ABAP Select data from SAP table RJMJB12 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJMJB12 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 RJMJB12. 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 RJMJB12 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_RJMJB12 TYPE STANDARD TABLE OF RJMJB12,
      WA_RJMJB12 TYPE RJMJB12,
      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: <RJMJB12> TYPE RJMJB12.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJMJB12.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJMJB12
  INTO TABLE IT_RJMJB12.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJMJB12
*  INTO TABLE @DATA(IT_RJMJB122).
*--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_RJMJB12 INDEX 1 INTO DATA(WA_RJMJB122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJMJB12 ASSIGNING <RJMJB12>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJMJB12>-BELEINH = 1.
<RJMJB12>-BE_KURZ = 1.
<RJMJB12>-BE_LANG = 1.
<RJMJB12>-PLAN_PE = 1.
<RJMJB12>-PPE_KURZ = 1.

ENDLOOP.

LOOP AT IT_RJMJB12 INTO WA_RJMJB12.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJMJB12-PPE_LANG, sy-vline,
  WA_RJMJB12-VAVARTYP, sy-vline,
  WA_RJMJB12-INHALTSKOM, sy-vline,
  WA_RJMJB12-INHK_LEV1, sy-vline,
  WA_RJMJB12-SV_KURZ, sy-vline,
  WA_RJMJB12-IKO_LANG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJMJB12 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_RJMJB12 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_RJMJB12 INTO WA_RJMJB12.


*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 BELEINH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-BELEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-BELEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLAN_PE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-PLAN_PE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-PLAN_PE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INHALTSKOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-INHALTSKOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-INHALTSKOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INHK_LEV1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-INHK_LEV1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-INHK_LEV1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SPALTENANZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-SPALTENANZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-SPALTENANZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ANNSCHL_EH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-ANNSCHL_EH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-ANNSCHL_EH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRED
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJMJB12-PRED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJMJB12-PRED.
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_RJMJB12_STR, 
BELEINH TYPE STRING,
BE_KURZ TYPE STRING,
BE_LANG TYPE STRING,
PLAN_PE TYPE STRING,
PPE_KURZ TYPE STRING,
PPE_LANG TYPE STRING,
VAVARTYP TYPE STRING,
INHALTSKOM TYPE STRING,
INHK_LEV1 TYPE STRING,
SV_KURZ TYPE STRING,
IKO_LANG TYPE STRING,
IKO_KURZ TYPE STRING,
IKO_ID TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
XIKO_VERK TYPE STRING,
XALL_SUBS TYPE STRING,
SEITE_FSP TYPE STRING,
SFSP_KURZ TYPE STRING,
SPALTENANZ TYPE STRING,
ANNSCHLUSS TYPE STRING,
ANNSCHL_EH TYPE STRING,
UHRZEIT_AS TYPE STRING,
XIKO_EXP TYPE STRING,
STRUSTUFE TYPE STRING,
STUFE_DIFF TYPE STRING,
BAUM_NR TYPE STRING,
PRED TYPE STRING,
XSUCCS TYPE STRING,
IKOHY_ID TYPE STRING,
X_MONTAG TYPE STRING,
X_DIENSTAG TYPE STRING,
X_MITTWOCH TYPE STRING,
X_DONNERST TYPE STRING,
X_FREITAG TYPE STRING,
X_SAMSTAG TYPE STRING,
X_SONNTAG TYPE STRING,
X_ALLETAGE TYPE STRING,
VT_OPTION TYPE STRING,
VT_SIGN TYPE STRING,
AKT_EINTR TYPE STRING,
GES_EINTR TYPE STRING,
FILTER_VON TYPE STRING,
FILTER_BIS TYPE STRING,
WEBPUBL_DAYS_STR TYPE STRING,
WEBPUBL_DAYS_END TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJMJB12_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_RJMJB12_STR-BELEINH sy-vline 
WA_RJMJB12_STR-BE_KURZ sy-vline 
WA_RJMJB12_STR-BE_LANG sy-vline 
WA_RJMJB12_STR-PLAN_PE sy-vline 
WA_RJMJB12_STR-PPE_KURZ sy-vline 
WA_RJMJB12_STR-PPE_LANG sy-vline 
WA_RJMJB12_STR-VAVARTYP sy-vline 
WA_RJMJB12_STR-INHALTSKOM sy-vline 
WA_RJMJB12_STR-INHK_LEV1 sy-vline 
WA_RJMJB12_STR-SV_KURZ sy-vline 
WA_RJMJB12_STR-IKO_LANG sy-vline 
WA_RJMJB12_STR-IKO_KURZ sy-vline 
WA_RJMJB12_STR-IKO_ID sy-vline 
WA_RJMJB12_STR-GUELTIGVON sy-vline 
WA_RJMJB12_STR-GUELTIGBIS sy-vline 
WA_RJMJB12_STR-XIKO_VERK sy-vline 
WA_RJMJB12_STR-XALL_SUBS sy-vline 
WA_RJMJB12_STR-SEITE_FSP sy-vline 
WA_RJMJB12_STR-SFSP_KURZ sy-vline 
WA_RJMJB12_STR-SPALTENANZ sy-vline 
WA_RJMJB12_STR-ANNSCHLUSS sy-vline 
WA_RJMJB12_STR-ANNSCHL_EH sy-vline 
WA_RJMJB12_STR-UHRZEIT_AS sy-vline 
WA_RJMJB12_STR-XIKO_EXP sy-vline 
WA_RJMJB12_STR-STRUSTUFE sy-vline 
WA_RJMJB12_STR-STUFE_DIFF sy-vline 
WA_RJMJB12_STR-BAUM_NR sy-vline 
WA_RJMJB12_STR-PRED sy-vline 
WA_RJMJB12_STR-XSUCCS sy-vline 
WA_RJMJB12_STR-IKOHY_ID sy-vline 
WA_RJMJB12_STR-X_MONTAG sy-vline 
WA_RJMJB12_STR-X_DIENSTAG sy-vline 
WA_RJMJB12_STR-X_MITTWOCH sy-vline 
WA_RJMJB12_STR-X_DONNERST sy-vline 
WA_RJMJB12_STR-X_FREITAG sy-vline 
WA_RJMJB12_STR-X_SAMSTAG sy-vline 
WA_RJMJB12_STR-X_SONNTAG sy-vline 
WA_RJMJB12_STR-X_ALLETAGE sy-vline 
WA_RJMJB12_STR-VT_OPTION sy-vline 
WA_RJMJB12_STR-VT_SIGN sy-vline 
WA_RJMJB12_STR-AKT_EINTR sy-vline 
WA_RJMJB12_STR-GES_EINTR sy-vline 
WA_RJMJB12_STR-FILTER_VON sy-vline 
WA_RJMJB12_STR-FILTER_BIS sy-vline 
WA_RJMJB12_STR-WEBPUBL_DAYS_STR sy-vline 
WA_RJMJB12_STR-WEBPUBL_DAYS_END sy-vline      INTO ld_text SEPARATED BY SPACE.

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