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一、引言&背景   完成度：100%

a) 应对问题&场景

查询DB中所有索引的相关信息。

b) 解决原理&方法

SELECT CASE           WHEN t.[type] = 'U' THEN               '表'           WHEN t.[type] = 'V' THEN               '视图'       END AS '类型',       SCHEMA_NAME(t.schema_id) + '.' + t.[name] AS '(表/视图)名称',       i.[name] AS 索引名称,       SUBSTRING(column_names, 1, LEN(column_names) - 1) AS '列名',       CASE           WHEN i.[type] = 1 THEN               '聚集索引'           WHEN i.[type] = 2 THEN               '非聚集索引'           WHEN i.[type] = 3 THEN               'XML索引'           WHEN i.[type] = 4 THEN               '空间索引'           WHEN i.[type] = 5 THEN               '聚簇列存储索引'           WHEN i.[type] = 6 THEN               '非聚集列存储索引'           WHEN i.[type] = 7 THEN               '非聚集哈希索引'       END AS '索引类型',       CASE           WHEN i.is_unique = 1 THEN               '唯一'           ELSE               '不唯一'       END AS '索引是否唯一'FROM sys.objects t    INNER JOIN sys.indexes i        ON t.object_id = i.object_id    CROSS APPLY(    SELECT col.[name] + ', '    FROM sys.index_columns ic        INNER JOIN sys.columns col            ON ic.object_id = col.object_id               AND ic.column_id = col.column_id    WHERE ic.object_id = t.object_id          AND ic.index_id = i.index_id    ORDER BY col.column_id    FOR XML PATH('')) D(column_names)WHERE t.is_ms_shipped <> 1      AND index_id > 0ORDER BY i.[name];

二、声明与参考资料   完成度：100%

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