ABAP Select data from SAP table E2OPER1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2OPER1 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 E2OPER1. 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 E2OPER1 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_E2OPER1 TYPE STANDARD TABLE OF E2OPER1,
      WA_E2OPER1 TYPE E2OPER1,
      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: <E2OPER1> TYPE E2OPER1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2OPER1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2OPER1
  INTO TABLE IT_E2OPER1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2OPER1
*  INTO TABLE @DATA(IT_E2OPER12).
*--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_E2OPER1 INDEX 1 INTO DATA(WA_E2OPER12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2OPER1 ASSIGNING <E2OPER1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2OPER1>-RUECK = 1.
<E2OPER1>-AUFNR = 1.
<E2OPER1>-APLFL = 1.
<E2OPER1>-VORNR = 1.
<E2OPER1>-UVORN = 1.

ENDLOOP.

LOOP AT IT_E2OPER1 INTO WA_E2OPER1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2OPER1-SPLIT, sy-vline,
  WA_E2OPER1-KAPAR, sy-vline,
  WA_E2OPER1-BDEGR, sy-vline,
  WA_E2OPER1-MGVRG, sy-vline,
  WA_E2OPER1-ASVRG, sy-vline,
  WA_E2OPER1-MEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2OPER1 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_E2OPER1 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_E2OPER1 INTO WA_E2OPER1.


*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 AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OPER1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OPER1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E2OPER1-APLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OPER1-APLFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_E2OPER1-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OPER1-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_E2OPER1-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2OPER1-UVORN.
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_E2OPER1_STR, 
RUECK TYPE STRING,
AUFNR TYPE STRING,
APLFL TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
SPLIT TYPE STRING,
KAPAR TYPE STRING,
BDEGR TYPE STRING,
MGVRG TYPE STRING,
ASVRG TYPE STRING,
MEINH TYPE STRING,
UMREN TYPE STRING,
UMREZ TYPE STRING,
KMEIN TYPE STRING,
UNTMG TYPE STRING,
UEBMG TYPE STRING,
ACTI1 TYPE STRING,
UNIT1 TYPE STRING,
ACTI2 TYPE STRING,
UNIT2 TYPE STRING,
ACTI3 TYPE STRING,
UNIT3 TYPE STRING,
ACTI4 TYPE STRING,
UNIT4 TYPE STRING,
ACTI5 TYPE STRING,
UNIT5 TYPE STRING,
ACTI6 TYPE STRING,
UNIT6 TYPE STRING,
LMNGA TYPE STRING,
XMNGA TYPE STRING,
ISTAT TYPE STRING,
ISM01 TYPE STRING,
ISM02 TYPE STRING,
ISM03 TYPE STRING,
ISM04 TYPE STRING,
ISM05 TYPE STRING,
ISM06 TYPE STRING,
LEK01 TYPE STRING,
LEK02 TYPE STRING,
LEK03 TYPE STRING,
LEK04 TYPE STRING,
LEK05 TYPE STRING,
LEK06 TYPE STRING,
ARBPL TYPE STRING,
WERKS TYPE STRING,
ARBPI TYPE STRING,
WERKI TYPE STRING,
ISMNW TYPE STRING,
ISMNE TYPE STRING,
ARBEI TYPE STRING,
ARBEH TYPE STRING,
OFMNW TYPE STRING,
OFMNE TYPE STRING,
LEKNW TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
SSEDD TYPE STRING,
SSEDZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2OPER1_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_E2OPER1_STR-RUECK sy-vline 
WA_E2OPER1_STR-AUFNR sy-vline 
WA_E2OPER1_STR-APLFL sy-vline 
WA_E2OPER1_STR-VORNR sy-vline 
WA_E2OPER1_STR-UVORN sy-vline 
WA_E2OPER1_STR-SPLIT sy-vline 
WA_E2OPER1_STR-KAPAR sy-vline 
WA_E2OPER1_STR-BDEGR sy-vline 
WA_E2OPER1_STR-MGVRG sy-vline 
WA_E2OPER1_STR-ASVRG sy-vline 
WA_E2OPER1_STR-MEINH sy-vline 
WA_E2OPER1_STR-UMREN sy-vline 
WA_E2OPER1_STR-UMREZ sy-vline 
WA_E2OPER1_STR-KMEIN sy-vline 
WA_E2OPER1_STR-UNTMG sy-vline 
WA_E2OPER1_STR-UEBMG sy-vline 
WA_E2OPER1_STR-ACTI1 sy-vline 
WA_E2OPER1_STR-UNIT1 sy-vline 
WA_E2OPER1_STR-ACTI2 sy-vline 
WA_E2OPER1_STR-UNIT2 sy-vline 
WA_E2OPER1_STR-ACTI3 sy-vline 
WA_E2OPER1_STR-UNIT3 sy-vline 
WA_E2OPER1_STR-ACTI4 sy-vline 
WA_E2OPER1_STR-UNIT4 sy-vline 
WA_E2OPER1_STR-ACTI5 sy-vline 
WA_E2OPER1_STR-UNIT5 sy-vline 
WA_E2OPER1_STR-ACTI6 sy-vline 
WA_E2OPER1_STR-UNIT6 sy-vline 
WA_E2OPER1_STR-LMNGA sy-vline 
WA_E2OPER1_STR-XMNGA sy-vline 
WA_E2OPER1_STR-ISTAT sy-vline 
WA_E2OPER1_STR-ISM01 sy-vline 
WA_E2OPER1_STR-ISM02 sy-vline 
WA_E2OPER1_STR-ISM03 sy-vline 
WA_E2OPER1_STR-ISM04 sy-vline 
WA_E2OPER1_STR-ISM05 sy-vline 
WA_E2OPER1_STR-ISM06 sy-vline 
WA_E2OPER1_STR-LEK01 sy-vline 
WA_E2OPER1_STR-LEK02 sy-vline 
WA_E2OPER1_STR-LEK03 sy-vline 
WA_E2OPER1_STR-LEK04 sy-vline 
WA_E2OPER1_STR-LEK05 sy-vline 
WA_E2OPER1_STR-LEK06 sy-vline 
WA_E2OPER1_STR-ARBPL sy-vline 
WA_E2OPER1_STR-WERKS sy-vline 
WA_E2OPER1_STR-ARBPI sy-vline 
WA_E2OPER1_STR-WERKI sy-vline 
WA_E2OPER1_STR-ISMNW sy-vline 
WA_E2OPER1_STR-ISMNE sy-vline 
WA_E2OPER1_STR-ARBEI sy-vline 
WA_E2OPER1_STR-ARBEH sy-vline 
WA_E2OPER1_STR-OFMNW sy-vline 
WA_E2OPER1_STR-OFMNE sy-vline 
WA_E2OPER1_STR-LEKNW sy-vline 
WA_E2OPER1_STR-FSAVD sy-vline 
WA_E2OPER1_STR-FSAVZ sy-vline 
WA_E2OPER1_STR-SSEDD sy-vline 
WA_E2OPER1_STR-SSEDZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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