ABAP Select data from SAP table QMSMCAT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QMSMCAT 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 QMSMCAT. 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 QMSMCAT 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_QMSMCAT TYPE STANDARD TABLE OF QMSMCAT,
      WA_QMSMCAT TYPE QMSMCAT,
      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: <QMSMCAT> TYPE QMSMCAT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QMSMCAT
*  INTO TABLE @DATA(IT_QMSMCAT2).
*--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_QMSMCAT INDEX 1 INTO DATA(WA_QMSMCAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QMSMCAT>-MANDT = 1.
<QMSMCAT>-QMNUM = 1.
<QMSMCAT>-MANUM = 1.
<QMSMCAT>-MNKAT = 1.
<QMSMCAT>-MNGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QMSMCAT-MNCOD, sy-vline,
  WA_QMSMCAT-MNVER, sy-vline,
  WA_QMSMCAT-FOLGEACT, sy-vline,
  WA_QMSMCAT-FOLACTPROT, sy-vline,
  WA_QMSMCAT-MATXT, sy-vline,
  WA_QMSMCAT-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QMSMCAT 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_QMSMCAT 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_QMSMCAT INTO WA_QMSMCAT.


*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_QMSMCAT-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-QMNUM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PARVW, internal->external for field PARVW
CALL FUNCTION 'CONVERSION_EXIT_PARVW_OUTPUT'
  EXPORTING
    input =                      WA_QMSMCAT-PARVW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-PARVW.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MMGEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QMSMCAT-MMGEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-MMGEIN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TMPLA, internal->external for field TSEGTP
CALL FUNCTION 'CONVERSION_EXIT_TMPLA_OUTPUT'
  EXPORTING
    input =                      WA_QMSMCAT-TSEGTP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-TSEGTP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TIMEBASEDEFFORTUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_QMSMCAT-TIMEBASEDEFFORTUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-TIMEBASEDEFFORTUOM.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PRBOBSOLVPROCCAUSE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMSMCAT-PRBOBSOLVPROCCAUSE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMSMCAT-PRBOBSOLVPROCCAUSE.
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_QMSMCAT_STR, 
MANDT TYPE STRING,
QMNUM TYPE STRING,
MANUM TYPE STRING,
MNKAT TYPE STRING,
MNGRP TYPE STRING,
MNCOD TYPE STRING,
MNVER TYPE STRING,
FOLGEACT TYPE STRING,
FOLACTPROT TYPE STRING,
MATXT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
PSTER TYPE STRING,
PETER TYPE STRING,
OBJNR TYPE STRING,
INDTX TYPE STRING,
KZMLA TYPE STRING,
PSTUR TYPE STRING,
PETUR TYPE STRING,
ERLNAM TYPE STRING,
ERLDAT TYPE STRING,
ERLZEIT TYPE STRING,
WDVDAT TYPE STRING,
FENUM TYPE STRING,
URNUM TYPE STRING,
ERZEIT TYPE STRING,
AEZEIT TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
MMENGE TYPE STRING,
MMGEIN TYPE STRING,
BAUTL TYPE STRING,
KZLOESCH TYPE STRING,
QSMNUM TYPE STRING,
AUTKZ TYPE STRING,
HANDLE TYPE STRING,
TSEGFL TYPE STRING,
TSEGTP TYPE STRING,
TZONSO TYPE STRING,
TZONSM TYPE STRING,
TZONID TYPE STRING,
TIMEBASEDEFFORT TYPE STRING,
TIMEBASEDEFFORTUOM TYPE STRING,
DUMMY_QMSM_INCL_EEW_PS TYPE STRING,
KZACTIONBOX TYPE STRING,
FUNKTION TYPE STRING,
/SAPSMOSS/NOTE TYPE STRING,
/SAPSMOSS/REPORT TYPE STRING,
/SAPSMOSS/MTSTMP TYPE STRING,
ABC_TEMPL TYPE STRING,
TASKTYPE TYPE STRING,
DEFECTINTERNALID TYPE STRING,
PRDCSSRQTASKINTERNALID TYPE STRING,
TASKORIGIN TYPE STRING,
PROCESSOR TYPE STRING,
CHANGEDDATETIME TYPE STRING,
STATLCYCLE TYPE STRING,
STATACYCLE TYPE STRING,
STATFOA TYPE STRING,
WDVZEIT TYPE STRING,
PROBSOLVINGPROCESS TYPE STRING,
PROBSOLVINGPROCESSSTEP TYPE STRING,
PRBOBSOLVPROCCAUSE TYPE STRING,
TASKISCONTROLLEDBYORIGIN TYPE STRING,
EFFECTPERC TYPE STRING,
EFFECTTEXT TYPE STRING,
KTXTCD TYPE STRING,
KTXTGR TYPE STRING,
QSMSTTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QMSMCAT_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_QMSMCAT_STR-MANDT sy-vline 
WA_QMSMCAT_STR-QMNUM sy-vline 
WA_QMSMCAT_STR-MANUM sy-vline 
WA_QMSMCAT_STR-MNKAT sy-vline 
WA_QMSMCAT_STR-MNGRP sy-vline 
WA_QMSMCAT_STR-MNCOD sy-vline 
WA_QMSMCAT_STR-MNVER sy-vline 
WA_QMSMCAT_STR-FOLGEACT sy-vline 
WA_QMSMCAT_STR-FOLACTPROT sy-vline 
WA_QMSMCAT_STR-MATXT sy-vline 
WA_QMSMCAT_STR-ERNAM sy-vline 
WA_QMSMCAT_STR-ERDAT sy-vline 
WA_QMSMCAT_STR-AENAM sy-vline 
WA_QMSMCAT_STR-AEDAT sy-vline 
WA_QMSMCAT_STR-PSTER sy-vline 
WA_QMSMCAT_STR-PETER sy-vline 
WA_QMSMCAT_STR-OBJNR sy-vline 
WA_QMSMCAT_STR-INDTX sy-vline 
WA_QMSMCAT_STR-KZMLA sy-vline 
WA_QMSMCAT_STR-PSTUR sy-vline 
WA_QMSMCAT_STR-PETUR sy-vline 
WA_QMSMCAT_STR-ERLNAM sy-vline 
WA_QMSMCAT_STR-ERLDAT sy-vline 
WA_QMSMCAT_STR-ERLZEIT sy-vline 
WA_QMSMCAT_STR-WDVDAT sy-vline 
WA_QMSMCAT_STR-FENUM sy-vline 
WA_QMSMCAT_STR-URNUM sy-vline 
WA_QMSMCAT_STR-ERZEIT sy-vline 
WA_QMSMCAT_STR-AEZEIT sy-vline 
WA_QMSMCAT_STR-PARVW sy-vline 
WA_QMSMCAT_STR-PARNR sy-vline 
WA_QMSMCAT_STR-MMENGE sy-vline 
WA_QMSMCAT_STR-MMGEIN sy-vline 
WA_QMSMCAT_STR-BAUTL sy-vline 
WA_QMSMCAT_STR-KZLOESCH sy-vline 
WA_QMSMCAT_STR-QSMNUM sy-vline 
WA_QMSMCAT_STR-AUTKZ sy-vline 
WA_QMSMCAT_STR-HANDLE sy-vline 
WA_QMSMCAT_STR-TSEGFL sy-vline 
WA_QMSMCAT_STR-TSEGTP sy-vline 
WA_QMSMCAT_STR-TZONSO sy-vline 
WA_QMSMCAT_STR-TZONSM sy-vline 
WA_QMSMCAT_STR-TZONID sy-vline 
WA_QMSMCAT_STR-TIMEBASEDEFFORT sy-vline 
WA_QMSMCAT_STR-TIMEBASEDEFFORTUOM sy-vline 
WA_QMSMCAT_STR-DUMMY_QMSM_INCL_EEW_PS sy-vline 
WA_QMSMCAT_STR-KZACTIONBOX sy-vline 
WA_QMSMCAT_STR-FUNKTION sy-vline 
WA_QMSMCAT_STR-/SAPSMOSS/NOTE sy-vline 
WA_QMSMCAT_STR-/SAPSMOSS/REPORT sy-vline 
WA_QMSMCAT_STR-/SAPSMOSS/MTSTMP sy-vline 
WA_QMSMCAT_STR-ABC_TEMPL sy-vline 
WA_QMSMCAT_STR-TASKTYPE sy-vline 
WA_QMSMCAT_STR-DEFECTINTERNALID sy-vline 
WA_QMSMCAT_STR-PRDCSSRQTASKINTERNALID sy-vline 
WA_QMSMCAT_STR-TASKORIGIN sy-vline 
WA_QMSMCAT_STR-PROCESSOR sy-vline 
WA_QMSMCAT_STR-CHANGEDDATETIME sy-vline 
WA_QMSMCAT_STR-STATLCYCLE sy-vline 
WA_QMSMCAT_STR-STATACYCLE sy-vline 
WA_QMSMCAT_STR-STATFOA sy-vline 
WA_QMSMCAT_STR-WDVZEIT sy-vline 
WA_QMSMCAT_STR-PROBSOLVINGPROCESS sy-vline 
WA_QMSMCAT_STR-PROBSOLVINGPROCESSSTEP sy-vline 
WA_QMSMCAT_STR-PRBOBSOLVPROCCAUSE sy-vline 
WA_QMSMCAT_STR-TASKISCONTROLLEDBYORIGIN sy-vline 
WA_QMSMCAT_STR-EFFECTPERC sy-vline 
WA_QMSMCAT_STR-EFFECTTEXT sy-vline 
WA_QMSMCAT_STR-KTXTCD sy-vline 
WA_QMSMCAT_STR-KTXTGR sy-vline 
WA_QMSMCAT_STR-QSMSTTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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