ABAP Select data from SAP table UHMS_HIER_ID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UHMS_HIER_ID
*  INTO TABLE @DATA(IT_UHMS_HIER_ID2).
*--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_UHMS_HIER_ID INDEX 1 INTO DATA(WA_UHMS_HIER_ID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UHMS_HIER_ID>-MANDT = 1.
<UHMS_HIER_ID>-HIERARCHYTYPE = 1.
<UHMS_HIER_ID>-HIERARCHYOLDID = 1.
<UHMS_HIER_ID>-SUBCLASS = 1.
<UHMS_HIER_ID>-HIERARCHYNEWID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UHMS_HIER_ID-HIERARCHYMIGRATIONSTATUS, sy-vline,
  WA_UHMS_HIER_ID-HIERARCHYMIGRATIONSTATUSNAME, sy-vline,
  WA_UHMS_HIER_ID-EDITABLEINSRCAPP, sy-vline,
  WA_UHMS_HIER_ID-LASTUPDATEDBY, sy-vline,
  WA_UHMS_HIER_ID-LASTUPDATEDAT, sy-vline,
  WA_UHMS_HIER_ID-JOBID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UHMS_HIER_ID 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_UHMS_HIER_ID 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_UHMS_HIER_ID INTO WA_UHMS_HIER_ID.


*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_UHMS_HIER_ID_STR, 
MANDT TYPE STRING,
HIERARCHYTYPE TYPE STRING,
HIERARCHYOLDID TYPE STRING,
SUBCLASS TYPE STRING,
HIERARCHYNEWID TYPE STRING,
HIERARCHYMIGRATIONSTATUS TYPE STRING,
HIERARCHYMIGRATIONSTATUSNAME TYPE STRING,
EDITABLEINSRCAPP TYPE STRING,
LASTUPDATEDBY TYPE STRING,
LASTUPDATEDAT TYPE STRING,
JOBID TYPE STRING,
JOBNAME TYPE STRING,
LOGID TYPE STRING,
JOBFAILFLAG TYPE STRING,
HIERARCHYTYPENAME TYPE STRING,
HIERARCHYTYPEISCOMPLETED TYPE STRING,
SUBCLASSTEXT TYPE STRING,
LASTUPDATEDONDATE TYPE STRING,
LASTUPDATEDATTIME TYPE STRING,
HIERARCHYIDTEXT TYPE STRING,
HIERARCHYNEWTEXT TYPE STRING,
HIERARCHYOLDSTATUS TYPE STRING,
HIERARCHYOLDSTATUSNAME TYPE STRING,
NAVIGATIONJSON TYPE STRING,
HIERARCHYTYPEEDITABLE TYPE STRING,
HIERARCHYTYPEALLOWNEWID TYPE STRING,
HIERTYPEALLOWPARTIALMIGRATION TYPE STRING,
NODETYPE TYPE STRING,
NODETYPETEXT TYPE STRING,
REFERENCE TYPE STRING,
CID_REF TYPE STRING,
DELETABLE TYPE STRING,
ADDEDBYUSER TYPE STRING,
ADDEDBYUSERTEXT TYPE STRING,
HIERARCHYDEPENDENCY TYPE STRING,
HIERARCHYNEWIDMAXLENGTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UHMS_HIER_ID_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_UHMS_HIER_ID_STR-MANDT sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYTYPE sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYOLDID sy-vline 
WA_UHMS_HIER_ID_STR-SUBCLASS sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYNEWID sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYMIGRATIONSTATUS sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYMIGRATIONSTATUSNAME sy-vline 
WA_UHMS_HIER_ID_STR-EDITABLEINSRCAPP sy-vline 
WA_UHMS_HIER_ID_STR-LASTUPDATEDBY sy-vline 
WA_UHMS_HIER_ID_STR-LASTUPDATEDAT sy-vline 
WA_UHMS_HIER_ID_STR-JOBID sy-vline 
WA_UHMS_HIER_ID_STR-JOBNAME sy-vline 
WA_UHMS_HIER_ID_STR-LOGID sy-vline 
WA_UHMS_HIER_ID_STR-JOBFAILFLAG sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYTYPENAME sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYTYPEISCOMPLETED sy-vline 
WA_UHMS_HIER_ID_STR-SUBCLASSTEXT sy-vline 
WA_UHMS_HIER_ID_STR-LASTUPDATEDONDATE sy-vline 
WA_UHMS_HIER_ID_STR-LASTUPDATEDATTIME sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYIDTEXT sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYNEWTEXT sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYOLDSTATUS sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYOLDSTATUSNAME sy-vline 
WA_UHMS_HIER_ID_STR-NAVIGATIONJSON sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYTYPEEDITABLE sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYTYPEALLOWNEWID sy-vline 
WA_UHMS_HIER_ID_STR-HIERTYPEALLOWPARTIALMIGRATION sy-vline 
WA_UHMS_HIER_ID_STR-NODETYPE sy-vline 
WA_UHMS_HIER_ID_STR-NODETYPETEXT sy-vline 
WA_UHMS_HIER_ID_STR-REFERENCE sy-vline 
WA_UHMS_HIER_ID_STR-CID_REF sy-vline 
WA_UHMS_HIER_ID_STR-DELETABLE sy-vline 
WA_UHMS_HIER_ID_STR-ADDEDBYUSER sy-vline 
WA_UHMS_HIER_ID_STR-ADDEDBYUSERTEXT sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYDEPENDENCY sy-vline 
WA_UHMS_HIER_ID_STR-HIERARCHYNEWIDMAXLENGTH sy-vline      INTO ld_text SEPARATED BY SPACE.

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