ABAP Select data from SAP table V_OLR3_QMEL 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 V_OLR3_QMEL 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 V_OLR3_QMEL. 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 V_OLR3_QMEL 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_V_OLR3_QMEL TYPE STANDARD TABLE OF V_OLR3_QMEL,
      WA_V_OLR3_QMEL TYPE V_OLR3_QMEL,
      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: <V_OLR3_QMEL> TYPE V_OLR3_QMEL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_OLR3_QMEL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_OLR3_QMEL
  INTO TABLE IT_V_OLR3_QMEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_OLR3_QMEL
*  INTO TABLE @DATA(IT_V_OLR3_QMEL2).
*--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_V_OLR3_QMEL INDEX 1 INTO DATA(WA_V_OLR3_QMEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_OLR3_QMEL ASSIGNING <V_OLR3_QMEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_OLR3_QMEL>-MANDT = 1.
<V_OLR3_QMEL>-QMNUM = 1.
<V_OLR3_QMEL>-QMART = 1.
<V_OLR3_QMEL>-QMTXT = 1.
<V_OLR3_QMEL>-ERNAM = 1.

ENDLOOP.

LOOP AT IT_V_OLR3_QMEL INTO WA_V_OLR3_QMEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_OLR3_QMEL-MATNR, sy-vline,
  WA_V_OLR3_QMEL-KUNUM, sy-vline,
  WA_V_OLR3_QMEL-LIFNUM, sy-vline,
  WA_V_OLR3_QMEL-MAWERK, sy-vline,
  WA_V_OLR3_QMEL-PRUEFLOS, sy-vline,
  WA_V_OLR3_QMEL-REFNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_OLR3_QMEL 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_V_OLR3_QMEL 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_V_OLR3_QMEL INTO WA_V_OLR3_QMEL.


*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 QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_QMEL-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_QMEL-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_QMEL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_QMEL-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_QMEL-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_QMEL-KUNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_QMEL-LIFNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_QMEL-LIFNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_OLR3_QMEL-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_OLR3_QMEL-PRUEFLOS.
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_V_OLR3_QMEL_STR, 
MANDT TYPE STRING,
QMNUM TYPE STRING,
QMART TYPE STRING,
QMTXT TYPE STRING,
ERNAM TYPE STRING,
MATNR TYPE STRING,
KUNUM TYPE STRING,
LIFNUM TYPE STRING,
MAWERK TYPE STRING,
PRUEFLOS TYPE STRING,
REFNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_OLR3_QMEL_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_V_OLR3_QMEL_STR-MANDT sy-vline 
WA_V_OLR3_QMEL_STR-QMNUM sy-vline 
WA_V_OLR3_QMEL_STR-QMART sy-vline 
WA_V_OLR3_QMEL_STR-QMTXT sy-vline 
WA_V_OLR3_QMEL_STR-ERNAM sy-vline 
WA_V_OLR3_QMEL_STR-MATNR sy-vline 
WA_V_OLR3_QMEL_STR-KUNUM sy-vline 
WA_V_OLR3_QMEL_STR-LIFNUM sy-vline 
WA_V_OLR3_QMEL_STR-MAWERK sy-vline 
WA_V_OLR3_QMEL_STR-PRUEFLOS sy-vline 
WA_V_OLR3_QMEL_STR-REFNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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