ABAP Select data from SAP table RJMR21 into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJMR21 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 RJMR21. 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 RJMR21 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_RJMR21 TYPE STANDARD TABLE OF RJMR21,
      WA_RJMR21 TYPE RJMR21,
      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: <RJMR21> TYPE RJMR21.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJMR21.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJMR21
  INTO TABLE IT_RJMR21.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJMR21
*  INTO TABLE @DATA(IT_RJMR212).
*--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_RJMR21 INDEX 1 INTO DATA(WA_RJMR212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJMR21 ASSIGNING <RJMR21>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJMR21>-TEXT001 = 1.
<RJMR21>-XSTRUAKTIV = 1.
<RJMR21>-XSTRUINAKT = 1.
<RJMR21>-GUELTIGAB = 1.
<RJMR21>-GUELTIGBIS = 1.
ENDLOOP.

LOOP AT IT_RJMR21 INTO WA_RJMR21.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJMR21-BEZIRK, sy-vline,
WA_RJMR21-ABLSTELLE, sy-vline,
WA_RJMR21-XWUNSCHANZ, sy-vline,
ENDLOOP. *Add any further fields from structure WA_RJMR21 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_RJMR21 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_RJMR21 INTO WA_RJMR21. *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 BEZIRK CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RJMR21-BEZIRK IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RJMR21-BEZIRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ABLSTELLE CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_RJMR21-ABLSTELLE IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_RJMR21-ABLSTELLE.
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_RJMR21_STR,
TEXT001 TYPE STRING,
XSTRUAKTIV TYPE STRING,
XSTRUINAKT TYPE STRING,
GUELTIGAB TYPE STRING,
GUELTIGBIS TYPE STRING,
BEZIRK TYPE STRING,
ABLSTELLE TYPE STRING,
XWUNSCHANZ TYPE STRING,END OF T_EKKO_STR. DATA: WA_RJMR21_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_RJMR21_STR-TEXT001 sy-vline
WA_RJMR21_STR-XSTRUAKTIV sy-vline
WA_RJMR21_STR-XSTRUINAKT sy-vline
WA_RJMR21_STR-GUELTIGAB sy-vline
WA_RJMR21_STR-GUELTIGBIS sy-vline
WA_RJMR21_STR-BEZIRK sy-vline
WA_RJMR21_STR-ABLSTELLE sy-vline
WA_RJMR21_STR-XWUNSCHANZ sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.