ABAP Select data from SAP table FCML_MLDOC_MST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCML_MLDOC_MST
*  INTO TABLE @DATA(IT_FCML_MLDOC_MST2).
*--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_FCML_MLDOC_MST INDEX 1 INTO DATA(WA_FCML_MLDOC_MST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCML_MLDOC_MST>-MANDT = 1.
<FCML_MLDOC_MST>-BELNR = 1.
<FCML_MLDOC_MST>-KJAHR = 1.
<FCML_MLDOC_MST>-POSNR = 1.
<FCML_MLDOC_MST>-BDATJ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCML_MLDOC_MST-POPER, sy-vline,
  WA_FCML_MLDOC_MST-CURTP, sy-vline,
  WA_FCML_MLDOC_MST-RUN_ID, sy-vline,
  WA_FCML_MLDOC_MST-RUN_TYPE, sy-vline,
  WA_FCML_MLDOC_MST-LAST_DAY, sy-vline,
  WA_FCML_MLDOC_MST-KALST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCML_MLDOC_MST 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_FCML_MLDOC_MST 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_FCML_MLDOC_MST INTO WA_FCML_MLDOC_MST.


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

*Conversion exit GJAHR, internal->external for field KJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-KJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-KJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-BDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-BDATJ.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field KJAHR_EA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-KJAHR_EA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-KJAHR_EA.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field KJAHR_MA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-KJAHR_MA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-KJAHR_MA.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FCML_MLDOC_MST-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FCML_MLDOC_MST-LIFNR.
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_FCML_MLDOC_MST_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
KJAHR TYPE STRING,
POSNR TYPE STRING,
BDATJ TYPE STRING,
POPER TYPE STRING,
CURTP TYPE STRING,
RUN_ID TYPE STRING,
RUN_TYPE TYPE STRING,
LAST_DAY TYPE STRING,
KALST TYPE STRING,
CYCLENR TYPE STRING,
VGART TYPE STRING,
AWTYP TYPE STRING,
AWREF TYPE STRING,
AWORG TYPE STRING,
AWSYS TYPE STRING,
STORNO TYPE STRING,
UMBEW TYPE STRING,
BLDAT TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
TCODE TYPE STRING,
GLVOR TYPE STRING,
LOGSYS TYPE STRING,
PVERS TYPE STRING,
URZEILE TYPE STRING,
MATNR TYPE STRING,
BWTAR TYPE STRING,
BWKEY TYPE STRING,
KALNR TYPE STRING,
MEINS TYPE STRING,
SPART TYPE STRING,
GSBER TYPE STRING,
BWMOD TYPE STRING,
BUKRS TYPE STRING,
KTOPL TYPE STRING,
MLAST TYPE STRING,
PSART TYPE STRING,
BELNR_EA TYPE STRING,
KJAHR_EA TYPE STRING,
BELNR_MA TYPE STRING,
KJAHR_MA TYPE STRING,
ASCHEMA TYPE STRING,
PTYP TYPE STRING,
PTYP_KAT TYPE STRING,
PTYP_BVALT TYPE STRING,
PTYP_PROC TYPE STRING,
BEWARTGRP TYPE STRING,
KATEGORIE TYPE STRING,
BVALT TYPE STRING,
PROCESS TYPE STRING,
CSPLIT TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
PSPNR TYPE STRING,
LIFNR TYPE STRING,
KZBWS TYPE STRING,
XOBEW TYPE STRING,
SOBKZ TYPE STRING,
XABRERR TYPE STRING,
BUDAT TYPE STRING,
PERART TYPE STRING,
LBKUM TYPE STRING,
LBKUM_OLD TYPE STRING,
UNTPER TYPE STRING,
BKLAS TYPE STRING,
XKONCHK TYPE STRING,
STATUS TYPE STRING,
MODIF TYPE STRING,
WAERS TYPE STRING,
SALK3 TYPE STRING,
SALK3_OLD TYPE STRING,
SALKV TYPE STRING,
SALKV_OLD TYPE STRING,
PEINH TYPE STRING,
PVPRS_OLD TYPE STRING,
STPRS_OLD TYPE STRING,
VPRSV_OLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCML_MLDOC_MST_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_FCML_MLDOC_MST_STR-MANDT sy-vline 
WA_FCML_MLDOC_MST_STR-BELNR sy-vline 
WA_FCML_MLDOC_MST_STR-KJAHR sy-vline 
WA_FCML_MLDOC_MST_STR-POSNR sy-vline 
WA_FCML_MLDOC_MST_STR-BDATJ sy-vline 
WA_FCML_MLDOC_MST_STR-POPER sy-vline 
WA_FCML_MLDOC_MST_STR-CURTP sy-vline 
WA_FCML_MLDOC_MST_STR-RUN_ID sy-vline 
WA_FCML_MLDOC_MST_STR-RUN_TYPE sy-vline 
WA_FCML_MLDOC_MST_STR-LAST_DAY sy-vline 
WA_FCML_MLDOC_MST_STR-KALST sy-vline 
WA_FCML_MLDOC_MST_STR-CYCLENR sy-vline 
WA_FCML_MLDOC_MST_STR-VGART sy-vline 
WA_FCML_MLDOC_MST_STR-AWTYP sy-vline 
WA_FCML_MLDOC_MST_STR-AWREF sy-vline 
WA_FCML_MLDOC_MST_STR-AWORG sy-vline 
WA_FCML_MLDOC_MST_STR-AWSYS sy-vline 
WA_FCML_MLDOC_MST_STR-STORNO sy-vline 
WA_FCML_MLDOC_MST_STR-UMBEW sy-vline 
WA_FCML_MLDOC_MST_STR-BLDAT sy-vline 
WA_FCML_MLDOC_MST_STR-CPUDT sy-vline 
WA_FCML_MLDOC_MST_STR-CPUTM sy-vline 
WA_FCML_MLDOC_MST_STR-USNAM sy-vline 
WA_FCML_MLDOC_MST_STR-TCODE sy-vline 
WA_FCML_MLDOC_MST_STR-GLVOR sy-vline 
WA_FCML_MLDOC_MST_STR-LOGSYS sy-vline 
WA_FCML_MLDOC_MST_STR-PVERS sy-vline 
WA_FCML_MLDOC_MST_STR-URZEILE sy-vline 
WA_FCML_MLDOC_MST_STR-MATNR sy-vline 
WA_FCML_MLDOC_MST_STR-BWTAR sy-vline 
WA_FCML_MLDOC_MST_STR-BWKEY sy-vline 
WA_FCML_MLDOC_MST_STR-KALNR sy-vline 
WA_FCML_MLDOC_MST_STR-MEINS sy-vline 
WA_FCML_MLDOC_MST_STR-SPART sy-vline 
WA_FCML_MLDOC_MST_STR-GSBER sy-vline 
WA_FCML_MLDOC_MST_STR-BWMOD sy-vline 
WA_FCML_MLDOC_MST_STR-BUKRS sy-vline 
WA_FCML_MLDOC_MST_STR-KTOPL sy-vline 
WA_FCML_MLDOC_MST_STR-MLAST sy-vline 
WA_FCML_MLDOC_MST_STR-PSART sy-vline 
WA_FCML_MLDOC_MST_STR-BELNR_EA sy-vline 
WA_FCML_MLDOC_MST_STR-KJAHR_EA sy-vline 
WA_FCML_MLDOC_MST_STR-BELNR_MA sy-vline 
WA_FCML_MLDOC_MST_STR-KJAHR_MA sy-vline 
WA_FCML_MLDOC_MST_STR-ASCHEMA sy-vline 
WA_FCML_MLDOC_MST_STR-PTYP sy-vline 
WA_FCML_MLDOC_MST_STR-PTYP_KAT sy-vline 
WA_FCML_MLDOC_MST_STR-PTYP_BVALT sy-vline 
WA_FCML_MLDOC_MST_STR-PTYP_PROC sy-vline 
WA_FCML_MLDOC_MST_STR-BEWARTGRP sy-vline 
WA_FCML_MLDOC_MST_STR-KATEGORIE sy-vline 
WA_FCML_MLDOC_MST_STR-BVALT sy-vline 
WA_FCML_MLDOC_MST_STR-PROCESS sy-vline 
WA_FCML_MLDOC_MST_STR-CSPLIT sy-vline 
WA_FCML_MLDOC_MST_STR-VBELN sy-vline 
WA_FCML_MLDOC_MST_STR-VBELP sy-vline 
WA_FCML_MLDOC_MST_STR-PSPNR sy-vline 
WA_FCML_MLDOC_MST_STR-LIFNR sy-vline 
WA_FCML_MLDOC_MST_STR-KZBWS sy-vline 
WA_FCML_MLDOC_MST_STR-XOBEW sy-vline 
WA_FCML_MLDOC_MST_STR-SOBKZ sy-vline 
WA_FCML_MLDOC_MST_STR-XABRERR sy-vline 
WA_FCML_MLDOC_MST_STR-BUDAT sy-vline 
WA_FCML_MLDOC_MST_STR-PERART sy-vline 
WA_FCML_MLDOC_MST_STR-LBKUM sy-vline 
WA_FCML_MLDOC_MST_STR-LBKUM_OLD sy-vline 
WA_FCML_MLDOC_MST_STR-UNTPER sy-vline 
WA_FCML_MLDOC_MST_STR-BKLAS sy-vline 
WA_FCML_MLDOC_MST_STR-XKONCHK sy-vline 
WA_FCML_MLDOC_MST_STR-STATUS sy-vline 
WA_FCML_MLDOC_MST_STR-MODIF sy-vline 
WA_FCML_MLDOC_MST_STR-WAERS sy-vline 
WA_FCML_MLDOC_MST_STR-SALK3 sy-vline 
WA_FCML_MLDOC_MST_STR-SALK3_OLD sy-vline 
WA_FCML_MLDOC_MST_STR-SALKV sy-vline 
WA_FCML_MLDOC_MST_STR-SALKV_OLD sy-vline 
WA_FCML_MLDOC_MST_STR-PEINH sy-vline 
WA_FCML_MLDOC_MST_STR-PVPRS_OLD sy-vline 
WA_FCML_MLDOC_MST_STR-STPRS_OLD sy-vline 
WA_FCML_MLDOC_MST_STR-VPRSV_OLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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