ABAP Select data from SAP table QSMPL_LIST2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QSMPL_LIST2 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 QSMPL_LIST2. 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 QSMPL_LIST2 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_QSMPL_LIST2 TYPE STANDARD TABLE OF QSMPL_LIST2,
      WA_QSMPL_LIST2 TYPE QSMPL_LIST2,
      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: <QSMPL_LIST2> TYPE QSMPL_LIST2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QSMPL_LIST2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QSMPL_LIST2
  INTO TABLE IT_QSMPL_LIST2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QSMPL_LIST2
*  INTO TABLE @DATA(IT_QSMPL_LIST22).
*--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_QSMPL_LIST2 INDEX 1 INTO DATA(WA_QSMPL_LIST22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QSMPL_LIST2 ASSIGNING <QSMPL_LIST2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QSMPL_LIST2>-INSPLOT = 1.
<QSMPL_LIST2>-INSPOPER = 1.
<QSMPL_LIST2>-INSPOPER_INT = 1.
<QSMPL_LIST2>-INSPCHAR = 1.
<QSMPL_LIST2>-INSPSAMPLE = 1.

ENDLOOP.

LOOP AT IT_QSMPL_LIST2 INTO WA_QSMPL_LIST2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QSMPL_LIST2-RES_NO, sy-vline,
  WA_QSMPL_LIST2-I_INSPLOT, sy-vline,
  WA_QSMPL_LIST2-I_INSPOPER, sy-vline,
  WA_QSMPL_LIST2-I_HANDHELD, sy-vline,
  WA_QSMPL_LIST2-I_INSPPOINT, sy-vline,
  WA_QSMPL_LIST2-I_INSPPOINT_REQUIREMENTS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QSMPL_LIST2 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_QSMPL_LIST2 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_QSMPL_LIST2 INTO WA_QSMPL_LIST2.


*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 ALPHA, internal->external for field INSPLOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QSMPL_LIST2-INSPLOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSMPL_LIST2-INSPLOT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field INSPOPER
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QSMPL_LIST2-INSPOPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QSMPL_LIST2-INSPOPER.
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_QSMPL_LIST2_STR, 
INSPLOT TYPE STRING,
INSPOPER TYPE STRING,
INSPOPER_INT TYPE STRING,
INSPCHAR TYPE STRING,
INSPSAMPLE TYPE STRING,
RES_NO TYPE STRING,
I_INSPLOT TYPE STRING,
I_INSPOPER TYPE STRING,
I_HANDHELD TYPE STRING,
I_INSPPOINT TYPE STRING,
I_INSPPOINT_REQUIREMENTS TYPE STRING,
I_CHAR_REQUIREMENTS TYPE STRING,
I_CHAR_RESULTS TYPE STRING,
I_SAMPLE_RESULTS TYPE STRING,
I_SINGLE_RESULTS TYPE STRING,
I_CODE_FROM TYPE STRING,
I_CODE_TO TYPE STRING,
I_IP_CODE_FROM TYPE STRING,
I_IP_CODE_TO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QSMPL_LIST2_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_QSMPL_LIST2_STR-INSPLOT sy-vline 
WA_QSMPL_LIST2_STR-INSPOPER sy-vline 
WA_QSMPL_LIST2_STR-INSPOPER_INT sy-vline 
WA_QSMPL_LIST2_STR-INSPCHAR sy-vline 
WA_QSMPL_LIST2_STR-INSPSAMPLE sy-vline 
WA_QSMPL_LIST2_STR-RES_NO sy-vline 
WA_QSMPL_LIST2_STR-I_INSPLOT sy-vline 
WA_QSMPL_LIST2_STR-I_INSPOPER sy-vline 
WA_QSMPL_LIST2_STR-I_HANDHELD sy-vline 
WA_QSMPL_LIST2_STR-I_INSPPOINT sy-vline 
WA_QSMPL_LIST2_STR-I_INSPPOINT_REQUIREMENTS sy-vline 
WA_QSMPL_LIST2_STR-I_CHAR_REQUIREMENTS sy-vline 
WA_QSMPL_LIST2_STR-I_CHAR_RESULTS sy-vline 
WA_QSMPL_LIST2_STR-I_SAMPLE_RESULTS sy-vline 
WA_QSMPL_LIST2_STR-I_SINGLE_RESULTS sy-vline 
WA_QSMPL_LIST2_STR-I_CODE_FROM sy-vline 
WA_QSMPL_LIST2_STR-I_CODE_TO sy-vline 
WA_QSMPL_LIST2_STR-I_IP_CODE_FROM sy-vline 
WA_QSMPL_LIST2_STR-I_IP_CODE_TO sy-vline      INTO ld_text SEPARATED BY SPACE.

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