ABAP Select data from SAP table MCJKPAZ 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 MCJKPAZ 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 MCJKPAZ. 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 MCJKPAZ 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_MCJKPAZ TYPE STANDARD TABLE OF MCJKPAZ,
      WA_MCJKPAZ TYPE MCJKPAZ,
      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: <MCJKPAZ> TYPE MCJKPAZ.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCJKPAZ
*  INTO TABLE @DATA(IT_MCJKPAZ2).
*--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_MCJKPAZ INDEX 1 INTO DATA(WA_MCJKPAZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCJKPAZ>-MANDT = 1.
<MCJKPAZ>-VBELN = 1.
<MCJKPAZ>-POSNR = 1.
<MCJKPAZ>-ETENR = 1.
<MCJKPAZ>-JPARVW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCJKPAZ-PARZA, sy-vline,
  WA_MCJKPAZ-GUELTIGVON, sy-vline,
  WA_MCJKPAZ-GUELTIGBIS, sy-vline,
  WA_MCJKPAZ-GPNR, sy-vline,
  WA_MCJKPAZ-VERSERVGES, sy-vline,
  WA_MCJKPAZ-PERNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCJKPAZ 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_MCJKPAZ 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_MCJKPAZ INTO WA_MCJKPAZ.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field GEOEIN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCJKPAZ-GEOEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCJKPAZ-GEOEIN.
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_MCJKPAZ_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
JPARVW TYPE STRING,
PARZA TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
GPNR TYPE STRING,
VERSERVGES TYPE STRING,
PERNR TYPE STRING,
PARNR TYPE STRING,
ADRNR TYPE STRING,
ADRESSVAR TYPE STRING,
HERK TYPE STRING,
PLZ_ORDER TYPE STRING,
XCPDK TYPE STRING,
BEABLST TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
BKONT TYPE STRING,
BVTYP TYPE STRING,
XEZER TYPE STRING,
ZLSCH TYPE STRING,
KREISG_SCH TYPE STRING,
BEZIRK TYPE STRING,
GEOEIN TYPE STRING,
LIEFERART TYPE STRING,
LIEFBARNR TYPE STRING,
POSNR_UR TYPE STRING,
ETENR_UR TYPE STRING,
POART TYPE STRING,
ETART TYPE STRING,
BEZPER TYPE STRING,
JXFZUOKGS TYPE STRING,
JXLZUOKGS TYPE STRING,
JXFZUOPLZ TYPE STRING,
JXLZUOPLZ TYPE STRING,
JXFZUOBEZ TYPE STRING,
JXLZUOBEZ TYPE STRING,
DUMMYUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCJKPAZ_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_MCJKPAZ_STR-MANDT sy-vline 
WA_MCJKPAZ_STR-VBELN sy-vline 
WA_MCJKPAZ_STR-POSNR sy-vline 
WA_MCJKPAZ_STR-ETENR sy-vline 
WA_MCJKPAZ_STR-JPARVW sy-vline 
WA_MCJKPAZ_STR-PARZA sy-vline 
WA_MCJKPAZ_STR-GUELTIGVON sy-vline 
WA_MCJKPAZ_STR-GUELTIGBIS sy-vline 
WA_MCJKPAZ_STR-GPNR sy-vline 
WA_MCJKPAZ_STR-VERSERVGES sy-vline 
WA_MCJKPAZ_STR-PERNR sy-vline 
WA_MCJKPAZ_STR-PARNR sy-vline 
WA_MCJKPAZ_STR-ADRNR sy-vline 
WA_MCJKPAZ_STR-ADRESSVAR sy-vline 
WA_MCJKPAZ_STR-HERK sy-vline 
WA_MCJKPAZ_STR-PLZ_ORDER sy-vline 
WA_MCJKPAZ_STR-XCPDK sy-vline 
WA_MCJKPAZ_STR-BEABLST sy-vline 
WA_MCJKPAZ_STR-BANKS sy-vline 
WA_MCJKPAZ_STR-BANKL sy-vline 
WA_MCJKPAZ_STR-BANKN sy-vline 
WA_MCJKPAZ_STR-BKONT sy-vline 
WA_MCJKPAZ_STR-BVTYP sy-vline 
WA_MCJKPAZ_STR-XEZER sy-vline 
WA_MCJKPAZ_STR-ZLSCH sy-vline 
WA_MCJKPAZ_STR-KREISG_SCH sy-vline 
WA_MCJKPAZ_STR-BEZIRK sy-vline 
WA_MCJKPAZ_STR-GEOEIN sy-vline 
WA_MCJKPAZ_STR-LIEFERART sy-vline 
WA_MCJKPAZ_STR-LIEFBARNR sy-vline 
WA_MCJKPAZ_STR-POSNR_UR sy-vline 
WA_MCJKPAZ_STR-ETENR_UR sy-vline 
WA_MCJKPAZ_STR-POART sy-vline 
WA_MCJKPAZ_STR-ETART sy-vline 
WA_MCJKPAZ_STR-BEZPER sy-vline 
WA_MCJKPAZ_STR-JXFZUOKGS sy-vline 
WA_MCJKPAZ_STR-JXLZUOKGS sy-vline 
WA_MCJKPAZ_STR-JXFZUOPLZ sy-vline 
WA_MCJKPAZ_STR-JXLZUOPLZ sy-vline 
WA_MCJKPAZ_STR-JXFZUOBEZ sy-vline 
WA_MCJKPAZ_STR-JXLZUOBEZ sy-vline 
WA_MCJKPAZ_STR-DUMMYUSR sy-vline      INTO ld_text SEPARATED BY SPACE.

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