Query below lists table indexes.
Query
select  tabschema concat '.' concat tabname as table,
    iid as index_id,
    case uniquerule 
        when 'P' then 'Primary key'
        when 'U' then 'Unique'
        when 'D' then 'Nonunique'
    end as  type,
    indname as index_name,
    replace(substring(colnames,2,length(colnames)),'+',',') as columns, 
    case indextype 
        when 'BLOK' then 'Block index'
        when 'CLUS' then 'Clustering index'
        when 'DIM' then 'Dimension block index'
        when 'REG' then 'Regular index'
        when 'XPTH' then 'XML path index'
        when 'XRGN' then 'XML region index'
        when 'XVIL' then 'Index over XML column (logical)'
        when 'XVIP' then 'Index over XML column (physical)'
    end as index_type
from syscat.indexes 
where indschema not like 'SYS%'
order by table, index_id
Columns
- table - name of table index is defined for
- index_id - id of index (unique in table)
- type
- Primary key
- Unique
- Nonunique
 
- index_name - index name
- columns - list of index columns separated with "+"
- index_type - index type:
- Block index
- Clustering index
- Dimension block index
- Regular index
- XML path index
- XML region index
- Index over XML column (logical)
- Index over XML column (physical)
 
Rows
- One row represents represents index
- Scope of rows: all indexes (unique and nonunique) in databases
- Ordered by schema, table name, index id
Sample results

 
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                     
                                                                 
                                                             
                                                             
                                                             
                                                             
                                                                 
                                                             
                                                             
                                                                 
                                                             
                                                             
                                                             
                                                             Marcin Nagly
                                                                        Marcin Nagly
                                 IBM Db2
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                                 SQL Server
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