ABAP Select data from SAP table IUUC_ETR_RES_TBL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUUC_ETR_RES_TBL
*  INTO TABLE @DATA(IT_IUUC_ETR_RES_TBL2).
*--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_IUUC_ETR_RES_TBL INDEX 1 INTO DATA(WA_IUUC_ETR_RES_TBL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUUC_ETR_RES_TBL>-MTID = 1.
<IUUC_ETR_RES_TBL>-TIMESTAMP = 1.
<IUUC_ETR_RES_TBL>-TRKORR = 1.
<IUUC_ETR_RES_TBL>-AS4POS = 1.
<IUUC_ETR_RES_TBL>-TABNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUUC_ETR_RES_TBL-CHANGE_TYPE, sy-vline,
  WA_IUUC_ETR_RES_TBL-ITEM_NUMBER, sy-vline,
  WA_IUUC_ETR_RES_TBL-TABCLASS, sy-vline,
  WA_IUUC_ETR_RES_TBL-TABKEY, sy-vline,
  WA_IUUC_ETR_RES_TBL-METHODNAME, sy-vline,
  WA_IUUC_ETR_RES_TBL-FIELDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUUC_ETR_RES_TBL 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_IUUC_ETR_RES_TBL 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_IUUC_ETR_RES_TBL INTO WA_IUUC_ETR_RES_TBL.


*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_IUUC_ETR_RES_TBL_STR, 
MTID TYPE STRING,
TIMESTAMP TYPE STRING,
TRKORR TYPE STRING,
AS4POS TYPE STRING,
TABNAME TYPE STRING,
CHANGE_TYPE TYPE STRING,
ITEM_NUMBER TYPE STRING,
TABCLASS TYPE STRING,
TABKEY TYPE STRING,
METHODNAME TYPE STRING,
FIELDNAME TYPE STRING,
FIELDPOSITION TYPE STRING,
KEYFLAG TYPE STRING,
ROLLNAME TYPE STRING,
DOMNAME TYPE STRING,
PRECFIELD TYPE STRING,
PO_CURRENT TYPE STRING,
PO_POSSIBLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUUC_ETR_RES_TBL_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_IUUC_ETR_RES_TBL_STR-MTID sy-vline 
WA_IUUC_ETR_RES_TBL_STR-TIMESTAMP sy-vline 
WA_IUUC_ETR_RES_TBL_STR-TRKORR sy-vline 
WA_IUUC_ETR_RES_TBL_STR-AS4POS sy-vline 
WA_IUUC_ETR_RES_TBL_STR-TABNAME sy-vline 
WA_IUUC_ETR_RES_TBL_STR-CHANGE_TYPE sy-vline 
WA_IUUC_ETR_RES_TBL_STR-ITEM_NUMBER sy-vline 
WA_IUUC_ETR_RES_TBL_STR-TABCLASS sy-vline 
WA_IUUC_ETR_RES_TBL_STR-TABKEY sy-vline 
WA_IUUC_ETR_RES_TBL_STR-METHODNAME sy-vline 
WA_IUUC_ETR_RES_TBL_STR-FIELDNAME sy-vline 
WA_IUUC_ETR_RES_TBL_STR-FIELDPOSITION sy-vline 
WA_IUUC_ETR_RES_TBL_STR-KEYFLAG sy-vline 
WA_IUUC_ETR_RES_TBL_STR-ROLLNAME sy-vline 
WA_IUUC_ETR_RES_TBL_STR-DOMNAME sy-vline 
WA_IUUC_ETR_RES_TBL_STR-PRECFIELD sy-vline 
WA_IUUC_ETR_RES_TBL_STR-PO_CURRENT sy-vline 
WA_IUUC_ETR_RES_TBL_STR-PO_POSSIBLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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