ABAP Select data from SAP table COPMAINTTLOPPRT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COPMAINTTLOPPRT
*  INTO TABLE @DATA(IT_COPMAINTTLOPPRT2).
*--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_COPMAINTTLOPPRT INDEX 1 INTO DATA(WA_COPMAINTTLOPPRT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COPMAINTTLOPPRT-TASKLISTOPERATIONINTERNALID, sy-vline,
  WA_COPMAINTTLOPPRT-TASKLISTOPPRTINTID, sy-vline,
  WA_COPMAINTTLOPPRT-TASKLISTOPPRTINTVERSCOUNTER, sy-vline,
  WA_COPMAINTTLOPPRT-PRODNRSCETOOLITEMNUMBER, sy-vline,
  WA_COPMAINTTLOPPRT-PRODNRSCETOOLCATEGORY, sy-vline,
  WA_COPMAINTTLOPPRT-PRODNRSCETOOLCATEGORYNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COPMAINTTLOPPRT 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_COPMAINTTLOPPRT 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_COPMAINTTLOPPRT INTO WA_COPMAINTTLOPPRT.


*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_COPMAINTTLOPPRT-TASKLISTGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPPRT-TASKLISTGROUP.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field PRODNRSCETOOLUSAGEQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COPMAINTTLOPPRT-PRODNRSCETOOLUSAGEQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPMAINTTLOPPRT-PRODNRSCETOOLUSAGEQUANTITYUNIT.
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_COPMAINTTLOPPRT_STR, 
MANDT TYPE STRING,
TASKLISTTYPE TYPE STRING,
TASKLISTGROUP TYPE STRING,
TASKLISTGROUPCOUNTER TYPE STRING,
TASKLISTSEQUENCE TYPE STRING,
TASKLISTOPERATIONINTERNALID TYPE STRING,
TASKLISTOPPRTINTID TYPE STRING,
TASKLISTOPPRTINTVERSCOUNTER TYPE STRING,
PRODNRSCETOOLITEMNUMBER TYPE STRING,
PRODNRSCETOOLCATEGORY TYPE STRING,
PRODNRSCETOOLCATEGORYNAME TYPE STRING,
PRODUCTIONRESOURCETOOL TYPE STRING,
PRODUCTIONRESOURCETOOLDESC TYPE STRING,
PRODNRSCETOOLTEXT TYPE STRING,
PRODNRSCETOOLSTANDARDWORKQTY TYPE STRING,
PRODNRSCETOOLSTDWORKQTYUNIT TYPE STRING,
PRODNRSCETOOLTOTQTYCALCFORMULA TYPE STRING,
PRODNRSCETOOLUSAGEQUANTITY TYPE STRING,
PRODNRSCETOOLUSAGEQUANTITYUNIT TYPE STRING,
PRODNRSCETOOLUSAGEQTYCALCFMLA TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COPMAINTTLOPPRT_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_COPMAINTTLOPPRT_STR-MANDT sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTTYPE sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTGROUP sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTGROUPCOUNTER sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTSEQUENCE sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTOPERATIONINTERNALID sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTOPPRTINTID sy-vline 
WA_COPMAINTTLOPPRT_STR-TASKLISTOPPRTINTVERSCOUNTER sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLITEMNUMBER sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLCATEGORY sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLCATEGORYNAME sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODUCTIONRESOURCETOOL sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODUCTIONRESOURCETOOLDESC sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLTEXT sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLSTANDARDWORKQTY sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLSTDWORKQTYUNIT sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLTOTQTYCALCFORMULA sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLUSAGEQUANTITY sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLUSAGEQUANTITYUNIT sy-vline 
WA_COPMAINTTLOPPRT_STR-PRODNRSCETOOLUSAGEQTYCALCFMLA sy-vline 
WA_COPMAINTTLOPPRT_STR-PLANT sy-vline 
WA_COPMAINTTLOPPRT_STR-PLANTNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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