ABAP Select data from SAP table QGEVAL_TS_SINGLE_VALUE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QGEVAL_TS_SINGLE_VALUE
*  INTO TABLE @DATA(IT_QGEVAL_TS_SINGLE_VALUE2).
*--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_QGEVAL_TS_SINGLE_VALUE INDEX 1 INTO DATA(WA_QGEVAL_TS_SINGLE_VALUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QGEVAL_TS_SINGLE_VALUE>-PRUEFLOS = 1.
<QGEVAL_TS_SINGLE_VALUE>-TEILLOS = 1.
<QGEVAL_TS_SINGLE_VALUE>-VORGLFNR = 1.
<QGEVAL_TS_SINGLE_VALUE>-PROBENR = 1.
<QGEVAL_TS_SINGLE_VALUE>-MERKNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QGEVAL_TS_SINGLE_VALUE-STUECKNR, sy-vline,
  WA_QGEVAL_TS_SINGLE_VALUE-VORNR, sy-vline,
  WA_QGEVAL_TS_SINGLE_VALUE-ATTRIBUT, sy-vline,
  WA_QGEVAL_TS_SINGLE_VALUE-ERSTELLDAT, sy-vline,
  WA_QGEVAL_TS_SINGLE_VALUE-AENDERDAT, sy-vline,
  WA_QGEVAL_TS_SINGLE_VALUE-PRUEFDATUV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QGEVAL_TS_SINGLE_VALUE 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_QGEVAL_TS_SINGLE_VALUE 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_QGEVAL_TS_SINGLE_VALUE INTO WA_QGEVAL_TS_SINGLE_VALUE.


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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QGEVAL_TS_SINGLE_VALUE-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QGEVAL_TS_SINGLE_VALUE-VORNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MASSEINHSW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QGEVAL_TS_SINGLE_VALUE-MASSEINHSW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QGEVAL_TS_SINGLE_VALUE-MASSEINHSW.
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_QGEVAL_TS_SINGLE_VALUE_STR, 
PRUEFLOS TYPE STRING,
TEILLOS TYPE STRING,
VORGLFNR TYPE STRING,
PROBENR TYPE STRING,
MERKNR TYPE STRING,
STUECKNR TYPE STRING,
VORNR TYPE STRING,
ATTRIBUT TYPE STRING,
ERSTELLDAT TYPE STRING,
AENDERDAT TYPE STRING,
PRUEFDATUV TYPE STRING,
PRUEFZEITV TYPE STRING,
PRUEFBEMKT TYPE STRING,
MESSWERT TYPE STRING,
KATALGART1 TYPE STRING,
AUSWMENGE1 TYPE STRING,
AUSWMGWRK1 TYPE STRING,
GRUPPE1 TYPE STRING,
CODE1 TYPE STRING,
ANZFEHLER TYPE STRING,
FEHLKLAS TYPE STRING,
MBEWERTG TYPE STRING,
SERIALNR TYPE STRING,
MASCHINE TYPE STRING,
STELLEN TYPE STRING,
MASSEINHSW TYPE STRING,
MESSWERT_C TYPE STRING,
CODE1_C TYPE STRING,
MASSEINH6 TYPE STRING,
TSTICHPRKZ TYPE STRING,
BATCH_HIERARCHY TYPE STRING,
CHARG TYPE STRING,
ZEITERSTL TYPE STRING,
ZEITAEND TYPE STRING,
LIMITS_VIOLATED TYPE STRING,
ULIMIT_VIOLATED TYPE STRING,
LLIMIT_VIOLATED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QGEVAL_TS_SINGLE_VALUE_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_QGEVAL_TS_SINGLE_VALUE_STR-PRUEFLOS sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-TEILLOS sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-VORGLFNR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-PROBENR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MERKNR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-STUECKNR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-VORNR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ATTRIBUT sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ERSTELLDAT sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-AENDERDAT sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-PRUEFDATUV sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-PRUEFZEITV sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-PRUEFBEMKT sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MESSWERT sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-KATALGART1 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-AUSWMENGE1 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-AUSWMGWRK1 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-GRUPPE1 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-CODE1 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ANZFEHLER sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-FEHLKLAS sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MBEWERTG sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-SERIALNR sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MASCHINE sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-STELLEN sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MASSEINHSW sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MESSWERT_C sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-CODE1_C sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-MASSEINH6 sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-TSTICHPRKZ sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-BATCH_HIERARCHY sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-CHARG sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ZEITERSTL sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ZEITAEND sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-LIMITS_VIOLATED sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-ULIMIT_VIOLATED sy-vline 
WA_QGEVAL_TS_SINGLE_VALUE_STR-LLIMIT_VIOLATED sy-vline      INTO ld_text SEPARATED BY SPACE.

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