTION [dbo].[InitCap](@Text NVARCHAR(MAX))
RETURNS NVARCHAR(MAX)
AS
BEGIN
    RETURN STUFF((
        SELECT ' ' + UPPER(LEFT(s.value,1)) + LOWER(SUBSTRING(s.value,2,LEN(s.value)))
        FROM OPENJSON('["' + REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(@Text,'\','\\'),'"','\"'),CHAR(9),'\t'),CHAR(10),'\n'),' ','","') + '"]') s
        ORDER BY s.[key]
    FOR XML PATH(''),TYPE).value('(./text())[1]','NVARCHAR(MAX)'),1,1,'');
END

;WITH StudentList(Name) AS (
      SELECT CONVERT(varchar(50), 'Carl-VAN')
UNION SELECT 'Dean o''brian'
UNION SELECT 'Andrew-le-Smith'
UNION SELECT 'Eddy thompson'
UNION SELECT 'BOBs-your-Uncle'
), Student AS (
    SELECT CONVERT(varchar(50), UPPER(LEFT(Name, 1)) + LOWER(SUBSTRING(Name, 2, LEN(Name)))) Name, 
           pos = PATINDEX('%[-'' ]%', Name)
    FROM StudentList
    UNION ALL
    SELECT CONVERT(varchar(50), LEFT(Name, pos) + UPPER(SUBSTRING(Name, pos + 1, 1)) + SUBSTRING(Name, pos + 2, LEN(Name))) Name, 
           pos = CASE WHEN PATINDEX('%[-'' ]%', RIGHT(Name, LEN(Name) - pos)) = 0 THEN 0 ELSE pos + PATINDEX('%[-'' ]%', RIGHT(Name, LEN(Name) - pos)) END
    FROM Student
    WHERE pos > 0
)
SELECT Name
FROM Student 
WHERE pos = 0
ORDER BY Name 

GO
CREATE FUNCTION [dbo].[Capitalize](@text NVARCHAR(MAX)) RETURNS NVARCHAR(MAX) AS
BEGIN
    DECLARE @result NVARCHAR(MAX) = '';
    DECLARE @c NVARCHAR(1);
    DECLARE @i INT = 1;
    DECLARE @isPrevSpace BIT = 1;

    WHILE @i <= LEN(@text)
    BEGIN
        SET @c = SUBSTRING(@text, @i, 1);
        SET @result += IIF(@isPrevSpace = 1, UPPER(@c), LOWER(@c));
        SET @isPrevSpace = IIF(@c LIKE '[    -]', 1, 0);
        SET @i += 1;
    END
    RETURN @result;
END
GO

DECLARE @sentence NVARCHAR(100) = N'i-thINK-this    soLUTION-works-LiKe-a charm';
PRINT dbo.Capitalize(@sentence);
-- I-Think-This Solution-Works-Like-A Charm

DECLARE @Name VARCHAR(10) = 'merin';

SELECT @Name AS Name, REPLACE(@Name, LEFT(@Name, 1),  UPPER(LEFT(@Name, 1))) AS CapitalizedName

select ID,Name
,string_agg(concat(upper(substring(value,1,1)),lower(substring(value,2,len(value)-1))),' ') as ModifiedName 
from Table_Customer 
cross apply String_Split(replace(trim(Name),'  ',' '),' ')
where Name is not null
group by ID,Name;