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 > 0
ORDER BY i.[name];

二、声明与参考资料   完成度：100%

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