ABAP Select data from SAP table OPP_MESSAGE1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OPP_MESSAGE1 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 OPP_MESSAGE1. 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 OPP_MESSAGE1 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_OPP_MESSAGE1 TYPE STANDARD TABLE OF OPP_MESSAGE1,
      WA_OPP_MESSAGE1 TYPE OPP_MESSAGE1,
      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: <OPP_MESSAGE1> TYPE OPP_MESSAGE1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OPP_MESSAGE1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OPP_MESSAGE1
  INTO TABLE IT_OPP_MESSAGE1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OPP_MESSAGE1
*  INTO TABLE @DATA(IT_OPP_MESSAGE12).
*--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_OPP_MESSAGE1 INDEX 1 INTO DATA(WA_OPP_MESSAGE12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OPP_MESSAGE1 ASSIGNING <OPP_MESSAGE1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OPP_MESSAGE1>-CONTROLLER = 1.
<OPP_MESSAGE1>-PART1 = 1.
<OPP_MESSAGE1>-CONTROLLER = 1.
<OPP_MESSAGE1>-MESSAGE_ID = 1.
<OPP_MESSAGE1>-CONTROLLER = 1.

ENDLOOP.

LOOP AT IT_OPP_MESSAGE1 INTO WA_OPP_MESSAGE1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OPP_MESSAGE1-CONTENT, sy-vline,
  WA_OPP_MESSAGE1-DATE_TIME, sy-vline,
  WA_OPP_MESSAGE1-RESPONSE, sy-vline,
  WA_OPP_MESSAGE1-CONTROLLER, sy-vline,
  WA_OPP_MESSAGE1-BASE, sy-vline,
  WA_OPP_MESSAGE1-CONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OPP_MESSAGE1 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_OPP_MESSAGE1 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_OPP_MESSAGE1 INTO WA_OPP_MESSAGE1.


*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_OPP_MESSAGE1_STR, 
CONTROLLER TYPE STRING,
PART1 TYPE STRING,
CONTROLLER TYPE STRING,
MESSAGE_ID TYPE STRING,
CONTROLLER TYPE STRING,
CONTENT TYPE STRING,
DATE_TIME TYPE STRING,
RESPONSE TYPE STRING,
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
REQUEST_ID TYPE STRING,
RESPONSE_TIMESTAMP TYPE STRING,
BUSINESS_ERROR TYPE STRING,
RESPONSE_CODE TYPE STRING,
ANY TYPE STRING,
REQUESTOR TYPE STRING,
BUSINESS_UNIT TYPE STRING,
WORKSTATION_ID TYPE STRING,
CONTROLLER TYPE STRING,
CONTENT TYPE STRING,
REQUESTED_LANGUAGE TYPE STRING,
REQUESTED_MULTI_LANGUAGE TYPE STRING,
ANY TYPE STRING,
MASTER_DATA_SOURCE_SYSTEM_ID TYPE STRING,
ACTION_CODE TYPE STRING,
MESSAGE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OPP_MESSAGE1_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_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-PART1 sy-vline 
WA_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-MESSAGE_ID sy-vline 
WA_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-CONTENT sy-vline 
WA_OPP_MESSAGE1_STR-DATE_TIME sy-vline 
WA_OPP_MESSAGE1_STR-RESPONSE sy-vline 
WA_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-BASE sy-vline 
WA_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-REQUEST_ID sy-vline 
WA_OPP_MESSAGE1_STR-RESPONSE_TIMESTAMP sy-vline 
WA_OPP_MESSAGE1_STR-BUSINESS_ERROR sy-vline 
WA_OPP_MESSAGE1_STR-RESPONSE_CODE sy-vline 
WA_OPP_MESSAGE1_STR-ANY sy-vline 
WA_OPP_MESSAGE1_STR-REQUESTOR sy-vline 
WA_OPP_MESSAGE1_STR-BUSINESS_UNIT sy-vline 
WA_OPP_MESSAGE1_STR-WORKSTATION_ID sy-vline 
WA_OPP_MESSAGE1_STR-CONTROLLER sy-vline 
WA_OPP_MESSAGE1_STR-CONTENT sy-vline 
WA_OPP_MESSAGE1_STR-REQUESTED_LANGUAGE sy-vline 
WA_OPP_MESSAGE1_STR-REQUESTED_MULTI_LANGUAGE sy-vline 
WA_OPP_MESSAGE1_STR-ANY sy-vline 
WA_OPP_MESSAGE1_STR-MASTER_DATA_SOURCE_SYSTEM_ID sy-vline 
WA_OPP_MESSAGE1_STR-ACTION_CODE sy-vline 
WA_OPP_MESSAGE1_STR-MESSAGE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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