ABAP Select data from SAP table E3MPOPM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3MPOPM 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 E3MPOPM. 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 E3MPOPM 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_E3MPOPM TYPE STANDARD TABLE OF E3MPOPM,
      WA_E3MPOPM TYPE E3MPOPM,
      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: <E3MPOPM> TYPE E3MPOPM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3MPOPM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3MPOPM
  INTO TABLE IT_E3MPOPM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3MPOPM
*  INTO TABLE @DATA(IT_E3MPOPM2).
*--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_E3MPOPM INDEX 1 INTO DATA(WA_E3MPOPM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3MPOPM ASSIGNING <E3MPOPM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3MPOPM>-MSGFN = 1.
<E3MPOPM>-VERSP = 1.
<E3MPOPM>-PROPR = 1.
<E3MPOPM>-MODAW = 1.
<E3MPOPM>-MODAV = 1.

ENDLOOP.

LOOP AT IT_E3MPOPM INTO WA_E3MPOPM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3MPOPM-KZPAR, sy-vline,
  WA_E3MPOPM-OPGRA, sy-vline,
  WA_E3MPOPM-KZINI, sy-vline,
  WA_E3MPOPM-PRMOD, sy-vline,
  WA_E3MPOPM-ALPHA, sy-vline,
  WA_E3MPOPM-BETA1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3MPOPM 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_E3MPOPM 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_E3MPOPM INTO WA_E3MPOPM.


*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_E3MPOPM_STR, 
MSGFN TYPE STRING,
VERSP TYPE STRING,
PROPR TYPE STRING,
MODAW TYPE STRING,
MODAV TYPE STRING,
KZPAR TYPE STRING,
OPGRA TYPE STRING,
KZINI TYPE STRING,
PRMOD TYPE STRING,
ALPHA TYPE STRING,
BETA1 TYPE STRING,
GAMMA TYPE STRING,
DELTA TYPE STRING,
EPSIL TYPE STRING,
SIGGR TYPE STRING,
PERKZ TYPE STRING,
PRDAT TYPE STRING,
PERAN TYPE STRING,
PERIN TYPE STRING,
PERIO TYPE STRING,
PEREX TYPE STRING,
ANZPR TYPE STRING,
FIMON TYPE STRING,
GWERT TYPE STRING,
GWER1 TYPE STRING,
GWER2 TYPE STRING,
VMGWE TYPE STRING,
VMGW1 TYPE STRING,
VMGW2 TYPE STRING,
TWERT TYPE STRING,
VMTWE TYPE STRING,
PRMAD TYPE STRING,
VMMAD TYPE STRING,
FSUMM TYPE STRING,
VMFSU TYPE STRING,
GEWGR TYPE STRING,
THKOF TYPE STRING,
AUSNA TYPE STRING,
PROAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3MPOPM_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_E3MPOPM_STR-MSGFN sy-vline 
WA_E3MPOPM_STR-VERSP sy-vline 
WA_E3MPOPM_STR-PROPR sy-vline 
WA_E3MPOPM_STR-MODAW sy-vline 
WA_E3MPOPM_STR-MODAV sy-vline 
WA_E3MPOPM_STR-KZPAR sy-vline 
WA_E3MPOPM_STR-OPGRA sy-vline 
WA_E3MPOPM_STR-KZINI sy-vline 
WA_E3MPOPM_STR-PRMOD sy-vline 
WA_E3MPOPM_STR-ALPHA sy-vline 
WA_E3MPOPM_STR-BETA1 sy-vline 
WA_E3MPOPM_STR-GAMMA sy-vline 
WA_E3MPOPM_STR-DELTA sy-vline 
WA_E3MPOPM_STR-EPSIL sy-vline 
WA_E3MPOPM_STR-SIGGR sy-vline 
WA_E3MPOPM_STR-PERKZ sy-vline 
WA_E3MPOPM_STR-PRDAT sy-vline 
WA_E3MPOPM_STR-PERAN sy-vline 
WA_E3MPOPM_STR-PERIN sy-vline 
WA_E3MPOPM_STR-PERIO sy-vline 
WA_E3MPOPM_STR-PEREX sy-vline 
WA_E3MPOPM_STR-ANZPR sy-vline 
WA_E3MPOPM_STR-FIMON sy-vline 
WA_E3MPOPM_STR-GWERT sy-vline 
WA_E3MPOPM_STR-GWER1 sy-vline 
WA_E3MPOPM_STR-GWER2 sy-vline 
WA_E3MPOPM_STR-VMGWE sy-vline 
WA_E3MPOPM_STR-VMGW1 sy-vline 
WA_E3MPOPM_STR-VMGW2 sy-vline 
WA_E3MPOPM_STR-TWERT sy-vline 
WA_E3MPOPM_STR-VMTWE sy-vline 
WA_E3MPOPM_STR-PRMAD sy-vline 
WA_E3MPOPM_STR-VMMAD sy-vline 
WA_E3MPOPM_STR-FSUMM sy-vline 
WA_E3MPOPM_STR-VMFSU sy-vline 
WA_E3MPOPM_STR-GEWGR sy-vline 
WA_E3MPOPM_STR-THKOF sy-vline 
WA_E3MPOPM_STR-AUSNA sy-vline 
WA_E3MPOPM_STR-PROAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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