ABAP Select data from SAP table COPMAINTTLOPMATL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COPMAINTTLOPMATL 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 COPMAINTTLOPMATL. 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 COPMAINTTLOPMATL 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_COPMAINTTLOPMATL TYPE STANDARD TABLE OF COPMAINTTLOPMATL,
      WA_COPMAINTTLOPMATL TYPE COPMAINTTLOPMATL,
      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: <COPMAINTTLOPMATL> TYPE COPMAINTTLOPMATL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COPMAINTTLOPMATL
*  INTO TABLE @DATA(IT_COPMAINTTLOPMATL2).
*--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_COPMAINTTLOPMATL INDEX 1 INTO DATA(WA_COPMAINTTLOPMATL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COPMAINTTLOPMATL>-MANDT = 1.
<COPMAINTTLOPMATL>-TASKLISTTYPE = 1.
<COPMAINTTLOPMATL>-TASKLISTGROUP = 1.
<COPMAINTTLOPMATL>-TASKLISTGROUPCOUNTER = 1.
<COPMAINTTLOPMATL>-TASKLISTSEQUENCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COPMAINTTLOPMATL-TASKLISTOPERATIONINTERNALID, sy-vline,
  WA_COPMAINTTLOPMATL-TASKLISTOPBOMITMINTERNALID, sy-vline,
  WA_COPMAINTTLOPMATL-TASKLISTOPBOMITMINTVERSCOUNTER, sy-vline,
  WA_COPMAINTTLOPMATL-MATERIAL, sy-vline,
  WA_COPMAINTTLOPMATL-MATERIALNAME, sy-vline,
  WA_COPMAINTTLOPMATL-BILLOFMATERIALITEMQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COPMAINTTLOPMATL 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_COPMAINTTLOPMATL 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_COPMAINTTLOPMATL INTO WA_COPMAINTTLOPMATL.


*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.

*Conversion exit ALPHA, internal->external for field TASKLISTGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPMATL-TASKLISTGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPMATL-TASKLISTGROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TASKLISTGROUPCOUNTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPMATL-TASKLISTGROUPCOUNTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPMATL-TASKLISTGROUPCOUNTER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TASKLISTSEQUENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPMATL-TASKLISTSEQUENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPMATL-TASKLISTSEQUENCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPMATL-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPMATL-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BILLOFMATERIALITEMUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPMATL-BILLOFMATERIALITEMUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPMATL-BILLOFMATERIALITEMUNIT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_COPMAINTTLOPMATL_STR, 
MANDT TYPE STRING,
TASKLISTTYPE TYPE STRING,
TASKLISTGROUP TYPE STRING,
TASKLISTGROUPCOUNTER TYPE STRING,
TASKLISTSEQUENCE TYPE STRING,
TASKLISTOPERATIONINTERNALID TYPE STRING,
TASKLISTOPBOMITMINTERNALID TYPE STRING,
TASKLISTOPBOMITMINTVERSCOUNTER TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
BILLOFMATERIALITEMQUANTITY TYPE STRING,
BILLOFMATERIALITEMUNIT TYPE STRING,
BILLOFMATERIALITEMCATEGORY TYPE STRING,
BILLOFMATERIALITEMCATEGORYDESC TYPE STRING,
RESVNISMRPRLVTORPURREQNISCRTED TYPE STRING,
MATLSPLNGRELEVANCYCODENAME TYPE STRING,
MATLCOMPISMARKEDFORBACKFLUSH TYPE STRING,
SAFETYRELEVANCEACTIONCODE TYPE STRING,
SAFETYRELEVANCEACTIONDESC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COPMAINTTLOPMATL_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_COPMAINTTLOPMATL_STR-MANDT sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTTYPE sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTGROUP sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTGROUPCOUNTER sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTSEQUENCE sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTOPERATIONINTERNALID sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTOPBOMITMINTERNALID sy-vline 
WA_COPMAINTTLOPMATL_STR-TASKLISTOPBOMITMINTVERSCOUNTER sy-vline 
WA_COPMAINTTLOPMATL_STR-MATERIAL sy-vline 
WA_COPMAINTTLOPMATL_STR-MATERIALNAME sy-vline 
WA_COPMAINTTLOPMATL_STR-BILLOFMATERIALITEMQUANTITY sy-vline 
WA_COPMAINTTLOPMATL_STR-BILLOFMATERIALITEMUNIT sy-vline 
WA_COPMAINTTLOPMATL_STR-BILLOFMATERIALITEMCATEGORY sy-vline 
WA_COPMAINTTLOPMATL_STR-BILLOFMATERIALITEMCATEGORYDESC sy-vline 
WA_COPMAINTTLOPMATL_STR-RESVNISMRPRLVTORPURREQNISCRTED sy-vline 
WA_COPMAINTTLOPMATL_STR-MATLSPLNGRELEVANCYCODENAME sy-vline 
WA_COPMAINTTLOPMATL_STR-MATLCOMPISMARKEDFORBACKFLUSH sy-vline 
WA_COPMAINTTLOPMATL_STR-SAFETYRELEVANCEACTIONCODE sy-vline 
WA_COPMAINTTLOPMATL_STR-SAFETYRELEVANCEACTIONDESC sy-vline      INTO ld_text SEPARATED BY SPACE.

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