ABAP Select data from SAP table IRATTAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRATTAB
*  INTO TABLE @DATA(IT_IRATTAB2).
*--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_IRATTAB INDEX 1 INTO DATA(WA_IRATTAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRATTAB>-ZTERM = 1.
<IRATTAB>-SKFBT = 1.
<IRATTAB>-WRBTR = 1.
<IRATTAB>-DMBTR = 1.
<IRATTAB>-DMBE2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRATTAB-DMBE3, sy-vline,
  WA_IRATTAB-WSKTO, sy-vline,
  WA_IRATTAB-SKNTO, sy-vline,
  WA_IRATTAB-SKNT2, sy-vline,
  WA_IRATTAB-SKNT3, sy-vline,
  WA_IRATTAB-PSWBT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRATTAB 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_IRATTAB 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_IRATTAB INTO WA_IRATTAB.


*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 AU132, internal->external for field SKFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-SKFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-SKFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-DMBE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-SKNT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-SKNT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-SKNT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-SKNT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PSWBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-PSWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-PSWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field QSSHB
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-QSSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-QSSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field QSFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-QSFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-QSFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field GBETR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-GBETR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-GBETR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field FDWBT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-FDWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-FDWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field BLNBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-BLNBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-BLNBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field KLIBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-KLIBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-KLIBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKFBTD
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-SKFBTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-SKFBTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWSTD
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-WMWSTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-WMWSTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWST
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-WMWST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-WMWST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWSTS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-MWSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-MWSTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWST2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-MWST2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-MWST2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWST3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-MWST3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-MWST3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field PYAMT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IRATTAB-PYAMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRATTAB-PYAMT.
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_IRATTAB_STR, 
ZTERM TYPE STRING,
SKFBT TYPE STRING,
WRBTR TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
WSKTO TYPE STRING,
SKNTO TYPE STRING,
SKNT2 TYPE STRING,
SKNT3 TYPE STRING,
PSWBT TYPE STRING,
QSSHB TYPE STRING,
QSFBT TYPE STRING,
GBETR TYPE STRING,
FDWBT TYPE STRING,
BLNBT TYPE STRING,
KLIBT TYPE STRING,
SKFBTD TYPE STRING,
WMWSTD TYPE STRING,
WMWST TYPE STRING,
MWSTS TYPE STRING,
MWST2 TYPE STRING,
MWST3 TYPE STRING,
PYAMT TYPE STRING,
LFDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRATTAB_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_IRATTAB_STR-ZTERM sy-vline 
WA_IRATTAB_STR-SKFBT sy-vline 
WA_IRATTAB_STR-WRBTR sy-vline 
WA_IRATTAB_STR-DMBTR sy-vline 
WA_IRATTAB_STR-DMBE2 sy-vline 
WA_IRATTAB_STR-DMBE3 sy-vline 
WA_IRATTAB_STR-WSKTO sy-vline 
WA_IRATTAB_STR-SKNTO sy-vline 
WA_IRATTAB_STR-SKNT2 sy-vline 
WA_IRATTAB_STR-SKNT3 sy-vline 
WA_IRATTAB_STR-PSWBT sy-vline 
WA_IRATTAB_STR-QSSHB sy-vline 
WA_IRATTAB_STR-QSFBT sy-vline 
WA_IRATTAB_STR-GBETR sy-vline 
WA_IRATTAB_STR-FDWBT sy-vline 
WA_IRATTAB_STR-BLNBT sy-vline 
WA_IRATTAB_STR-KLIBT sy-vline 
WA_IRATTAB_STR-SKFBTD sy-vline 
WA_IRATTAB_STR-WMWSTD sy-vline 
WA_IRATTAB_STR-WMWST sy-vline 
WA_IRATTAB_STR-MWSTS sy-vline 
WA_IRATTAB_STR-MWST2 sy-vline 
WA_IRATTAB_STR-MWST3 sy-vline 
WA_IRATTAB_STR-PYAMT sy-vline 
WA_IRATTAB_STR-LFDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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