ABAP Select data from SAP table RJKSEMSGCOLLECT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSEMSGCOLLECT
*  INTO TABLE @DATA(IT_RJKSEMSGCOLLECT2).
*--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_RJKSEMSGCOLLECT INDEX 1 INTO DATA(WA_RJKSEMSGCOLLECT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSEMSGCOLLECT>-CONTRACT = 1.
<RJKSEMSGCOLLECT>-ITEM = 1.
<RJKSEMSGCOLLECT>-PHASEMDL = 1.
<RJKSEMSGCOLLECT>-PHASENBR = 1.
<RJKSEMSGCOLLECT>-NIP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSEMSGCOLLECT-ISSUE, sy-vline,
  WA_RJKSEMSGCOLLECT-MSGTY, sy-vline,
  WA_RJKSEMSGCOLLECT-MSGID, sy-vline,
  WA_RJKSEMSGCOLLECT-MSGNO, sy-vline,
  WA_RJKSEMSGCOLLECT-MSGV1, sy-vline,
  WA_RJKSEMSGCOLLECT-MSGV2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSEMSGCOLLECT 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_RJKSEMSGCOLLECT 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_RJKSEMSGCOLLECT INTO WA_RJKSEMSGCOLLECT.


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

*Conversion exit MATN1, internal->external for field ISSUE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJKSEMSGCOLLECT-ISSUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSEMSGCOLLECT-ISSUE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDERVBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSEMSGCOLLECT-ORDERVBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSEMSGCOLLECT-ORDERVBELN.
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_RJKSEMSGCOLLECT_STR, 
CONTRACT TYPE STRING,
ITEM TYPE STRING,
PHASEMDL TYPE STRING,
PHASENBR TYPE STRING,
NIP TYPE STRING,
ISSUE TYPE STRING,
MSGTY TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
LAYER TYPE STRING,
TRACE TYPE STRING,
COUNTER TYPE STRING,
GROUPID TYPE STRING,
ORDERVBELN TYPE STRING,
ORDERITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSEMSGCOLLECT_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_RJKSEMSGCOLLECT_STR-CONTRACT sy-vline 
WA_RJKSEMSGCOLLECT_STR-ITEM sy-vline 
WA_RJKSEMSGCOLLECT_STR-PHASEMDL sy-vline 
WA_RJKSEMSGCOLLECT_STR-PHASENBR sy-vline 
WA_RJKSEMSGCOLLECT_STR-NIP sy-vline 
WA_RJKSEMSGCOLLECT_STR-ISSUE sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGTY sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGID sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGNO sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGV1 sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGV2 sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGV3 sy-vline 
WA_RJKSEMSGCOLLECT_STR-MSGV4 sy-vline 
WA_RJKSEMSGCOLLECT_STR-LAYER sy-vline 
WA_RJKSEMSGCOLLECT_STR-TRACE sy-vline 
WA_RJKSEMSGCOLLECT_STR-COUNTER sy-vline 
WA_RJKSEMSGCOLLECT_STR-GROUPID sy-vline 
WA_RJKSEMSGCOLLECT_STR-ORDERVBELN sy-vline 
WA_RJKSEMSGCOLLECT_STR-ORDERITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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