ABAP Select data from SAP table I9RMEOXGAPK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP I9RMEOXGAPK 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 I9RMEOXGAPK. 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 I9RMEOXGAPK 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_I9RMEOXGAPK TYPE STANDARD TABLE OF I9RMEOXGAPK,
      WA_I9RMEOXGAPK TYPE I9RMEOXGAPK,
      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: <I9RMEOXGAPK> TYPE I9RMEOXGAPK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_I9RMEOXGAPK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM I9RMEOXGAPK
  INTO TABLE IT_I9RMEOXGAPK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM I9RMEOXGAPK
*  INTO TABLE @DATA(IT_I9RMEOXGAPK2).
*--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_I9RMEOXGAPK INDEX 1 INTO DATA(WA_I9RMEOXGAPK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_I9RMEOXGAPK ASSIGNING <I9RMEOXGAPK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<I9RMEOXGAPK>-MANDT = 1.
<I9RMEOXGAPK>-DATUM = 1.
<I9RMEOXGAPK>-HORIGAP = 1.
<I9RMEOXGAPK>-AUSWERTUNG = 1.
<I9RMEOXGAPK>-GAPART = 1.

ENDLOOP.

LOOP AT IT_I9RMEOXGAPK INTO WA_I9RMEOXGAPK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_I9RMEOXGAPK-SICHTID, sy-vline,
  WA_I9RMEOXGAPK-PHID, sy-vline,
  WA_I9RMEOXGAPK-LZBDATUM, sy-vline,
  WA_I9RMEOXGAPK-NAME, sy-vline,
  WA_I9RMEOXGAPK-LIQUIDST, sy-vline,
  WA_I9RMEOXGAPK-BILKENNZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_I9RMEOXGAPK 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_I9RMEOXGAPK 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_I9RMEOXGAPK INTO WA_I9RMEOXGAPK.


*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 PNAME, internal->external for field NAME
CALL FUNCTION 'CONVERSION_EXIT_PNAME_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOXGAPK-NAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOXGAPK-NAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RSIMLFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOXGAPK-RSIMLFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOXGAPK-RSIMLFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RSIMBSTD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOXGAPK-RSIMBSTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOXGAPK-RSIMBSTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOXGAPK-LZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOXGAPK-LZB.
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_I9RMEOXGAPK_STR, 
MANDT TYPE STRING,
DATUM TYPE STRING,
HORIGAP TYPE STRING,
AUSWERTUNG TYPE STRING,
GAPART TYPE STRING,
SICHTID TYPE STRING,
PHID TYPE STRING,
LZBDATUM TYPE STRING,
NAME TYPE STRING,
LIQUIDST TYPE STRING,
BILKENNZ TYPE STRING,
AKTPASS TYPE STRING,
ZINSKAPB TYPE STRING,
ZINSTILG TYPE STRING,
RSIMLFNR TYPE STRING,
RSIMBSTD TYPE STRING,
WAERS TYPE STRING,
DBS TYPE STRING,
SBS TYPE STRING,
ABL TYPE STRING,
CFL TYPE STRING,
LIQU TYPE STRING,
GPZ_DBS TYPE STRING,
GPZ_SBS TYPE STRING,
GPZ_ABL TYPE STRING,
ANZGW TYPE STRING,
DBS_AW TYPE STRING,
SBS_AW TYPE STRING,
ABL_AW TYPE STRING,
CFL_AW TYPE STRING,
LIQU_AW TYPE STRING,
GPZ_DBS_AW TYPE STRING,
GPZ_SBS_AW TYPE STRING,
GPZ_ABL_AW TYPE STRING,
BUKRS TYPE STRING,
VERDREGEL TYPE STRING,
PKNOTEN TYPE STRING,
LZB TYPE STRING,
NUMBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_I9RMEOXGAPK_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_I9RMEOXGAPK_STR-MANDT sy-vline 
WA_I9RMEOXGAPK_STR-DATUM sy-vline 
WA_I9RMEOXGAPK_STR-HORIGAP sy-vline 
WA_I9RMEOXGAPK_STR-AUSWERTUNG sy-vline 
WA_I9RMEOXGAPK_STR-GAPART sy-vline 
WA_I9RMEOXGAPK_STR-SICHTID sy-vline 
WA_I9RMEOXGAPK_STR-PHID sy-vline 
WA_I9RMEOXGAPK_STR-LZBDATUM sy-vline 
WA_I9RMEOXGAPK_STR-NAME sy-vline 
WA_I9RMEOXGAPK_STR-LIQUIDST sy-vline 
WA_I9RMEOXGAPK_STR-BILKENNZ sy-vline 
WA_I9RMEOXGAPK_STR-AKTPASS sy-vline 
WA_I9RMEOXGAPK_STR-ZINSKAPB sy-vline 
WA_I9RMEOXGAPK_STR-ZINSTILG sy-vline 
WA_I9RMEOXGAPK_STR-RSIMLFNR sy-vline 
WA_I9RMEOXGAPK_STR-RSIMBSTD sy-vline 
WA_I9RMEOXGAPK_STR-WAERS sy-vline 
WA_I9RMEOXGAPK_STR-DBS sy-vline 
WA_I9RMEOXGAPK_STR-SBS sy-vline 
WA_I9RMEOXGAPK_STR-ABL sy-vline 
WA_I9RMEOXGAPK_STR-CFL sy-vline 
WA_I9RMEOXGAPK_STR-LIQU sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_DBS sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_SBS sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_ABL sy-vline 
WA_I9RMEOXGAPK_STR-ANZGW sy-vline 
WA_I9RMEOXGAPK_STR-DBS_AW sy-vline 
WA_I9RMEOXGAPK_STR-SBS_AW sy-vline 
WA_I9RMEOXGAPK_STR-ABL_AW sy-vline 
WA_I9RMEOXGAPK_STR-CFL_AW sy-vline 
WA_I9RMEOXGAPK_STR-LIQU_AW sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_DBS_AW sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_SBS_AW sy-vline 
WA_I9RMEOXGAPK_STR-GPZ_ABL_AW sy-vline 
WA_I9RMEOXGAPK_STR-BUKRS sy-vline 
WA_I9RMEOXGAPK_STR-VERDREGEL sy-vline 
WA_I9RMEOXGAPK_STR-PKNOTEN sy-vline 
WA_I9RMEOXGAPK_STR-LZB sy-vline 
WA_I9RMEOXGAPK_STR-NUMBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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