ABAP Select data from SAP table RJ45B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJ45B 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 RJ45B. 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 RJ45B 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_RJ45B TYPE STANDARD TABLE OF RJ45B,
      WA_RJ45B TYPE RJ45B,
      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: <RJ45B> TYPE RJ45B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJ45B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJ45B
  INTO TABLE IT_RJ45B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJ45B
*  INTO TABLE @DATA(IT_RJ45B2).
*--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_RJ45B INDEX 1 INTO DATA(WA_RJ45B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJ45B ASSIGNING <RJ45B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJ45B>-TEXT001 = 1.
<RJ45B>-TEXT002 = 1.
<RJ45B>-TEXT003 = 1.
<RJ45B>-TEXT004 = 1.
<RJ45B>-LINE1 = 1.

ENDLOOP.

LOOP AT IT_RJ45B INTO WA_RJ45B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJ45B-SEL_AG, sy-vline,
  WA_RJ45B-SEL_AG_BOX, sy-vline,
  WA_RJ45B-SEL_WE, sy-vline,
  WA_RJ45B-SEL_WE_BOX, sy-vline,
  WA_RJ45B-SEL_RE, sy-vline,
  WA_RJ45B-SEL_RE_BOX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJ45B 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_RJ45B 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_RJ45B INTO WA_RJ45B.


*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_RJ45B_STR, 
TEXT001 TYPE STRING,
TEXT002 TYPE STRING,
TEXT003 TYPE STRING,
TEXT004 TYPE STRING,
LINE1 TYPE STRING,
SEL_AG TYPE STRING,
SEL_AG_BOX TYPE STRING,
SEL_WE TYPE STRING,
SEL_WE_BOX TYPE STRING,
SEL_RE TYPE STRING,
SEL_RE_BOX TYPE STRING,
SEL_RG TYPE STRING,
SEL_RG_BOX TYPE STRING,
SEL_VM TYPE STRING,
SEL_VM_BOX TYPE STRING,
SEL_VS TYPE STRING,
SEL_VS_BOX TYPE STRING,
EINTRAG TYPE STRING,
EINTRAEGE TYPE STRING,
EINTRAGR TYPE STRING,
EINTRAEGER TYPE STRING,
XMOD_JKK2 TYPE STRING,
XMOD_VBELN TYPE STRING,
XMOD_POSEX TYPE STRING,
XMOD_BEZPE TYPE STRING,
TEXT005 TYPE STRING,
TEXT006 TYPE STRING,
TEXT007 TYPE STRING,
TEXT009 TYPE STRING,
TEXT011 TYPE STRING,
FV_BEZIRK TYPE STRING,
FV_ZEIT TYPE STRING,
TEXT016 TYPE STRING,
TEXT017 TYPE STRING,
PREIS TYPE STRING,
TEXT014 TYPE STRING,
TEXT015 TYPE STRING,
KPL_SUCHE TYPE STRING,
TEXT023 TYPE STRING,
TEXT024 TYPE STRING,
TEXT025 TYPE STRING,
TEXT026 TYPE STRING,
RECHARTTXT TYPE STRING,
FRAME_GP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJ45B_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_RJ45B_STR-TEXT001 sy-vline 
WA_RJ45B_STR-TEXT002 sy-vline 
WA_RJ45B_STR-TEXT003 sy-vline 
WA_RJ45B_STR-TEXT004 sy-vline 
WA_RJ45B_STR-LINE1 sy-vline 
WA_RJ45B_STR-SEL_AG sy-vline 
WA_RJ45B_STR-SEL_AG_BOX sy-vline 
WA_RJ45B_STR-SEL_WE sy-vline 
WA_RJ45B_STR-SEL_WE_BOX sy-vline 
WA_RJ45B_STR-SEL_RE sy-vline 
WA_RJ45B_STR-SEL_RE_BOX sy-vline 
WA_RJ45B_STR-SEL_RG sy-vline 
WA_RJ45B_STR-SEL_RG_BOX sy-vline 
WA_RJ45B_STR-SEL_VM sy-vline 
WA_RJ45B_STR-SEL_VM_BOX sy-vline 
WA_RJ45B_STR-SEL_VS sy-vline 
WA_RJ45B_STR-SEL_VS_BOX sy-vline 
WA_RJ45B_STR-EINTRAG sy-vline 
WA_RJ45B_STR-EINTRAEGE sy-vline 
WA_RJ45B_STR-EINTRAGR sy-vline 
WA_RJ45B_STR-EINTRAEGER sy-vline 
WA_RJ45B_STR-XMOD_JKK2 sy-vline 
WA_RJ45B_STR-XMOD_VBELN sy-vline 
WA_RJ45B_STR-XMOD_POSEX sy-vline 
WA_RJ45B_STR-XMOD_BEZPE sy-vline 
WA_RJ45B_STR-TEXT005 sy-vline 
WA_RJ45B_STR-TEXT006 sy-vline 
WA_RJ45B_STR-TEXT007 sy-vline 
WA_RJ45B_STR-TEXT009 sy-vline 
WA_RJ45B_STR-TEXT011 sy-vline 
WA_RJ45B_STR-FV_BEZIRK sy-vline 
WA_RJ45B_STR-FV_ZEIT sy-vline 
WA_RJ45B_STR-TEXT016 sy-vline 
WA_RJ45B_STR-TEXT017 sy-vline 
WA_RJ45B_STR-PREIS sy-vline 
WA_RJ45B_STR-TEXT014 sy-vline 
WA_RJ45B_STR-TEXT015 sy-vline 
WA_RJ45B_STR-KPL_SUCHE sy-vline 
WA_RJ45B_STR-TEXT023 sy-vline 
WA_RJ45B_STR-TEXT024 sy-vline 
WA_RJ45B_STR-TEXT025 sy-vline 
WA_RJ45B_STR-TEXT026 sy-vline 
WA_RJ45B_STR-RECHARTTXT sy-vline 
WA_RJ45B_STR-FRAME_GP sy-vline      INTO ld_text SEPARATED BY SPACE.

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