{"id":35215,"date":"2025-05-03T07:15:50","date_gmt":"2025-05-02T23:15:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35215.html"},"modified":"2025-05-03T07:15:50","modified_gmt":"2025-05-02T23:15:50","slug":"sql-server%e8%b7%a8%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%9b%b4%e5%90%8c%e5%ba%93%e5%90%8c%e5%90%8d%e8%a1%a8%e5%a2%9e%e5%8a%a0%e5%af%b9%e5%ba%94%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35215.html","title":{"rendered":"SQL server\u8de8\u670d\u52a1\u5668\u66f4\u540c\u5e93\u540c\u540d\u8868\u589e\u52a0\u5bf9\u5e94\u5b57\u6bb5"},"content":{"rendered":"

\u65b9\u6cd5\u6982\u8ff0<\/h4>\n
  • \n

    \u914d\u7f6eLinked Server：\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u8fde\u63a5\u5230\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u7684Linked Server，\u4ee5\u4fbf\u8de8\u670d\u52a1\u5668\u67e5\u8be2\u3002<\/p>\n<\/li>\n

  • \n

    \u5b9a\u671f\u68c0\u67e5\u5b57\u6bb5\u5dee\u5f02：\u4f7f\u7528SQL Server Agent\u4f5c\u4e1a\u5b9a\u671f\u6267\u884c\u811a\u672c，\u68c0\u67e5\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u8868\u5b57\u6bb5\u3002<\/p>\n<\/li>\n

  • \n

    \u751f\u6210\u5e76\u6267\u884cALTER\u8bed\u53e5：\u52a8\u6001\u751f\u6210\u5e76\u6267\u884cALTER TABLE\u8bed\u53e5，\u6dfb\u52a0\u7f3a\u5931\u5b57\u6bb5，\u5904\u7406\u6570\u636e\u7c7b\u578b\u3001NULL\u7ea6\u675f\u548c\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/li>\n

  • \n

    \u521b\u5efa\u540c\u6b65\u811a\u672c<\/p>\n<\/li>\n

  • \n

    \u4ee5\u4e0b\u811a\u672c\u68c0\u67e5\u5e76\u540c\u6b65\u5b57\u6bb5，\u9700\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u7684pubdata\u5e93\u4e2d\u6267\u884c：<\/p>\n

    DECLARE @TableName NVARCHAR(128), @ColumnName NVARCHAR(128);
    \nDECLARE @DataType NVARCHAR(128), @IsNullable NVARCHAR(3), @ColumnDefault NVARCHAR(MAX);
    \nDECLARE @CharMaxLength INT, @NumericPrecision INT, @NumericScale INT;
    \nDECLARE @Sql NVARCHAR(MAX);<\/p>\n

    — \u904d\u5386\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u6240\u6709\u8868
    \nDECLARE TableCursor CURSOR FOR
    \nSELECT TABLE_NAME
    \nFROM [Server2].[pubdata].INFORMATION_SCHEMA.TABLES
    \nWHERE TABLE_TYPE = 'BASE TABLE';<\/p>\n

    OPEN TableCursor;
    \nFETCH NEXT FROM TableCursor INTO @TableName;<\/p>\n

    WHILE @@FETCH_STATUS = 0
    \nBEGIN
    \n — \u68c0\u67e5\u7b2c\u4e00\u53f0\u662f\u5426\u5b58\u5728\u8be5\u8868
    \n IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = @TableName AND TABLE_CATALOG = 'pubdata')
    \n BEGIN
    \n — \u83b7\u53d6\u7b2c\u4e8c\u53f0\u8868\u7684\u6240\u6709\u5b57\u6bb5\u8be6\u60c5
    \n DECLARE ColumnCursor CURSOR FOR
    \n SELECT
    \n c.COLUMN_NAME,
    \n c.DATA_TYPE,
    \n c.CHARACTER_MAXIMUM_LENGTH,
    \n c.NUMERIC_PRECISION,
    \n c.NUMERIC_SCALE,
    \n c.IS_NULLABLE,
    \n c.COLUMN_DEFAULT
    \n FROM [Server2].[pubdata].INFORMATION_SCHEMA.COLUMNS c
    \n WHERE c.TABLE_NAME = @TableName;<\/p>\n

    OPEN ColumnCursor;
    \n FETCH NEXT FROM ColumnCursor INTO @ColumnName, @DataType, @CharMaxLength, @NumericPrecision, @NumericScale, @IsNullable, @ColumnDefault;<\/p>\n

    WHILE @@FETCH_STATUS = 0
    \n BEGIN
    \n — \u68c0\u67e5\u7b2c\u4e00\u53f0\u662f\u5426\u5b58\u5728\u8be5\u5b57\u6bb5
    \n IF NOT EXISTS (
    \n SELECT *
    \n FROM INFORMATION_SCHEMA.COLUMNS
    \n WHERE TABLE_NAME = @TableName
    \n AND COLUMN_NAME = @ColumnName
    \n AND TABLE_CATALOG = 'pubdata'
    \n )
    \n BEGIN
    \n — \u6784\u9020\u6570\u636e\u7c7b\u578b（\u5904\u7406\u957f\u5ea6\u3001\u7cbe\u5ea6\u7b49）
    \n DECLARE @DataTypeFull NVARCHAR(128) = @DataType;
    \n IF @DataType IN ('varchar', 'char', 'nvarchar', 'nchar', 'binary', 'varbinary')
    \n SET @DataTypeFull = @DataType + '(' + CASE WHEN @CharMaxLength = -1 THEN 'MAX' ELSE CAST(@CharMaxLength AS NVARCHAR) END + ')';
    \n ELSE IF @DataType IN ('decimal', 'numeric')
    \n SET @DataTypeFull = @DataType + '(' + CAST(@NumericPrecision AS NVARCHAR) + ',' + CAST(@NumericScale AS NVARCHAR) + ')';
    \n ELSE IF @DataType IN ('datetime2', 'datetimeoffset', 'time')
    \n SET @DataTypeFull = @DataType + '(' + CAST(@NumericScale AS NVARCHAR) + ')';<\/p>\n

    — \u5904\u7406\u9ed8\u8ba4\u503c（\u53bb\u9664\u62ec\u53f7）
    \n DECLARE @CleanDefault NVARCHAR(MAX) = NULL;
    \n IF @ColumnDefault IS NOT NULL
    \n BEGIN
    \n SET @CleanDefault = SUBSTRING(@ColumnDefault, 2, LEN(@ColumnDefault) – 2);
    \n — \u5b57\u7b26\u4e32\u7c7b\u578b\u6dfb\u52a0\u5f15\u53f7
    \n IF @DataType IN ('char', 'varchar', 'nchar', 'nvarchar', 'text', 'ntext')
    \n SET @CleanDefault = '''' + REPLACE(@CleanDefault, '''', '''''') + '''';
    \n END<\/p>\n

    — \u751f\u6210ALTER\u8bed\u53e5
    \n SET @Sql = 'ALTER TABLE ' + QUOTENAME(@TableName) + ' ADD ' + QUOTENAME(@ColumnName) + ' ' + @DataTypeFull;
    \n IF @IsNullable = 'NO'
    \n SET @Sql += ' NOT NULL';
    \n ELSE
    \n SET @Sql += ' NULL';<\/p>\n

    IF @CleanDefault IS NOT NULL
    \n BEGIN
    \n DECLARE @DefaultName NVARCHAR(128) = 'DF_' + @TableName + '_' + @ColumnName;
    \n SET @Sql += ' CONSTRAINT ' + QUOTENAME(@DefaultName) + ' DEFAULT ' + @CleanDefault;
    \n END<\/p>\n

    — \u6267\u884c\u5e76\u6355\u83b7\u9519\u8bef
    \n BEGIN TRY
    \n EXEC sp_executesql @Sql;
    \n PRINT '\u6210\u529f\u6dfb\u52a0\u5b57\u6bb5: ' + @ColumnName + ' \u5230\u8868 ' + @TableName;
    \n END TRY
    \n BEGIN CATCH
    \n PRINT '\u9519\u8bef: \u6dfb\u52a0\u5b57\u6bb5 ' + @ColumnName + ' \u5931\u8d25 – ' + ERROR_MESSAGE();
    \n END CATCH
    \n END<\/p>\n

    FETCH NEXT FROM ColumnCursor INTO @ColumnName, @DataType, @CharMaxLength, @NumericPrecision, @NumericScale, @IsNullable, @ColumnDefault;
    \n END<\/p>\n

    CLOSE ColumnCursor;
    \n DEALLOCATE ColumnCursor;
    \n END<\/p>\n

    FETCH NEXT FROM TableCursor INTO @TableName;
    \nEND<\/p>\n

    CLOSE TableCursor;
    \nDEALLOCATE TableCursor; <\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":"

    \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb833\u6b21\uff0c\u70b9\u8d5e22\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u914d\u7f6eLinked Server\uff1a\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u8fde\u63a5\u5230\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u7684Linked Server\uff0c\u4ee5\u4fbf\u8de8\u670d\u52a1\u5668\u67e5\u8be2\u3002\u5b9a\u671f\u68c0\u67e5\u5b57\u6bb5\u5dee\u5f02\uff1a\u4f7f\u7528SQL Server Agent\u4f5c\u4e1a\u5b9a\u671f\u6267\u884c\u811a\u672c\uff0c\u68c0\u67e5\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u8868\u5b57\u6bb5\u3002\u751f\u6210\u5e76\u6267\u884cALTER\u8bed\u53e5\uff1a\u52a8\u6001\u751f\u6210\u5e76\u6267\u884cALTER TABLE\u8bed\u53e5\uff0c\u6dfb\u52a0\u7f3a\u5931\u5b57\u6bb5\uff0c\u5904\u7406\u6570\u636e\u7c7b\u578b\u3001NULL\u7ea6\u675f\u548c\u9ed8\u8ba4\u503c\u3002\u521b\u5efa\u540c\u6b65\u811a\u672c\u4ee5\u4e0b\u811a\u672c\u68c0\u67e5\u5e76\u540c\u6b65\u5b57\u6bb5\uff0c\u9700\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u7684pubdata– \u904d\u5386\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u6240\u6709\u8868BEGIN– \u68c0\u67e5\u7b2c\u4e00\u53f0\u662f\u5426\u5b58\u5728\u8be5\u8868BEGIN\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[100,43,44],"topic":[],"class_list":["post-35215","post","type-post","status-publish","format-standard","hentry","category-server","tag-100","tag-43","tag-44"],"yoast_head":"\nSQL server\u8de8\u670d\u52a1\u5668\u66f4\u540c\u5e93\u540c\u540d\u8868\u589e\u52a0\u5bf9\u5e94\u5b57\u6bb5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/35215.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SQL server\u8de8\u670d\u52a1\u5668\u66f4\u540c\u5e93\u540c\u540d\u8868\u589e\u52a0\u5bf9\u5e94\u5b57\u6bb5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb833\u6b21\uff0c\u70b9\u8d5e22\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u914d\u7f6eLinked Server\uff1a\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u8fde\u63a5\u5230\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u7684Linked Server\uff0c\u4ee5\u4fbf\u8de8\u670d\u52a1\u5668\u67e5\u8be2\u3002\u5b9a\u671f\u68c0\u67e5\u5b57\u6bb5\u5dee\u5f02\uff1a\u4f7f\u7528SQL Server Agent\u4f5c\u4e1a\u5b9a\u671f\u6267\u884c\u811a\u672c\uff0c\u68c0\u67e5\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u8868\u5b57\u6bb5\u3002\u751f\u6210\u5e76\u6267\u884cALTER\u8bed\u53e5\uff1a\u52a8\u6001\u751f\u6210\u5e76\u6267\u884cALTER TABLE\u8bed\u53e5\uff0c\u6dfb\u52a0\u7f3a\u5931\u5b57\u6bb5\uff0c\u5904\u7406\u6570\u636e\u7c7b\u578b\u3001NULL\u7ea6\u675f\u548c\u9ed8\u8ba4\u503c\u3002\u521b\u5efa\u540c\u6b65\u811a\u672c\u4ee5\u4e0b\u811a\u672c\u68c0\u67e5\u5e76\u540c\u6b65\u5b57\u6bb5\uff0c\u9700\u5728\u7b2c\u4e00\u53f0\u670d\u52a1\u5668\u7684pubdata-- \u904d\u5386\u7b2c\u4e8c\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u6240\u6709\u8868BEGIN-- \u68c0\u67e5\u7b2c\u4e00\u53f0\u662f\u5426\u5b58\u5728\u8be5\u8868BEGIN\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/35215.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-02T23:15:50+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35215.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/35215.html\",\"name\":\"SQL server\u8de8\u670d\u52a1\u5668\u66f4\u540c\u5e93\u540c\u540d\u8868\u589e\u52a0\u5bf9\u5e94\u5b57\u6bb5 - 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