ABAP Select data from SAP table IGRSELCS17HN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IGRSELCS17HN 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 IGRSELCS17HN. 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 IGRSELCS17HN 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_IGRSELCS17HN TYPE STANDARD TABLE OF IGRSELCS17HN,
      WA_IGRSELCS17HN TYPE IGRSELCS17HN,
      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: <IGRSELCS17HN> TYPE IGRSELCS17HN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IGRSELCS17HN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IGRSELCS17HN
  INTO TABLE IT_IGRSELCS17HN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IGRSELCS17HN
*  INTO TABLE @DATA(IT_IGRSELCS17HN2).
*--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_IGRSELCS17HN INDEX 1 INTO DATA(WA_IGRSELCS17HN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IGRSELCS17HN ASSIGNING <IGRSELCS17HN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IGRSELCS17HN>-MANDT = 1.
<IGRSELCS17HN>-UNIVERSALHIERHIERARCHYID = 1.
<IGRSELCS17HN>-HIERARCHYVERSION = 1.
<IGRSELCS17HN>-CONSOLIDATIONDIMENSION = 1.
<IGRSELCS17HN>-HIERARCHYNODE = 1.

ENDLOOP.

LOOP AT IT_IGRSELCS17HN INTO WA_IGRSELCS17HN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IGRSELCS17HN-PARENTNODE, sy-vline,
  WA_IGRSELCS17HN-VALIDITYENDDATE, sy-vline,
  WA_IGRSELCS17HN-VALIDITYSTARTDATE, sy-vline,
  WA_IGRSELCS17HN-NODETYPE, sy-vline,
  WA_IGRSELCS17HN-CONSOLIDATIONUNIT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_IGRSELCS17HN 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_IGRSELCS17HN 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_IGRSELCS17HN INTO WA_IGRSELCS17HN.


*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 AFIMC, internal->external for field CONSOLIDATIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_IGRSELCS17HN-CONSOLIDATIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IGRSELCS17HN-CONSOLIDATIONUNIT.
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_IGRSELCS17HN_STR, 
MANDT TYPE STRING,
UNIVERSALHIERHIERARCHYID TYPE STRING,
HIERARCHYVERSION TYPE STRING,
CONSOLIDATIONDIMENSION TYPE STRING,
HIERARCHYNODE TYPE STRING,
PARENTNODE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
NODETYPE TYPE STRING,
CONSOLIDATIONUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IGRSELCS17HN_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_IGRSELCS17HN_STR-MANDT sy-vline 
WA_IGRSELCS17HN_STR-UNIVERSALHIERHIERARCHYID sy-vline 
WA_IGRSELCS17HN_STR-HIERARCHYVERSION sy-vline 
WA_IGRSELCS17HN_STR-CONSOLIDATIONDIMENSION sy-vline 
WA_IGRSELCS17HN_STR-HIERARCHYNODE sy-vline 
WA_IGRSELCS17HN_STR-PARENTNODE sy-vline 
WA_IGRSELCS17HN_STR-VALIDITYENDDATE sy-vline 
WA_IGRSELCS17HN_STR-VALIDITYSTARTDATE sy-vline 
WA_IGRSELCS17HN_STR-NODETYPE sy-vline 
WA_IGRSELCS17HN_STR-CONSOLIDATIONUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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