ABAP Select data from SAP table LATQ_DISP_QTY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LATQ_DISP_QTY
*  INTO TABLE @DATA(IT_LATQ_DISP_QTY2).
*--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_LATQ_DISP_QTY INDEX 1 INTO DATA(WA_LATQ_DISP_QTY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LATQ_DISP_QTY>-POSGUID = 1.
<LATQ_DISP_QTY>-KOSCH = 1.
<LATQ_DISP_QTY>-KONZA = 1.
<LATQ_DISP_QTY>-SPBUP = 1.
<LATQ_DISP_QTY>-BEGDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LATQ_DISP_QTY-ENDDAT, sy-vline,
  WA_LATQ_DISP_QTY-KCQTY, sy-vline,
  WA_LATQ_DISP_QTY-AEMENGE, sy-vline,
  WA_LATQ_DISP_QTY-AEMNG2, sy-vline,
  WA_LATQ_DISP_QTY-KLTBK, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_LATQ_DISP_QTY 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_LATQ_DISP_QTY 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_LATQ_DISP_QTY INTO WA_LATQ_DISP_QTY.


*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 PERI, internal->external for field SPBUP
CALL FUNCTION 'CONVERSION_EXIT_PERI_OUTPUT'
  EXPORTING
    input =                      WA_LATQ_DISP_QTY-SPBUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LATQ_DISP_QTY-SPBUP.
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_LATQ_DISP_QTY_STR, 
POSGUID TYPE STRING,
KOSCH TYPE STRING,
KONZA TYPE STRING,
SPBUP TYPE STRING,
BEGDAT TYPE STRING,
ENDDAT TYPE STRING,
KCQTY TYPE STRING,
AEMENGE TYPE STRING,
AEMNG2 TYPE STRING,
KLTBK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LATQ_DISP_QTY_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_LATQ_DISP_QTY_STR-POSGUID sy-vline 
WA_LATQ_DISP_QTY_STR-KOSCH sy-vline 
WA_LATQ_DISP_QTY_STR-KONZA sy-vline 
WA_LATQ_DISP_QTY_STR-SPBUP sy-vline 
WA_LATQ_DISP_QTY_STR-BEGDAT sy-vline 
WA_LATQ_DISP_QTY_STR-ENDDAT sy-vline 
WA_LATQ_DISP_QTY_STR-KCQTY sy-vline 
WA_LATQ_DISP_QTY_STR-AEMENGE sy-vline 
WA_LATQ_DISP_QTY_STR-AEMNG2 sy-vline 
WA_LATQ_DISP_QTY_STR-KLTBK sy-vline      INTO ld_text SEPARATED BY SPACE.

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