ABAP Select data from SAP table SMPOSCOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMPOSCOL
*  INTO TABLE @DATA(IT_SMPOSCOL2).
*--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_SMPOSCOL INDEX 1 INTO DATA(WA_SMPOSCOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMPOSCOL>-COL_NAME = 1.
<SMPOSCOL>-COL_ALIGNMENT = 1.
<SMPOSCOL>-COL_WIDTH = 1.
<SMPOSCOL>-COL_WIDTH_CHAR = 1.
<SMPOSCOL>-COL_HIDDEN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMPOSCOL-COL_SELECTABLE, sy-vline,
  WA_SMPOSCOL-ITEM_NODE_KEY, sy-vline,
  WA_SMPOSCOL-ITEM_ITEM_NAME, sy-vline,
  WA_SMPOSCOL-ITEM_CLASS, sy-vline,
  WA_SMPOSCOL-ITEM_FONT, sy-vline,
  WA_SMPOSCOL-ITEM_DISABLED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMPOSCOL 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_SMPOSCOL 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_SMPOSCOL INTO WA_SMPOSCOL.


*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_SMPOSCOL_STR, 
COL_NAME TYPE STRING,
COL_ALIGNMENT TYPE STRING,
COL_WIDTH TYPE STRING,
COL_WIDTH_CHAR TYPE STRING,
COL_HIDDEN TYPE STRING,
COL_SELECTABLE TYPE STRING,
ITEM_NODE_KEY TYPE STRING,
ITEM_ITEM_NAME TYPE STRING,
ITEM_CLASS TYPE STRING,
ITEM_FONT TYPE STRING,
ITEM_DISABLED TYPE STRING,
ITEM_EDITABLE TYPE STRING,
ITEM_HIDDEN TYPE STRING,
ITEM_ALIGNMENT TYPE STRING,
ITEM_T_IMAGE TYPE STRING,
ITEM_CHOSEN TYPE STRING,
ITEM_TOGG_RIGHT TYPE STRING,
ITEM_STYLE TYPE STRING,
ITEM_LENGTH TYPE STRING,
ITEM_LENGTH_PIX TYPE STRING,
ITEM_IGNOREIMAG TYPE STRING,
ITEM_USEBGCOLOR TYPE STRING,
ITEM_TEXT TYPE STRING,
HDR_NAME TYPE STRING,
HDR_END_COL TYPE STRING,
HDR_T_IMAGE TYPE STRING,
HDR_HEADING TYPE STRING,
HDR_WIDTH TYPE STRING,
HDR_WIDTH_PIX TYPE STRING,
HDR_TYPE TYPE STRING,
HDR_ALIGNMENT TYPE STRING,
NUMBEROFROW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMPOSCOL_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_SMPOSCOL_STR-COL_NAME sy-vline 
WA_SMPOSCOL_STR-COL_ALIGNMENT sy-vline 
WA_SMPOSCOL_STR-COL_WIDTH sy-vline 
WA_SMPOSCOL_STR-COL_WIDTH_CHAR sy-vline 
WA_SMPOSCOL_STR-COL_HIDDEN sy-vline 
WA_SMPOSCOL_STR-COL_SELECTABLE sy-vline 
WA_SMPOSCOL_STR-ITEM_NODE_KEY sy-vline 
WA_SMPOSCOL_STR-ITEM_ITEM_NAME sy-vline 
WA_SMPOSCOL_STR-ITEM_CLASS sy-vline 
WA_SMPOSCOL_STR-ITEM_FONT sy-vline 
WA_SMPOSCOL_STR-ITEM_DISABLED sy-vline 
WA_SMPOSCOL_STR-ITEM_EDITABLE sy-vline 
WA_SMPOSCOL_STR-ITEM_HIDDEN sy-vline 
WA_SMPOSCOL_STR-ITEM_ALIGNMENT sy-vline 
WA_SMPOSCOL_STR-ITEM_T_IMAGE sy-vline 
WA_SMPOSCOL_STR-ITEM_CHOSEN sy-vline 
WA_SMPOSCOL_STR-ITEM_TOGG_RIGHT sy-vline 
WA_SMPOSCOL_STR-ITEM_STYLE sy-vline 
WA_SMPOSCOL_STR-ITEM_LENGTH sy-vline 
WA_SMPOSCOL_STR-ITEM_LENGTH_PIX sy-vline 
WA_SMPOSCOL_STR-ITEM_IGNOREIMAG sy-vline 
WA_SMPOSCOL_STR-ITEM_USEBGCOLOR sy-vline 
WA_SMPOSCOL_STR-ITEM_TEXT sy-vline 
WA_SMPOSCOL_STR-HDR_NAME sy-vline 
WA_SMPOSCOL_STR-HDR_END_COL sy-vline 
WA_SMPOSCOL_STR-HDR_T_IMAGE sy-vline 
WA_SMPOSCOL_STR-HDR_HEADING sy-vline 
WA_SMPOSCOL_STR-HDR_WIDTH sy-vline 
WA_SMPOSCOL_STR-HDR_WIDTH_PIX sy-vline 
WA_SMPOSCOL_STR-HDR_TYPE sy-vline 
WA_SMPOSCOL_STR-HDR_ALIGNMENT sy-vline 
WA_SMPOSCOL_STR-NUMBEROFROW sy-vline      INTO ld_text SEPARATED BY SPACE.

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