ABAP Select data from SAP table RPCEKSA0_DETAIL_DAQ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCEKSA0_DETAIL_DAQ table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RPCEKSA0_DETAIL_DAQ. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RPCEKSA0_DETAIL_DAQ table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RPCEKSA0_DETAIL_DAQ TYPE STANDARD TABLE OF RPCEKSA0_DETAIL_DAQ,
      WA_RPCEKSA0_DETAIL_DAQ TYPE RPCEKSA0_DETAIL_DAQ,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RPCEKSA0_DETAIL_DAQ> TYPE RPCEKSA0_DETAIL_DAQ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPCEKSA0_DETAIL_DAQ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPCEKSA0_DETAIL_DAQ
  INTO TABLE IT_RPCEKSA0_DETAIL_DAQ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCEKSA0_DETAIL_DAQ
*  INTO TABLE @DATA(IT_RPCEKSA0_DETAIL_DAQ2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RPCEKSA0_DETAIL_DAQ INDEX 1 INTO DATA(WA_RPCEKSA0_DETAIL_DAQ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPCEKSA0_DETAIL_DAQ ASSIGNING <RPCEKSA0_DETAIL_DAQ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCEKSA0_DETAIL_DAQ>-SECTN = 1.
<RPCEKSA0_DETAIL_DAQ>-PERNR = 1.
<RPCEKSA0_DETAIL_DAQ>-NACHN = 1.
<RPCEKSA0_DETAIL_DAQ>-VORNA = 1.
<RPCEKSA0_DETAIL_DAQ>-ETGTA = 1.

ENDLOOP.

LOOP AT IT_RPCEKSA0_DETAIL_DAQ INTO WA_RPCEKSA0_DETAIL_DAQ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCEKSA0_DETAIL_DAQ-VWGRP, sy-vline,
  WA_RPCEKSA0_DETAIL_DAQ-VWGRT, sy-vline,
  WA_RPCEKSA0_DETAIL_DAQ-VWGRJ, sy-vline,
  WA_RPCEKSA0_DETAIL_DAQ-FKTGR, sy-vline,
  WA_RPCEKSA0_DETAIL_DAQ-GESCH, sy-vline,
  WA_RPCEKSA0_DETAIL_DAQ-ANZDJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCEKSA0_DETAIL_DAQ you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RPCEKSA0_DETAIL_DAQ TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RPCEKSA0_DETAIL_DAQ INTO WA_RPCEKSA0_DETAIL_DAQ.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RPCEKSA0_DETAIL_DAQ_STR, 
SECTN TYPE STRING,
PERNR TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
ETGTA TYPE STRING,
VWGRP TYPE STRING,
VWGRT TYPE STRING,
VWGRJ TYPE STRING,
FKTGR TYPE STRING,
GESCH TYPE STRING,
ANZDJ TYPE STRING,
ANZDA TYPE STRING,
ETBTR TYPE STRING,
BSGRD TYPE STRING,
ARBAN TYPE STRING,
STATU TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FTEQU TYPE STRING,
TRFST TYPE STRING,
TRFGR TYPE STRING,
STELL TYPE STRING,
EXPOL TYPE STRING,
RELEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCEKSA0_DETAIL_DAQ_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RPCEKSA0_DETAIL_DAQ_STR-SECTN sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-PERNR sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-NACHN sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-VORNA sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ETGTA sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-VWGRP sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-VWGRT sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-VWGRJ sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-FKTGR sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-GESCH sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ANZDJ sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ANZDA sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ETBTR sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-BSGRD sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ARBAN sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-STATU sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-BEGDA sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-ENDDA sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-FTEQU sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-TRFST sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-TRFGR sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-STELL sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-EXPOL sy-vline 
WA_RPCEKSA0_DETAIL_DAQ_STR-RELEV sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.