ABAP Select data from SAP table ICL_HISTPOS_GUI 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 ICL_HISTPOS_GUI 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 ICL_HISTPOS_GUI. 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 ICL_HISTPOS_GUI 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_ICL_HISTPOS_GUI TYPE STANDARD TABLE OF ICL_HISTPOS_GUI,
      WA_ICL_HISTPOS_GUI TYPE ICL_HISTPOS_GUI,
      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: <ICL_HISTPOS_GUI> TYPE ICL_HISTPOS_GUI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_HISTPOS_GUI
*  INTO TABLE @DATA(IT_ICL_HISTPOS_GUI2).
*--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_ICL_HISTPOS_GUI INDEX 1 INTO DATA(WA_ICL_HISTPOS_GUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_HISTPOS_GUI>-TABNAME = 1.
<ICL_HISTPOS_GUI>-TABKEY = 1.
<ICL_HISTPOS_GUI>-KEYLEN = 1.
<ICL_HISTPOS_GUI>-CHNGIND = 1.
<ICL_HISTPOS_GUI>-CHANGETIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_HISTPOS_GUI-CHANGEDBY, sy-vline,
  WA_ICL_HISTPOS_GUI-FNAME, sy-vline,
  WA_ICL_HISTPOS_GUI-FTEXT, sy-vline,
  WA_ICL_HISTPOS_GUI-TEXTART, sy-vline,
  WA_ICL_HISTPOS_GUI-SPRACHE, sy-vline,
  WA_ICL_HISTPOS_GUI-TEXT_CASE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_HISTPOS_GUI 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_ICL_HISTPOS_GUI 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_ICL_HISTPOS_GUI INTO WA_ICL_HISTPOS_GUI.


*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 TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICL_HISTPOS_GUI-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_HISTPOS_GUI-CHANGETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_HISTPOS_GUI-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_HISTPOS_GUI-SPRACHE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CLAIM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_HISTPOS_GUI-CLAIM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_HISTPOS_GUI-CLAIM.
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_ICL_HISTPOS_GUI_STR, 
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
CHANGETIME TYPE STRING,
CHANGEDBY TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
TEXTART TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
OUTLEN TYPE STRING,
F_OLD TYPE STRING,
F_OLD_OUT TYPE STRING,
F_NEW TYPE STRING,
F_NEW_OUT TYPE STRING,
TABNAME1 TYPE STRING,
OVERDESC TYPE STRING,
TABNAMETXT TYPE STRING,
CLAIM TYPE STRING,
SUBKEYDESC TYPE STRING,
CHANGETIMED TYPE STRING,
CHANGETIMET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_HISTPOS_GUI_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_ICL_HISTPOS_GUI_STR-TABNAME sy-vline 
WA_ICL_HISTPOS_GUI_STR-TABKEY sy-vline 
WA_ICL_HISTPOS_GUI_STR-KEYLEN sy-vline 
WA_ICL_HISTPOS_GUI_STR-CHNGIND sy-vline 
WA_ICL_HISTPOS_GUI_STR-CHANGETIME sy-vline 
WA_ICL_HISTPOS_GUI_STR-CHANGEDBY sy-vline 
WA_ICL_HISTPOS_GUI_STR-FNAME sy-vline 
WA_ICL_HISTPOS_GUI_STR-FTEXT sy-vline 
WA_ICL_HISTPOS_GUI_STR-TEXTART sy-vline 
WA_ICL_HISTPOS_GUI_STR-SPRACHE sy-vline 
WA_ICL_HISTPOS_GUI_STR-TEXT_CASE sy-vline 
WA_ICL_HISTPOS_GUI_STR-OUTLEN sy-vline 
WA_ICL_HISTPOS_GUI_STR-F_OLD sy-vline 
WA_ICL_HISTPOS_GUI_STR-F_OLD_OUT sy-vline 
WA_ICL_HISTPOS_GUI_STR-F_NEW sy-vline 
WA_ICL_HISTPOS_GUI_STR-F_NEW_OUT sy-vline 
WA_ICL_HISTPOS_GUI_STR-TABNAME1 sy-vline 
WA_ICL_HISTPOS_GUI_STR-OVERDESC sy-vline 
WA_ICL_HISTPOS_GUI_STR-TABNAMETXT sy-vline 
WA_ICL_HISTPOS_GUI_STR-CLAIM sy-vline 
WA_ICL_HISTPOS_GUI_STR-SUBKEYDESC sy-vline 
WA_ICL_HISTPOS_GUI_STR-CHANGETIMED sy-vline 
WA_ICL_HISTPOS_GUI_STR-CHANGETIMET sy-vline      INTO ld_text SEPARATED BY SPACE.

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