ABAP Select data from SAP table I9RMEOGAPK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP I9RMEOGAPK 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 I9RMEOGAPK. 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 I9RMEOGAPK 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_I9RMEOGAPK TYPE STANDARD TABLE OF I9RMEOGAPK,
      WA_I9RMEOGAPK TYPE I9RMEOGAPK,
      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: <I9RMEOGAPK> TYPE I9RMEOGAPK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_I9RMEOGAPK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM I9RMEOGAPK
  INTO TABLE IT_I9RMEOGAPK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM I9RMEOGAPK
*  INTO TABLE @DATA(IT_I9RMEOGAPK2).
*--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_I9RMEOGAPK INDEX 1 INTO DATA(WA_I9RMEOGAPK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_I9RMEOGAPK ASSIGNING <I9RMEOGAPK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<I9RMEOGAPK>-MANDT = 1.
<I9RMEOGAPK>-SICHTID = 1.
<I9RMEOGAPK>-DATUM = 1.
<I9RMEOGAPK>-AUSWERTUNG = 1.
<I9RMEOGAPK>-LZBDATUM = 1.

ENDLOOP.

LOOP AT IT_I9RMEOGAPK INTO WA_I9RMEOGAPK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_I9RMEOGAPK-LIQUIDST, sy-vline,
  WA_I9RMEOGAPK-BILKENNZ, sy-vline,
  WA_I9RMEOGAPK-LZB, sy-vline,
  WA_I9RMEOGAPK-DELTA_KNZ, sy-vline,
  WA_I9RMEOGAPK-AGIO_KNZ, sy-vline,
  WA_I9RMEOGAPK-RSIMLFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_I9RMEOGAPK 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_I9RMEOGAPK 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_I9RMEOGAPK INTO WA_I9RMEOGAPK.


*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 LZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOGAPK-LZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOGAPK-LZB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RSIMLFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOGAPK-RSIMLFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOGAPK-RSIMLFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RSIMBSTD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_I9RMEOGAPK-RSIMBSTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_I9RMEOGAPK-RSIMBSTD.
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_I9RMEOGAPK_STR, 
MANDT TYPE STRING,
SICHTID TYPE STRING,
DATUM TYPE STRING,
AUSWERTUNG TYPE STRING,
LZBDATUM TYPE STRING,
LIQUIDST TYPE STRING,
BILKENNZ TYPE STRING,
LZB TYPE STRING,
DELTA_KNZ TYPE STRING,
AGIO_KNZ TYPE STRING,
RSIMLFNR TYPE STRING,
RSIMBSTD TYPE STRING,
WAERS TYPE STRING,
DBS_A_Z TYPE STRING,
DBS_A_K TYPE STRING,
DBS_P_Z TYPE STRING,
DBS_P_K TYPE STRING,
SBS_A_Z TYPE STRING,
SBS_A_K TYPE STRING,
SBS_P_Z TYPE STRING,
SBS_P_K TYPE STRING,
ABL_A_Z TYPE STRING,
ABL_A_K TYPE STRING,
ABL_P_Z TYPE STRING,
ABL_P_K TYPE STRING,
CFL_A TYPE STRING,
CFL_P TYPE STRING,
LIQU_A TYPE STRING,
LIQU_P TYPE STRING,
GPZ_DB_A_Z TYPE STRING,
GPZ_DB_A_K TYPE STRING,
GPZ_DB_P_Z TYPE STRING,
GPZ_DB_P_K TYPE STRING,
GPZ_SB_A_Z TYPE STRING,
GPZ_SB_A_K TYPE STRING,
GPZ_SB_P_Z TYPE STRING,
GPZ_SB_P_K TYPE STRING,
GPZ_AB_A_Z TYPE STRING,
GPZ_AB_A_K TYPE STRING,
GPZ_AB_P_Z TYPE STRING,
GPZ_AB_P_K TYPE STRING,
DBS_A_Z_AW TYPE STRING,
DBS_A_K_AW TYPE STRING,
DBS_P_Z_AW TYPE STRING,
DBS_P_K_AW TYPE STRING,
SBS_A_Z_AW TYPE STRING,
SBS_A_K_AW TYPE STRING,
SBS_P_Z_AW TYPE STRING,
SBS_P_K_AW TYPE STRING,
ABL_A_Z_AW TYPE STRING,
ABL_A_K_AW TYPE STRING,
ABL_P_Z_AW TYPE STRING,
ABL_P_K_AW TYPE STRING,
CFL_A_AW TYPE STRING,
CFL_P_AW TYPE STRING,
LIQU_A_AW TYPE STRING,
LIQU_P_AW TYPE STRING,
GPW_DB_A_Z TYPE STRING,
GPW_DB_A_K TYPE STRING,
GPW_DB_P_Z TYPE STRING,
GPW_DB_P_K TYPE STRING,
GPW_SB_A_Z TYPE STRING,
GPW_SB_A_K TYPE STRING,
GPW_SB_P_Z TYPE STRING,
GPW_SB_P_K TYPE STRING,
GPW_AB_A_Z TYPE STRING,
GPW_AB_A_K TYPE STRING,
GPW_AB_P_Z TYPE STRING,
GPW_AB_P_K TYPE STRING,
ANZGW TYPE STRING,
BUKRS TYPE STRING,
VERDREGEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_I9RMEOGAPK_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_I9RMEOGAPK_STR-MANDT sy-vline 
WA_I9RMEOGAPK_STR-SICHTID sy-vline 
WA_I9RMEOGAPK_STR-DATUM sy-vline 
WA_I9RMEOGAPK_STR-AUSWERTUNG sy-vline 
WA_I9RMEOGAPK_STR-LZBDATUM sy-vline 
WA_I9RMEOGAPK_STR-LIQUIDST sy-vline 
WA_I9RMEOGAPK_STR-BILKENNZ sy-vline 
WA_I9RMEOGAPK_STR-LZB sy-vline 
WA_I9RMEOGAPK_STR-DELTA_KNZ sy-vline 
WA_I9RMEOGAPK_STR-AGIO_KNZ sy-vline 
WA_I9RMEOGAPK_STR-RSIMLFNR sy-vline 
WA_I9RMEOGAPK_STR-RSIMBSTD sy-vline 
WA_I9RMEOGAPK_STR-WAERS sy-vline 
WA_I9RMEOGAPK_STR-DBS_A_Z sy-vline 
WA_I9RMEOGAPK_STR-DBS_A_K sy-vline 
WA_I9RMEOGAPK_STR-DBS_P_Z sy-vline 
WA_I9RMEOGAPK_STR-DBS_P_K sy-vline 
WA_I9RMEOGAPK_STR-SBS_A_Z sy-vline 
WA_I9RMEOGAPK_STR-SBS_A_K sy-vline 
WA_I9RMEOGAPK_STR-SBS_P_Z sy-vline 
WA_I9RMEOGAPK_STR-SBS_P_K sy-vline 
WA_I9RMEOGAPK_STR-ABL_A_Z sy-vline 
WA_I9RMEOGAPK_STR-ABL_A_K sy-vline 
WA_I9RMEOGAPK_STR-ABL_P_Z sy-vline 
WA_I9RMEOGAPK_STR-ABL_P_K sy-vline 
WA_I9RMEOGAPK_STR-CFL_A sy-vline 
WA_I9RMEOGAPK_STR-CFL_P sy-vline 
WA_I9RMEOGAPK_STR-LIQU_A sy-vline 
WA_I9RMEOGAPK_STR-LIQU_P sy-vline 
WA_I9RMEOGAPK_STR-GPZ_DB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_DB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPZ_DB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_DB_P_K sy-vline 
WA_I9RMEOGAPK_STR-GPZ_SB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_SB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPZ_SB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_SB_P_K sy-vline 
WA_I9RMEOGAPK_STR-GPZ_AB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_AB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPZ_AB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPZ_AB_P_K sy-vline 
WA_I9RMEOGAPK_STR-DBS_A_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-DBS_A_K_AW sy-vline 
WA_I9RMEOGAPK_STR-DBS_P_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-DBS_P_K_AW sy-vline 
WA_I9RMEOGAPK_STR-SBS_A_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-SBS_A_K_AW sy-vline 
WA_I9RMEOGAPK_STR-SBS_P_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-SBS_P_K_AW sy-vline 
WA_I9RMEOGAPK_STR-ABL_A_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-ABL_A_K_AW sy-vline 
WA_I9RMEOGAPK_STR-ABL_P_Z_AW sy-vline 
WA_I9RMEOGAPK_STR-ABL_P_K_AW sy-vline 
WA_I9RMEOGAPK_STR-CFL_A_AW sy-vline 
WA_I9RMEOGAPK_STR-CFL_P_AW sy-vline 
WA_I9RMEOGAPK_STR-LIQU_A_AW sy-vline 
WA_I9RMEOGAPK_STR-LIQU_P_AW sy-vline 
WA_I9RMEOGAPK_STR-GPW_DB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_DB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPW_DB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_DB_P_K sy-vline 
WA_I9RMEOGAPK_STR-GPW_SB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_SB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPW_SB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_SB_P_K sy-vline 
WA_I9RMEOGAPK_STR-GPW_AB_A_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_AB_A_K sy-vline 
WA_I9RMEOGAPK_STR-GPW_AB_P_Z sy-vline 
WA_I9RMEOGAPK_STR-GPW_AB_P_K sy-vline 
WA_I9RMEOGAPK_STR-ANZGW sy-vline 
WA_I9RMEOGAPK_STR-BUKRS sy-vline 
WA_I9RMEOGAPK_STR-VERDREGEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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