ABAP Select data from SAP table REEXC_CONTROLLING_AREA_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REEXC_CONTROLLING_AREA_X
*  INTO TABLE @DATA(IT_REEXC_CONTROLLING_AREA_X2).
*--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_REEXC_CONTROLLING_AREA_X INDEX 1 INTO DATA(WA_REEXC_CONTROLLING_AREA_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REEXC_CONTROLLING_AREA_X>-MANDT = 1.
<REEXC_CONTROLLING_AREA_X>-KOKRS = 1.
<REEXC_CONTROLLING_AREA_X>-BEZEI = 1.
<REEXC_CONTROLLING_AREA_X>-WAERS = 1.
<REEXC_CONTROLLING_AREA_X>-KTOPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REEXC_CONTROLLING_AREA_X-LMONA, sy-vline,
  WA_REEXC_CONTROLLING_AREA_X-KOKFI, sy-vline,
  WA_REEXC_CONTROLLING_AREA_X-LOGSYSTEM, sy-vline,
  WA_REEXC_CONTROLLING_AREA_X-ALEMT, sy-vline,
  WA_REEXC_CONTROLLING_AREA_X-MD_LOGSYSTEM, sy-vline,
  WA_REEXC_CONTROLLING_AREA_X-KHINR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REEXC_CONTROLLING_AREA_X 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_REEXC_CONTROLLING_AREA_X 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_REEXC_CONTROLLING_AREA_X INTO WA_REEXC_CONTROLLING_AREA_X.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field DEFPRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REEXC_CONTROLLING_AREA_X-DEFPRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REEXC_CONTROLLING_AREA_X-DEFPRCTR.
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_REEXC_CONTROLLING_AREA_X_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
BEZEI TYPE STRING,
WAERS TYPE STRING,
KTOPL TYPE STRING,
LMONA TYPE STRING,
KOKFI TYPE STRING,
LOGSYSTEM TYPE STRING,
ALEMT TYPE STRING,
MD_LOGSYSTEM TYPE STRING,
KHINR TYPE STRING,
KOMP1 TYPE STRING,
KOMP0 TYPE STRING,
KOMP2 TYPE STRING,
ERKRS TYPE STRING,
DPRCT TYPE STRING,
PHINR TYPE STRING,
PCLDG TYPE STRING,
PCBEL TYPE STRING,
XWBUK TYPE STRING,
BPHINR TYPE STRING,
XBPALE TYPE STRING,
KSTAR_FIN TYPE STRING,
KSTAR_FID TYPE STRING,
PCACUR TYPE STRING,
PCACURTP TYPE STRING,
PCATRCUR TYPE STRING,
CTYP TYPE STRING,
RCLAC TYPE STRING,
BLART TYPE STRING,
FIKRS TYPE STRING,
RCL_PRIMAC TYPE STRING,
PCA_ALEMT TYPE STRING,
PCA_VALU TYPE STRING,
CVPROF TYPE STRING,
CVACT TYPE STRING,
VNAME TYPE STRING,
PCA_ACC_DIFF TYPE STRING,
TP_VALOHB TYPE STRING,
DEFPRCTR TYPE STRING,
F_OBSOLETE TYPE STRING,
LEADING_FSV TYPE STRING,
AUTH_USE_NO_STD TYPE STRING,
AUTH_USE_ADD1 TYPE STRING,
AUTH_USE_ADD2 TYPE STRING,
AUTH_KE_NO_STD TYPE STRING,
AUTH_KE_USE_ADD1 TYPE STRING,
AUTH_KE_USE_ADD2 TYPE STRING,
OBJCUR_USE TYPE STRING,
OBJCUR_KURST TYPE STRING,
OBJCUR_CURDT TYPE STRING,
OBJCUR_SRCCT TYPE STRING,
OBJCUR_SRCAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REEXC_CONTROLLING_AREA_X_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_REEXC_CONTROLLING_AREA_X_STR-MANDT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KOKRS sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-BEZEI sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-WAERS sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KTOPL sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-LMONA sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KOKFI sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-LOGSYSTEM sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-ALEMT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-MD_LOGSYSTEM sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KHINR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KOMP1 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KOMP0 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KOMP2 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-ERKRS sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-DPRCT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PHINR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCLDG sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCBEL sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-XWBUK sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-BPHINR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-XBPALE sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KSTAR_FIN sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-KSTAR_FID sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCACUR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCACURTP sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCATRCUR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-CTYP sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-RCLAC sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-BLART sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-FIKRS sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-RCL_PRIMAC sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCA_ALEMT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCA_VALU sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-CVPROF sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-CVACT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-VNAME sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-PCA_ACC_DIFF sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-TP_VALOHB sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-DEFPRCTR sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-F_OBSOLETE sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-LEADING_FSV sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_USE_NO_STD sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_USE_ADD1 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_USE_ADD2 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_KE_NO_STD sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_KE_USE_ADD1 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-AUTH_KE_USE_ADD2 sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-OBJCUR_USE sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-OBJCUR_KURST sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-OBJCUR_CURDT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-OBJCUR_SRCCT sy-vline 
WA_REEXC_CONTROLLING_AREA_X_STR-OBJCUR_SRCAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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