所有数据库中的SQL搜索和替换

Posted 2021-02-25

Stored Procedure for search and replace a string in all fields of all tables of one DataBase

CREATE Proc SearchAndReplace
(
    @SearchStr nVarChar(100),
    @ReplaceStr nVarChar(100)
)
AS
BEGIN
    SET NoCount ON
 
    DECLARE @TableName  nVarChar(256), 
            @ColumnName nVarChar(128), 
            @SearchStr2 nVarChar(110), 
            @SQL        nVarChar(4000),
            @RCTR       INT
 
    SET @TableName  =   ''
    SET @SearchStr2 =   QuoteName('%' + @SearchStr + '%','''')
    SET @RCTR       =   0
 
    While @TableName IS NOT NULL
    BEGIN
        SET @ColumnName = ''
        SET @TableName  = 
        (
            SELECT  MIN(QuoteName(TABLE_SCHEMA) + '.' + QuoteName(TABLE_NAME))
            FROM    INFORMATION_SCHEMA.Tables
            WHERE   Table_TYPE = 'BASE Table'
            AND     QuoteName(TABLE_SCHEMA) + '.' + QuoteName(TABLE_NAME) > @TableName
            AND     ObjectProperty  (
                                        Object_Id(QuoteName(TABLE_SCHEMA) + '.' + QuoteName(TABLE_NAME)), 
                                        'IsMSShipped'
                                     ) = 0
        )
 
        While (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
        BEGIN
            SET @ColumnName =
            (
                SELECT  MIN(QuoteName(COLUMN_NAME))
                FROM    INFORMATION_SCHEMA.COLUMNS
                WHERE   TABLE_SCHEMA    =   PARSENAME(@TableName, 2)
                AND     TABLE_NAME      =   PARSENAME(@TableName, 1)
                AND     DATA_TYPE       IN  ('char', 'VarChar', 'nchar', 'nVarChar')
                AND     QuoteName(COLUMN_NAME) > @ColumnName
            )
 
            IF @ColumnName IS NOT NULL
            BEGIN
                SET @SQL    =   'Update ' + @TableName + 
                                    ' Set ' + @ColumnName + ' = ' +
                                        'Replace(' + @ColumnName + ', ' + QuoteName(@SearchStr, '''') + ', ' + QuoteName(@ReplaceStr, '''') + ') ' +
                                'Where ' + @ColumnName + ' Like ' + @SearchStr2
                EXEC (@SQL)
 
                SET @RCTR = @RCTR + @@ROWCOUNT
            END
        END    
    END
 
    SELECT 'Replaced ' + CAST(@RCTR AS VARCHAR) + ' occurence(s)' AS 'Outcome'
 
END