Question

情况

我来自PHP + MySQL背景，我正在迁移一个ASP网站。

之前我已经迁移了几次，但在这种情况下，我遇到了一些让我迷失方向的问题，并阻止我导入数据库。

障碍

我通过Plesk（撰写本文后的当前版本）下载了MS SQL数据库的备份。但在打开它时，我发现数字字符串，而不是SQL。因此，我无法查找和替换网站URL。

实施例

5441 5045 0000 0300 8c00 0e01 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

当我通过myLittleAdmin连接到MS SQL并导航到工具＆gt;新查询并尝试使用FIND或SEARCH命令，就像在MySQL中一样，它根本不起作用。

我在MS SQL文档中搜索类似命令但找不到任何命令。所有与我的问题相关的Stack Overflow上的问题都有大量的查询，这些查询有很多语法/代码与我的问题的简单性无关。

问题

有人能帮助我理解我在这里缺少的东西吗？

最终，我只是在寻找我编写的MS SQL代码，以便在整个数据库中搜索特定文本字符串的实例。

Answer 1

请参阅以下关于获取转储的SO帖子：How can I get a SQL dump of a SQL Server 2008 database?

从那里，找到有问题的文本，然后在确定必要的表和列后，相应地更新实际的数据库。

Answer 2

我雇了别人给我写剧本。

以下是find脚本（更新第2行，“TEXT_TO_SEARCH”）：

USE DATABASE_NAME
DECLARE @SearchStr nvarchar(100) = 'TEXT_TO_SEARCH'
DECLARE @Results TABLE (ColumnName nvarchar(370), ColumnValue nvarchar(3630))

SET NOCOUNT ON

DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')

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', 'int', 'decimal')
                AND    QUOTENAME(COLUMN_NAME) > @ColumnName
        )

        IF @ColumnName IS NOT NULL

        BEGIN
            INSERT INTO @Results
            EXEC
            (
                'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) 
                FROM ' + @TableName + ' (NOLOCK) ' +
                ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
            )
        END
    END    
END

SELECT ColumnName, ColumnValue FROM @Results

这是find and replace脚本（更新第13行）：

SET NOCOUNT ON 

DECLARE @stringToFind VARCHAR(100) 
DECLARE @stringToReplace VARCHAR(100) 
DECLARE @schema sysname 
DECLARE @table sysname 
DECLARE @count INT 
DECLARE @sqlCommand VARCHAR(8000) 
DECLARE @where VARCHAR(8000) 
DECLARE @columnName sysname 
DECLARE @object_id INT 

SET @stringToFind = 'TEXT_TO _FIND'
SET @stringToReplace = 'TEXT_TO_REPLACE' 

DECLARE TAB_CURSOR CURSOR  FOR 
SELECT   B.NAME      AS SCHEMANAME, 
         A.NAME      AS TABLENAME, 
         A.OBJECT_ID 
FROM     sys.objects A 
         INNER JOIN sys.schemas B 
           ON A.SCHEMA_ID = B.SCHEMA_ID 
WHERE    TYPE = 'U' 
ORDER BY 1 

OPEN TAB_CURSOR 

FETCH NEXT FROM TAB_CURSOR 
INTO @schema, 
     @table, 
     @object_id 

WHILE @@FETCH_STATUS = 0 
  BEGIN 
    DECLARE COL_CURSOR CURSOR FOR 
    SELECT A.NAME 
    FROM   sys.columns A 
           INNER JOIN sys.types B 
             ON A.SYSTEM_TYPE_ID = B.SYSTEM_TYPE_ID 
    WHERE  OBJECT_ID = @object_id 
           AND IS_COMPUTED = 0 
           AND B.NAME IN ('char','nchar','nvarchar','varchar','text','ntext') 

    OPEN COL_CURSOR 

    FETCH NEXT FROM COL_CURSOR 
    INTO @columnName 

    WHILE @@FETCH_STATUS = 0 
      BEGIN 
        SET @sqlCommand = 'UPDATE ' + @schema + '.' + @table + ' SET [' + @columnName 
                           + '] = REPLACE(convert(nvarchar(max),[' + @columnName + ']),''' 
                           + @stringToFind + ''',''' + @stringToReplace + ''')' 

        SET @where = ' WHERE [' + @columnName + '] LIKE ''%' + @stringToFind + '%''' 

        EXEC( @sqlCommand + @where) 

        SET @count = @@ROWCOUNT 

        IF @count > 0 
          BEGIN 
            PRINT @sqlCommand + @where 
            PRINT 'Updated: ' + CONVERT(VARCHAR(10),@count) 
            PRINT '----------------------------------------------------' 
          END 

        FETCH NEXT FROM COL_CURSOR 
        INTO @columnName 
      END 

    CLOSE COL_CURSOR 
    DEALLOCATE COL_CURSOR 

    FETCH NEXT FROM TAB_CURSOR 
    INTO @schema, 
         @table, 
         @object_id 
  END 

CLOSE TAB_CURSOR 
DEALLOCATE TAB_CURSOR

如何在MS SQL数据库中搜索特定字符串？

2 个答案: