ABAP Select data from SAP table ROIUX3_TX_EDI_813_ISA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIUX3_TX_EDI_813_ISA 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 ROIUX3_TX_EDI_813_ISA. 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 ROIUX3_TX_EDI_813_ISA 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_ROIUX3_TX_EDI_813_ISA TYPE STANDARD TABLE OF ROIUX3_TX_EDI_813_ISA,
      WA_ROIUX3_TX_EDI_813_ISA TYPE ROIUX3_TX_EDI_813_ISA,
      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: <ROIUX3_TX_EDI_813_ISA> TYPE ROIUX3_TX_EDI_813_ISA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIUX3_TX_EDI_813_ISA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIUX3_TX_EDI_813_ISA
  INTO TABLE IT_ROIUX3_TX_EDI_813_ISA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIUX3_TX_EDI_813_ISA
*  INTO TABLE @DATA(IT_ROIUX3_TX_EDI_813_ISA2).
*--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_ROIUX3_TX_EDI_813_ISA INDEX 1 INTO DATA(WA_ROIUX3_TX_EDI_813_ISA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIUX3_TX_EDI_813_ISA ASSIGNING <ROIUX3_TX_EDI_813_ISA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIUX3_TX_EDI_813_ISA>-ISA01 = 1.
<ROIUX3_TX_EDI_813_ISA>-ISA02 = 1.
<ROIUX3_TX_EDI_813_ISA>-ISA03 = 1.
<ROIUX3_TX_EDI_813_ISA>-ISA04 = 1.
<ROIUX3_TX_EDI_813_ISA>-ISA05 = 1.

ENDLOOP.

LOOP AT IT_ROIUX3_TX_EDI_813_ISA INTO WA_ROIUX3_TX_EDI_813_ISA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIUX3_TX_EDI_813_ISA-ISA06, sy-vline,
  WA_ROIUX3_TX_EDI_813_ISA-ISA07, sy-vline,
  WA_ROIUX3_TX_EDI_813_ISA-ISA08, sy-vline,
  WA_ROIUX3_TX_EDI_813_ISA-ISA09, sy-vline,
  WA_ROIUX3_TX_EDI_813_ISA-ISA10, sy-vline,
  WA_ROIUX3_TX_EDI_813_ISA-ISA11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIUX3_TX_EDI_813_ISA 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_ROIUX3_TX_EDI_813_ISA 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_ROIUX3_TX_EDI_813_ISA INTO WA_ROIUX3_TX_EDI_813_ISA.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ROIUX3_TX_EDI_813_ISA_STR, 
ISA01 TYPE STRING,
ISA02 TYPE STRING,
ISA03 TYPE STRING,
ISA04 TYPE STRING,
ISA05 TYPE STRING,
ISA06 TYPE STRING,
ISA07 TYPE STRING,
ISA08 TYPE STRING,
ISA09 TYPE STRING,
ISA10 TYPE STRING,
ISA11 TYPE STRING,
ISA12 TYPE STRING,
ISA13 TYPE STRING,
ISA14 TYPE STRING,
ISA15 TYPE STRING,
ISA16 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIUX3_TX_EDI_813_ISA_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_ROIUX3_TX_EDI_813_ISA_STR-ISA01 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA02 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA03 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA04 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA05 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA06 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA07 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA08 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA09 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA10 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA11 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA12 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA13 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA14 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA15 sy-vline 
WA_ROIUX3_TX_EDI_813_ISA_STR-ISA16 sy-vline      INTO ld_text SEPARATED BY SPACE.

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