ABAP Select data from SAP table MPES_OAN_INCLUDE_EXPORTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_OAN_INCLUDE_EXPORTS
*  INTO TABLE @DATA(IT_MPES_OAN_INCLUDE_EXPORTS2).
*--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_MPES_OAN_INCLUDE_EXPORTS INDEX 1 INTO DATA(WA_MPES_OAN_INCLUDE_EXPORTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_OAN_INCLUDE_EXPORTS>-OAN_HEADER = 1.
<MPES_OAN_INCLUDE_EXPORTS>-OAN_TEXT = 1.
<MPES_OAN_INCLUDE_EXPORTS>-OAN_ELEMENT = 1.
<MPES_OAN_INCLUDE_EXPORTS>-OAN_ELEM_REL = 1.
<MPES_OAN_INCLUDE_EXPORTS>-OA_HEADER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_OAN_INCLUDE_EXPORTS-OA_TEXT, sy-vline,
  WA_MPES_OAN_INCLUDE_EXPORTS-OA_COMP, sy-vline,
  WA_MPES_OAN_INCLUDE_EXPORTS-OA_COMP_INST, sy-vline,
  WA_MPES_OAN_INCLUDE_EXPORTS-OA_LOG_COMP, sy-vline,
  WA_MPES_OAN_INCLUDE_EXPORTS-OA_LOG_COMP_ASGM, sy-vline,
  WA_MPES_OAN_INCLUDE_EXPORTS-OA_REF_COMP_ASSIGNMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_OAN_INCLUDE_EXPORTS 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_MPES_OAN_INCLUDE_EXPORTS 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_MPES_OAN_INCLUDE_EXPORTS INTO WA_MPES_OAN_INCLUDE_EXPORTS.


*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_MPES_OAN_INCLUDE_EXPORTS_STR, 
OAN_HEADER TYPE STRING,
OAN_TEXT TYPE STRING,
OAN_ELEMENT TYPE STRING,
OAN_ELEM_REL TYPE STRING,
OA_HEADER TYPE STRING,
OA_TEXT TYPE STRING,
OA_COMP TYPE STRING,
OA_COMP_INST TYPE STRING,
OA_LOG_COMP TYPE STRING,
OA_LOG_COMP_ASGM TYPE STRING,
OA_REF_COMP_ASSIGNMENT TYPE STRING,
OA_PIC TYPE STRING,
OA_PIC_GRP TYPE STRING,
OA_PRT TYPE STRING,
OA_QUAL TYPE STRING,
OA_WI TYPE STRING,
OA_LCOMP TYPE STRING,
OA_LCOMP_ASGM TYPE STRING,
OA_BUYOFF TYPE STRING,
OA_BUYOFF_TEXT TYPE STRING,
OA_ATH TYPE STRING,
OA_ATH_PARAM TYPE STRING,
OA_CAMERA TYPE STRING,
OA_STA_REF_ASMT TYPE STRING,
EVT_HEADER TYPE STRING,
EVT_TEXT TYPE STRING,
GRP_HEADER TYPE STRING,
GRP_TEXT TYPE STRING,
GRP_ELEMENT TYPE STRING,
WI_HEADER TYPE STRING,
WI_VERSION TYPE STRING,
WI_CONTENT TYPE STRING,
WI_ST_REF TYPE STRING,
WI_VARBL TYPE STRING,
WI_PH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_OAN_INCLUDE_EXPORTS_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_MPES_OAN_INCLUDE_EXPORTS_STR-OAN_HEADER sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OAN_TEXT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OAN_ELEMENT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OAN_ELEM_REL sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_HEADER sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_TEXT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_COMP sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_COMP_INST sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_LOG_COMP sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_LOG_COMP_ASGM sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_REF_COMP_ASSIGNMENT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_PIC sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_PIC_GRP sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_PRT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_QUAL sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_WI sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_LCOMP sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_LCOMP_ASGM sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_BUYOFF sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_BUYOFF_TEXT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_ATH sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_ATH_PARAM sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_CAMERA sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-OA_STA_REF_ASMT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-EVT_HEADER sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-EVT_TEXT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-GRP_HEADER sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-GRP_TEXT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-GRP_ELEMENT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_HEADER sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_VERSION sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_CONTENT sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_ST_REF sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_VARBL sy-vline 
WA_MPES_OAN_INCLUDE_EXPORTS_STR-WI_PH sy-vline      INTO ld_text SEPARATED BY SPACE.

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