ABAP Select data from SAP table DIILOA 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 DIILOA 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 DIILOA. 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 DIILOA 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_DIILOA TYPE STANDARD TABLE OF DIILOA,
      WA_DIILOA TYPE DIILOA,
      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: <DIILOA> TYPE DIILOA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIILOA
*  INTO TABLE @DATA(IT_DIILOA2).
*--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_DIILOA INDEX 1 INTO DATA(WA_DIILOA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIILOA>-MANDT = 1.
<DIILOA>-ILOAN = 1.
<DIILOA>-TPLNR = 1.
<DIILOA>-ABCKZ = 1.
<DIILOA>-ABCKZI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIILOA-EQFNR, sy-vline,
  WA_DIILOA-EQFNRI, sy-vline,
  WA_DIILOA-SWERK, sy-vline,
  WA_DIILOA-SWERKI, sy-vline,
  WA_DIILOA-STORT, sy-vline,
  WA_DIILOA-STORTI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIILOA 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_DIILOA 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_DIILOA INTO WA_DIILOA.


*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 TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_DIILOA-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIILOA-TPLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_DIILOA-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIILOA-PROID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIILOA-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIILOA-ADRNR.
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_DIILOA_STR, 
MANDT TYPE STRING,
ILOAN TYPE STRING,
TPLNR TYPE STRING,
ABCKZ TYPE STRING,
ABCKZI TYPE STRING,
EQFNR TYPE STRING,
EQFNRI TYPE STRING,
SWERK TYPE STRING,
SWERKI TYPE STRING,
STORT TYPE STRING,
STORTI TYPE STRING,
MSGRP TYPE STRING,
MSGRPI TYPE STRING,
BEBER TYPE STRING,
BEBERI TYPE STRING,
CR_OBJTY TYPE STRING,
PPSID TYPE STRING,
PPSIDI TYPE STRING,
GSBER TYPE STRING,
GSBERI TYPE STRING,
KOKRS TYPE STRING,
KOKRSI TYPE STRING,
KOSTL TYPE STRING,
KOSTLI TYPE STRING,
PROID TYPE STRING,
PROIDI TYPE STRING,
BUKRS TYPE STRING,
BUKRSI TYPE STRING,
ANLNR TYPE STRING,
ANLNRI TYPE STRING,
ANLUN TYPE STRING,
ANLUNI TYPE STRING,
DAUFN TYPE STRING,
DAUFNI TYPE STRING,
AUFNR TYPE STRING,
AUFNRI TYPE STRING,
TPLNRI TYPE STRING,
VKORG TYPE STRING,
VKORGI TYPE STRING,
VTWEG TYPE STRING,
VTWEGI TYPE STRING,
SPART TYPE STRING,
SPARTI TYPE STRING,
ADRNR TYPE STRING,
ADRNRI TYPE STRING,
OWNER TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
PLTXT TYPE STRING,
ARBPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIILOA_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_DIILOA_STR-MANDT sy-vline 
WA_DIILOA_STR-ILOAN sy-vline 
WA_DIILOA_STR-TPLNR sy-vline 
WA_DIILOA_STR-ABCKZ sy-vline 
WA_DIILOA_STR-ABCKZI sy-vline 
WA_DIILOA_STR-EQFNR sy-vline 
WA_DIILOA_STR-EQFNRI sy-vline 
WA_DIILOA_STR-SWERK sy-vline 
WA_DIILOA_STR-SWERKI sy-vline 
WA_DIILOA_STR-STORT sy-vline 
WA_DIILOA_STR-STORTI sy-vline 
WA_DIILOA_STR-MSGRP sy-vline 
WA_DIILOA_STR-MSGRPI sy-vline 
WA_DIILOA_STR-BEBER sy-vline 
WA_DIILOA_STR-BEBERI sy-vline 
WA_DIILOA_STR-CR_OBJTY sy-vline 
WA_DIILOA_STR-PPSID sy-vline 
WA_DIILOA_STR-PPSIDI sy-vline 
WA_DIILOA_STR-GSBER sy-vline 
WA_DIILOA_STR-GSBERI sy-vline 
WA_DIILOA_STR-KOKRS sy-vline 
WA_DIILOA_STR-KOKRSI sy-vline 
WA_DIILOA_STR-KOSTL sy-vline 
WA_DIILOA_STR-KOSTLI sy-vline 
WA_DIILOA_STR-PROID sy-vline 
WA_DIILOA_STR-PROIDI sy-vline 
WA_DIILOA_STR-BUKRS sy-vline 
WA_DIILOA_STR-BUKRSI sy-vline 
WA_DIILOA_STR-ANLNR sy-vline 
WA_DIILOA_STR-ANLNRI sy-vline 
WA_DIILOA_STR-ANLUN sy-vline 
WA_DIILOA_STR-ANLUNI sy-vline 
WA_DIILOA_STR-DAUFN sy-vline 
WA_DIILOA_STR-DAUFNI sy-vline 
WA_DIILOA_STR-AUFNR sy-vline 
WA_DIILOA_STR-AUFNRI sy-vline 
WA_DIILOA_STR-TPLNRI sy-vline 
WA_DIILOA_STR-VKORG sy-vline 
WA_DIILOA_STR-VKORGI sy-vline 
WA_DIILOA_STR-VTWEG sy-vline 
WA_DIILOA_STR-VTWEGI sy-vline 
WA_DIILOA_STR-SPART sy-vline 
WA_DIILOA_STR-SPARTI sy-vline 
WA_DIILOA_STR-ADRNR sy-vline 
WA_DIILOA_STR-ADRNRI sy-vline 
WA_DIILOA_STR-OWNER sy-vline 
WA_DIILOA_STR-VKBUR sy-vline 
WA_DIILOA_STR-VKGRP sy-vline 
WA_DIILOA_STR-PLTXT sy-vline 
WA_DIILOA_STR-ARBPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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