ABAP Select data from SAP table MCJKEP 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 MCJKEP 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 MCJKEP. 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 MCJKEP 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_MCJKEP TYPE STANDARD TABLE OF MCJKEP,
      WA_MCJKEP TYPE MCJKEP,
      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: <MCJKEP> TYPE MCJKEP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCJKEP
*  INTO TABLE @DATA(IT_MCJKEP2).
*--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_MCJKEP INDEX 1 INTO DATA(WA_MCJKEP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCJKEP-GUELTIGBIS, sy-vline,
  WA_MCJKEP-ETEEX, sy-vline,
  WA_MCJKEP-BEZPER, sy-vline,
  WA_MCJKEP-ETART, sy-vline,
  WA_MCJKEP-ZSKLS, sy-vline,
  WA_MCJKEP-AEART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCJKEP 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_MCJKEP 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_MCJKEP INTO WA_MCJKEP.


*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_MCJKEP-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCJKEP-VBELN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field NRIMJAHR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCJKEP-NRIMJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCJKEP-NRIMJAHR.
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_MCJKEP_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
ETEEX TYPE STRING,
BEZPER TYPE STRING,
ETART TYPE STRING,
ZSKLS TYPE STRING,
AEART TYPE STRING,
XUREINT TYPE STRING,
XTAGESBEZ TYPE STRING,
ETENR_UR TYPE STRING,
ETENR_VG TYPE STRING,
ETMENGE TYPE STRING,
ETMEINS TYPE STRING,
UNTMENGE TYPE STRING,
RKMENGE TYPE STRING,
NLMENGE TYPE STRING,
ETVORZEI TYPE STRING,
REMMG_PLAN TYPE STRING,
REMME_PLAN TYPE STRING,
KPOSN TYPE STRING,
NETWR TYPE STRING,
MWSBP TYPE STRING,
NETPR TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
SKTOF TYPE STRING,
PRSOK TYPE STRING,
PRSBINDDAT TYPE STRING,
PRSDT TYPE STRING,
PRSPER TYPE STRING,
BZPERF TYPE STRING,
PRSMLT TYPE STRING,
PRSDIV TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
XSTORNO TYPE STRING,
ANZET TYPE STRING,
VAUSGB TYPE STRING,
ERFUSER TYPE STRING,
ERFDATE TYPE STRING,
ERFTIME TYPE STRING,
AENUSER TYPE STRING,
AENDATE TYPE STRING,
AENTIME TYPE STRING,
LFARTLOG TYPE STRING,
XAMOCREDIT TYPE STRING,
XAMO_ARCHIVED TYPE STRING,
GPNRAG TYPE STRING,
GPNRWE TYPE STRING,
GPNRRE TYPE STRING,
GPNRRG TYPE STRING,
GPNRVM TYPE STRING,
PLZWE TYPE STRING,
PLZRE TYPE STRING,
KGSWE TYPE STRING,
LIEFBEZIRK TYPE STRING,
LIEFGEOEIN TYPE STRING,
LIEF_LAND TYPE STRING,
ERSCHDAT TYPE STRING,
JAHRGANG TYPE STRING,
NRIMJAHR TYPE STRING,
HEFTNUMMER TYPE STRING,
ETMNGNF TYPE STRING,
ETMNGVG TYPE STRING,
ETMENGE2 TYPE STRING,
ETMNGNF2 TYPE STRING,
ETMNGVG2 TYPE STRING,
DUMMYUSR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCJKEP_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_MCJKEP_STR-MANDT sy-vline 
WA_MCJKEP_STR-VBELN sy-vline 
WA_MCJKEP_STR-POSNR sy-vline 
WA_MCJKEP_STR-ETENR sy-vline 
WA_MCJKEP_STR-GUELTIGVON sy-vline 
WA_MCJKEP_STR-GUELTIGBIS sy-vline 
WA_MCJKEP_STR-ETEEX sy-vline 
WA_MCJKEP_STR-BEZPER sy-vline 
WA_MCJKEP_STR-ETART sy-vline 
WA_MCJKEP_STR-ZSKLS sy-vline 
WA_MCJKEP_STR-AEART sy-vline 
WA_MCJKEP_STR-XUREINT sy-vline 
WA_MCJKEP_STR-XTAGESBEZ sy-vline 
WA_MCJKEP_STR-ETENR_UR sy-vline 
WA_MCJKEP_STR-ETENR_VG sy-vline 
WA_MCJKEP_STR-ETMENGE sy-vline 
WA_MCJKEP_STR-ETMEINS sy-vline 
WA_MCJKEP_STR-UNTMENGE sy-vline 
WA_MCJKEP_STR-RKMENGE sy-vline 
WA_MCJKEP_STR-NLMENGE sy-vline 
WA_MCJKEP_STR-ETVORZEI sy-vline 
WA_MCJKEP_STR-REMMG_PLAN sy-vline 
WA_MCJKEP_STR-REMME_PLAN sy-vline 
WA_MCJKEP_STR-KPOSN sy-vline 
WA_MCJKEP_STR-NETWR sy-vline 
WA_MCJKEP_STR-MWSBP sy-vline 
WA_MCJKEP_STR-NETPR sy-vline 
WA_MCJKEP_STR-KPEIN sy-vline 
WA_MCJKEP_STR-KMEIN sy-vline 
WA_MCJKEP_STR-SKTOF sy-vline 
WA_MCJKEP_STR-PRSOK sy-vline 
WA_MCJKEP_STR-PRSBINDDAT sy-vline 
WA_MCJKEP_STR-PRSDT sy-vline 
WA_MCJKEP_STR-PRSPER sy-vline 
WA_MCJKEP_STR-BZPERF sy-vline 
WA_MCJKEP_STR-PRSMLT sy-vline 
WA_MCJKEP_STR-PRSDIV sy-vline 
WA_MCJKEP_STR-KZWI1 sy-vline 
WA_MCJKEP_STR-KZWI2 sy-vline 
WA_MCJKEP_STR-KZWI3 sy-vline 
WA_MCJKEP_STR-KZWI4 sy-vline 
WA_MCJKEP_STR-KZWI5 sy-vline 
WA_MCJKEP_STR-KZWI6 sy-vline 
WA_MCJKEP_STR-XSTORNO sy-vline 
WA_MCJKEP_STR-ANZET sy-vline 
WA_MCJKEP_STR-VAUSGB sy-vline 
WA_MCJKEP_STR-ERFUSER sy-vline 
WA_MCJKEP_STR-ERFDATE sy-vline 
WA_MCJKEP_STR-ERFTIME sy-vline 
WA_MCJKEP_STR-AENUSER sy-vline 
WA_MCJKEP_STR-AENDATE sy-vline 
WA_MCJKEP_STR-AENTIME sy-vline 
WA_MCJKEP_STR-LFARTLOG sy-vline 
WA_MCJKEP_STR-XAMOCREDIT sy-vline 
WA_MCJKEP_STR-XAMO_ARCHIVED sy-vline 
WA_MCJKEP_STR-GPNRAG sy-vline 
WA_MCJKEP_STR-GPNRWE sy-vline 
WA_MCJKEP_STR-GPNRRE sy-vline 
WA_MCJKEP_STR-GPNRRG sy-vline 
WA_MCJKEP_STR-GPNRVM sy-vline 
WA_MCJKEP_STR-PLZWE sy-vline 
WA_MCJKEP_STR-PLZRE sy-vline 
WA_MCJKEP_STR-KGSWE sy-vline 
WA_MCJKEP_STR-LIEFBEZIRK sy-vline 
WA_MCJKEP_STR-LIEFGEOEIN sy-vline 
WA_MCJKEP_STR-LIEF_LAND sy-vline 
WA_MCJKEP_STR-ERSCHDAT sy-vline 
WA_MCJKEP_STR-JAHRGANG sy-vline 
WA_MCJKEP_STR-NRIMJAHR sy-vline 
WA_MCJKEP_STR-HEFTNUMMER sy-vline 
WA_MCJKEP_STR-ETMNGNF sy-vline 
WA_MCJKEP_STR-ETMNGVG sy-vline 
WA_MCJKEP_STR-ETMENGE2 sy-vline 
WA_MCJKEP_STR-ETMNGNF2 sy-vline 
WA_MCJKEP_STR-ETMNGVG2 sy-vline 
WA_MCJKEP_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.