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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