-- 修正版全库ID字段索引创建脚本
BEGIN TRY
    BEGIN TRANSACTION;
    
    -- 创建临时表存储需要创建索引的表和字段
    CREATE TABLE #IndexCreationList (
        TableName NVARCHAR(128),
        ColumnName NVARCHAR(128)
    );
    
    -- 找出所有需要创建索引的字段
    INSERT INTO #IndexCreationList
    SELECT 
        t.name AS TableName,
        c.name AS ColumnName
    FROM sys.tables t
    JOIN sys.columns c ON t.object_id = c.object_id
    WHERE c.name LIKE '%ID'
    AND t.is_ms_shipped = 0
    AND NOT EXISTS (
        SELECT 1 FROM sys.indexes i
        JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
        WHERE i.object_id = t.object_id
        AND ic.column_id = c.column_id
        AND i.name = 'IX_' + t.name + '_' + c.name
    );
    
    -- 动态生成并执行创建索引的SQL
    DECLARE @sql NVARCHAR(MAX) = '';
    SELECT @sql = @sql + 
        'CREATE INDEX IX_' + TableName + '_' + ColumnName + 
        ' ON ' + QUOTENAME(TableName) + '(' + QUOTENAME(ColumnName) + ');' + CHAR(13)
    FROM #IndexCreationList;
    
    IF LEN(@sql) > 0
    BEGIN
        EXEC sp_executesql @sql;
        PRINT '成功创建 ' + CAST(@@ROWCOUNT AS NVARCHAR(10)) + ' 个索引';
    END
    ELSE
    BEGIN
        PRINT '没有需要创建的索引，所有ID字段索引已存在';
    END
    
    -- 验证结果
    SELECT 
        t.name AS 表名,
        i.name AS 索引名称,
        c.name AS 字段名
    FROM sys.tables t
    JOIN sys.indexes i ON t.object_id = i.object_id
    JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
    JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
    WHERE i.name LIKE 'IX_%_%ID'
    ORDER BY t.name, i.name;
    
    DROP TABLE #IndexCreationList;
    COMMIT TRANSACTION;
END TRY
BEGIN CATCH
    IF @@TRANCOUNT > 0
        ROLLBACK TRANSACTION;
        
    PRINT '错误发生: ' + ERROR_MESSAGE();
    PRINT '错误行号: ' + CAST(ERROR_LINE() AS NVARCHAR(10));
END CATCH;