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This blog contains details of  getting started in using AMDP classes

It contains  below Topic areas;

  1. Introduction

  2. Getting started

    • Creating class implementation and method

  3. Syntax for common operations

    • Select based on importing parameter coming in the class

    • Select based on an internal table

    • Select Unique records

    • To filter unique values from an internal table

    • Combine select from 2 internal tables

    • To add select criteria based on a range

    • Using case and end case

    • Syntax for using SUM

  4. Endnotes



As mentioned in the help link

An AMDP class is a global class in the class library that contains one or more of the following tag interfaces:

  • IF_AMDP_MARKER_HDB for the SAP HANA database

The names of the interfaces all start with IF_AMDP_MARKER and a suffix indicates the database system for which the ABAP Managed Database Procedures can be implemented in AMDP methods of the class.

An AMDP class can contain both regular methods and AMDP methods. It can contain one or more AMDP methods for each database system specified by a tag interface.


In simple words to select from HANA DB tables instead of using ABAP you can use  AMDP which has a slightly different syntax and is way more faster.




Getting started

Creating a class implementation and method.

Create a class and method using HANA studio which automatically populates definition and implementation


Modified the class method to add interface  IF_AMDP_MARKER_hdb

Added a Type and table to be returned from the class method get_result and raise exception CX_AMDP_ERROR.


CLASS zcl_test_extractor_amdp DEFINITION





INTERFACES if_amdp_marker_hdb .

BEGIN OF ty_attributes,

object_id TYPE crmt_object_id_db

,guid TYPE crmt_object_guid

,process_type TYPE crmt_process_type_db

,P_DESCRIPTION TYPE crmt_description

,process_desc type crmt_description

END OF ty_attributes.


tt_attributes TYPE STANDARD TABLE OF ty_attributes,

CLASS-METHODS get_result


VALUE(iv_clnt) TYPE mandt

VALUE(ip_filters) TYPE string


VALUE(et_attribute_details) TYPE tt_attributes





Now start with the implementation statement as below

CLASS zcl_test_extractor_amdp IMPLEMENTATION.

and below starts the actual code

Method get_XXX_details by database procedure for hdb language sqlscript
using ekko bseg bkpf.

  METHOD get_result
USING crmd_orderadm_h crmc_proc_type crmc_proc_type_t

lt_result =


oh.object_id AS object_id

,oh.process_type AS process_type


,oh.created_at AS created_at

,oh.created_by AS created_by

FROM crmd_orderadm_h

AS oh

JOIN crmc_proc_type

AS pt ON pt.process_type = oh.process_type and pt.client = IV_CLNT

JOIN crmc_proc_type_t

AS pd ON pd.process_type = pt.process_type AND pd.langu = 'E'

WHERE oh.object_type = 'BUS2000126' AND oh.process_type = 'ZBKG' and

oh.client = IV_CLNT

ORDER BY oh.object_id;

et_attribute_details = APPLY_FILTER( :lt_result, :ip_filters );



Syntax for common operations

Select based on importing parameter coming in the class

Here IV_FROMDATE and IV_TODATE are coming as incoming paramaters in the class.

* Fetched the Changed PO details from ECC
lt_ebeln = SELECT ebeln
FROM   ekko
WHERE  aedat BETWEEN iv_fromdate
AND      iv_todate;

Select based on an internal table

Select data based on internal table lt_ebeln.

Note; the internal table is named using a colon:
 lt_ebeln =   SELECT i.ebeln
FROM bkpf as h
INNER JOIN bseg as i
on i.bukrs = h.bukrs AND
i.belnr = h.belnr AND
i.gjahr = h.gjahr
UNION ALL SELECT ebeln from:lt_ebeln;

Select Unique records

Select unique records using keyword DISTINCT

lt_re_hyp = SELECT DISTINCT * FROM :lt_re_hyp;


To filter unique values from an internal table

To filter specific value based on value in internal table or variable use Apply_filter.

lt_na = apply_filter( :lt_base, :iv_proj_type_na );


Combine select from 2 internal tables

Get the final result by combining data from multiple internal table

Example lt_cc and lt_wbs using UNION by first selecting from lt_cc and lt_wbs to get the final result in lt_details.
    lt_details =
*Cost Center Items
base_cc.gl_account as gl_account,
base_cc.ryear as ryear,
cc_hyp.zz_hpp_project as hp_proj_id,
from :lt_cc as base_cc
left outer join :lt_cc_hyp as cc_hyp
on base_cc.kostl = cc_hyp.kostl
*WBS Items
union all
select distinct
base_wbs.gl_account as gl_account,
base_wbs.ryear as ryear,
wbs_hyp.zz_hpp_project as hp_proj_id,

from :lt_wbs as base_wbs
left outer join :lt_wbs_hyp as wbs_hyp
on base_wbs.projk = wbs_hyp.pspnr ;

To add select criteria based on a range 

When selecting data use keyword IN and specify the range
 LEFT OUTER JOIN tj02t    AS ct ON ct.istat = cs.stat

AND ct.spras = 'E' AND ct.txt04 IN ('CANC','DEF')


Using case and end case

CASE and end case to add a specific value
 et_details =
base.gl_account as gl_account,
'' as activity, case
when base.period = '001' then 'Jul'
when base.period = '002' then 'Aug'
when base.period = '003' then 'Sep'
when base.period = '004' then 'Oct'
when base.period = '005' then 'Nov'
when base.period = '006' then 'Dec'
when base.period = '007' then 'Jan'
when base.period = '008' then 'Feb'
when base.period = '009' then 'Mar'
when base.period = '010' then 'Apr'
when base.period = '011' then 'May'
when base.period = '012' then 'Jun'
else 'NA'
end as period,
'' as scenario,
base.year as year,
SUM ( base.hsl ) as hsl
from :lt_details as base
group by gl_account, zzlocbrd, hp_proj_id, prctr, year, period;


Syntax for using SUM 

To sum up the value using the keyword SUM though I am not still sure if it works as expected

I prefer to get all values and then sum outside of AMDP

oh.object_id as object_id ,
sum( pi.net_value ) as total_value

FROM crmd_orderadm_h AS oh

inner JOIN crmd_orderadm_i AS oi ON oi.header = oh.guid
JOIN crmd_pricing_i AS pi ON pi.guid = oi.guid
LEFT OUTER JOIN tj02t AS ct ON ct.istat = cs.stat AND ct.spras = 'E' AND ct.txt04 IN ('CANC','DEF')
inner JOIN :et_attribute_details as base
on oh.object_id = base.object_id
AND ct.txt30 IS NULL
GROUP BY oh.object_id , pi.net_value ;



  • Important to add IV_MANDT to ensure that specific client data is only selected

  • AMDP classes are best called when you want to send data to the BI team and include it as a part of an extractor as they are very fast compared to traditional way of calling a ABAP based select statement

  • When you select value it should have same select sequence example if your return table has a sequence as  object_id, GUID, Process_type then select statement should also select in the same sequence else it gives an error "SQLSCRIPT Return type mismatch"


  • There is no need to explicitly declare the tables you can mention lt_table = SELECT *  .... and it would define the structure to be same as what you select

  • AMDP class and methods can only be edited in HANA studio and can only be debugged from there

  • Not easy to debug them (or maybe I don't know how to )

  • If you require calculations to be done its best to get the data in AMDP and do the remaining calculations outside.

  • I found a comparable difference between the speed of result returned from an ABAP report vs AMDP select query AMDP query took 2 min to fetch 10000 records and  ABAP query (with same select parameters) took 14 mins

  • AMDP class does not allow a lot of calculation to be done and would rather be used just as a select query post calculations, summing calculations etc to be done manually

  • Using AMDP in an extractor. Transaction RSA2 for creating an extractor and add Z_ Function module as shown


Inside this FM I am calling the AMDP class



Hope you find this blog useful for getting started in using AMDP.

Pl share your comments and feedback

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