ABAP Select data from SAP table JITO_DIA_ALL_MSSG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITO_DIA_ALL_MSSG
*  INTO TABLE @DATA(IT_JITO_DIA_ALL_MSSG2).
*--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_JITO_DIA_ALL_MSSG INDEX 1 INTO DATA(WA_JITO_DIA_ALL_MSSG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITO_DIA_ALL_MSSG>-MANDT = 1.
<JITO_DIA_ALL_MSSG>-CALRT = 1.
<JITO_DIA_ALL_MSSG>-MSGID = 1.
<JITO_DIA_ALL_MSSG>-MSGTY = 1.
<JITO_DIA_ALL_MSSG>-MSGNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITO_DIA_ALL_MSSG-MSGV1, sy-vline,
  WA_JITO_DIA_ALL_MSSG-MSGV2, sy-vline,
  WA_JITO_DIA_ALL_MSSG-MSGV3, sy-vline,
  WA_JITO_DIA_ALL_MSSG-MSGV4, sy-vline,
  WA_JITO_DIA_ALL_MSSG-TEXT, sy-vline,
  WA_JITO_DIA_ALL_MSSG-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITO_DIA_ALL_MSSG 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_JITO_DIA_ALL_MSSG 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_JITO_DIA_ALL_MSSG INTO WA_JITO_DIA_ALL_MSSG.


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

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

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

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

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_JITO_DIA_ALL_MSSG-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITO_DIA_ALL_MSSG-MJAHR.
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_JITO_DIA_ALL_MSSG_STR, 
MANDT TYPE STRING,
CALRT TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
TEXT TYPE STRING,
WERKS TYPE STRING,
PKNUM TYPE STRING,
PRVBE TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
OUTID TYPE STRING,
OUTPO TYPE STRING,
JCPOS TYPE STRING,
QUANT TYPE STRING,
MEINS TYPE STRING,
GRDON TYPE STRING,
TEXCO TYPE STRING,
LGORT TYPE STRING,
UNLPT TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
PABPRF TYPE STRING,
PABART TYPE STRING,
PABPAR TYPE STRING,
PABZUS TYPE STRING,
RKSTA TYPE STRING,
POSID TYPE STRING,
CNTRL TYPE STRING,
GRPIN TYPE STRING,
GRIND TYPE STRING,
IDNLF TYPE STRING,
ANLIE TYPE STRING,
LIUMF TYPE STRING,
INTST TYPE STRING,
INDAT TYPE STRING,
RDATE TYPE STRING,
JCTYP TYPE STRING,
CREAT TYPE STRING,
EXTST_INB TYPE STRING,
PACKV TYPE STRING,
PIID TYPE STRING,
ANZLT TYPE STRING,
PABNPL TYPE STRING,
GRQUA TYPE STRING,
SUMRST2 TYPE STRING,
SUMRST3 TYPE STRING,
SEQRST2 TYPE STRING,
CHARG TYPE STRING,
JITWEM TYPE STRING,
PABMSD TYPE STRING,
CUOBJ TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
NOTKZ TYPE STRING,
PKUMW TYPE STRING,
JITCOGRS TYPE STRING,
JITCORS TYPE STRING,
CRDAT TYPE STRING,
TEXIT TYPE STRING,
ABLAD TYPE STRING,
JOSUP TYPE STRING,
IDOCS TYPE STRING,
MECRE TYPE STRING,
AVISR TYPE STRING,
DELIV TYPE STRING,
DLCNS TYPE STRING,
GRPOS TYPE STRING,
ARCHI TYPE STRING,
JINUM TYPE STRING,
IDATUM TYPE STRING,
IZEIT TYPE STRING,
RDATUM TYPE STRING,
RZEIT TYPE STRING,
CDATUM TYPE STRING,
CZEIT TYPE STRING,
DOLOG TYPE STRING,
UPDKZ TYPE STRING,
LFSNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITO_DIA_ALL_MSSG_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_JITO_DIA_ALL_MSSG_STR-MANDT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CALRT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGID sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGTY sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGNO sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGV1 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGV2 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGV3 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MSGV4 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-TEXT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-WERKS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PKNUM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PRVBE sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MATNR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MAKTX sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-OUTID sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-OUTPO sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JCPOS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-QUANT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MEINS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-GRDON sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-TEXCO sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-LGORT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-UNLPT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-LIFNR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-EKORG sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-EBELN sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-EBELP sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABPRF sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABART sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABPAR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABZUS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-RKSTA sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-POSID sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CNTRL sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-GRPIN sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-GRIND sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-IDNLF sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-ANLIE sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-LIUMF sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-INTST sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-INDAT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-RDATE sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JCTYP sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CREAT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-EXTST_INB sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PACKV sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PIID sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-ANZLT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABNPL sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-GRQUA sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-SUMRST2 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-SUMRST3 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-SEQRST2 sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CHARG sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JITWEM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PABMSD sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CUOBJ sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MBLNR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MJAHR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-NOTKZ sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-PKUMW sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JITCOGRS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JITCORS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CRDAT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-TEXIT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-ABLAD sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JOSUP sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-IDOCS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-MECRE sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-AVISR sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-DELIV sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-DLCNS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-GRPOS sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-ARCHI sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-JINUM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-IDATUM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-IZEIT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-RDATUM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-RZEIT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CDATUM sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-CZEIT sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-DOLOG sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-UPDKZ sy-vline 
WA_JITO_DIA_ALL_MSSG_STR-LFSNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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