SQL查询字符串中的回车并最终删除回车

这会很慢，但如果是一次性的，请尝试...

select * from parameters where name like '%'+char(13)+'%' or name like '%'+char(10)+'%'

请注意，ANSI SQL 字符串连接运算符是“||”，因此可能需要：

select * from parameters where name like '%' || char(13) || '%' or name like '%' || char(10) || '%'

主要问题是删除 CR/LF。使用 replace 和 char 函数对我有用：

Select replace(replace(Name,char(10),''),char(13),'')

对于 Postgres 或 Oracle SQL，请改用 CHR 函数：

       replace(replace(Name,CHR(10),''),CHR(13),'')

在 SQL Server 中，我会使用：

WHERE CHARINDEX(CHAR(13), name) <> 0 OR CHARINDEX(CHAR(10), name) <> 0

这将搜索回车和换行。

如果您也想搜索标签，只需添加：

OR CHARINDEX(CHAR(9), name) <> 0

您还可以使用正则表达式：

SELECT * FROM Parameters WHERE Name REGEXP '\n';

这有效：从表中选择 * 列如 '%(hit enter)%'

忽略括号并按 Enter 以引入新行。

您可以创建一个函数：

CREATE FUNCTION dbo.[Check_existance_of_carriage_return_line_feed]
(
      @String VARCHAR(MAX)
)
RETURNS VARCHAR(MAX)
BEGIN
DECLARE @RETURN_BOOLEAN INT

;WITH N1 (n) AS (SELECT 1 UNION ALL SELECT 1),
N2 (n) AS (SELECT 1 FROM N1 AS X, N1 AS Y),
N3 (n) AS (SELECT 1 FROM N2 AS X, N2 AS Y),
N4 (n) AS (SELECT ROW_NUMBER() OVER(ORDER BY X.n)
FROM N3 AS X, N3 AS Y)

SELECT @RETURN_BOOLEAN =COUNT(*)
FROM N4 Nums
WHERE Nums.n<=LEN(@String) AND ASCII(SUBSTRING(@String,Nums.n,1)) 
IN (13,10)    

RETURN (CASE WHEN @RETURN_BOOLEAN >0 THEN 'TRUE' ELSE 'FALSE' END)
END
GO

然后你可以简单地运行这样的查询：

SELECT column_name, dbo.[Check_existance_of_carriage_return_line_feed] (column_name)
AS [Boolean]
FROM [table_name]

省略第一个查询中的双引号。

... LIKE '%\n%' 

这也有效

SELECT TRANSLATE(STRING_WITH_NL_CR, CHAR(10) || CHAR(13), '  ') FROM DUAL;

这样的事情似乎对我有用：

SELECT * FROM Parameters WHERE Name LIKE '%\n%'

如果你正在考虑创建一个函数，试试这个：DECLARE @schema sysname = 'dbo' , @tablename sysname = 'mvtEST' , @cmd NVarchar(2000) , @ColName sysname

    DECLARE @NewLine Table
    (ColumnName Varchar(100)
    ,Location Int
    ,ColumnValue Varchar(8000)
    )

    SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE  TABLE_SCHEMA = @schema AND TABLE_NAME =  @tablename AND DATA_TYPE LIKE '%CHAR%'

    DECLARE looper CURSOR FAST_FORWARD for
    SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = @schema AND TABLE_NAME =  @tablename AND DATA_TYPE LIKE '%CHAR%'
    OPEN looper
    FETCH NEXT FROM looper INTO @ColName

    WHILE @@fetch_status = 0
    BEGIN
    SELECT @cmd = 'select ''' +@ColName+    ''',  CHARINDEX(Char(10),  '+  @ColName +') , '+ @ColName + ' from '+@schema + '.'+@tablename +' where CHARINDEX(Char(10),  '+  @ColName +' ) > 0 or CHARINDEX(CHAR(13), '+@ColName +') > 0'
    PRINT @cmd
    INSERT @NewLine ( ColumnName, Location, ColumnValue )
    EXEC sp_executesql @cmd
    FETCH NEXT FROM looper INTO @ColName
    end
    CLOSE looper
    DEALLOCATE looper


    SELECT * FROM  @NewLine