ABAP Select data from SAP table MCEKET_B into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCEKET_B
*  INTO TABLE @DATA(IT_MCEKET_B2).
*--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_MCEKET_B INDEX 1 INTO DATA(WA_MCEKET_B2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCEKET_B>-SUPKZ = 1.
<MCEKET_B>-MANDT = 1.
<MCEKET_B>-EBELN = 1.
<MCEKET_B>-EBELP = 1.
<MCEKET_B>-ETENR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCEKET_B-EINDT, sy-vline,
  WA_MCEKET_B-SLFDT, sy-vline,
  WA_MCEKET_B-MENGE_R, sy-vline,
  WA_MCEKET_B-MENGE, sy-vline,
  WA_MCEKET_B-UZEIT, sy-vline,
  WA_MCEKET_B-MAHNZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCEKET_B 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_MCEKET_B 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_MCEKET_B INTO WA_MCEKET_B.


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

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MCEKET_B-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCEKET_B-BANFN.
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_MCEKET_B_STR, 
SUPKZ TYPE STRING,
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ETENR TYPE STRING,
EINDT TYPE STRING,
SLFDT TYPE STRING,
MENGE_R TYPE STRING,
MENGE TYPE STRING,
UZEIT TYPE STRING,
MAHNZ TYPE STRING,
BEDAT TYPE STRING,
WEMNG_R TYPE STRING,
WEMNG TYPE STRING,
LPEIN TYPE STRING,
WAMNG TYPE STRING,
GLMNG TYPE STRING,
DABMG TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
CHARG TYPE STRING,
REMNG_R TYPE STRING,
REMNG TYPE STRING,
REWRT_R TYPE STRING,
REWRT TYPE STRING,
BZGWR TYPE STRING,
BZGMG TYPE STRING,
WEWRT_R TYPE STRING,
WEWRT TYPE STRING,
BZGWW TYPE STRING,
BBZMNG TYPE STRING,
BBZGEO TYPE STRING,
BBZGVO TYPE STRING,
BBZGVP TYPE STRING,
BBZGEW TYPE STRING,
BBZVOL TYPE STRING,
BBAMNG TYPE STRING,
BBAGEO TYPE STRING,
BBAGVO TYPE STRING,
BBAGVP TYPE STRING,
BBAGEW TYPE STRING,
BBAVOL TYPE STRING,
DBWMNG TYPE STRING,
DBWGEO TYPE STRING,
DBWGVO TYPE STRING,
DBWGVP TYPE STRING,
DBWGEW TYPE STRING,
DBWVOL TYPE STRING,
BIWMNG TYPE STRING,
BIWGEO TYPE STRING,
BIWGVO TYPE STRING,
BIWGVP TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
ERZET TYPE STRING,
HSUPKZ TYPE STRING,
LEDAT TYPE STRING,
DUMMY TYPE STRING,
KEY_ID TYPE STRING,
OTB_VALUE TYPE STRING,
OTB_CURR TYPE STRING,
OTB_RES_VALUE TYPE STRING,
OTB_SPEC_VALUE TYPE STRING,
SPR_RSN_PROFILE TYPE STRING,
BUDG_TYPE TYPE STRING,
OTB_STATUS TYPE STRING,
OTB_REASON TYPE STRING,
CHECK_TYPE TYPE STRING,
DL_ID TYPE STRING,
HANDOVER_DATE TYPE STRING,
NO_SCEM TYPE STRING,
DNG_DATE TYPE STRING,
DNG_TIME TYPE STRING,
CNCL_ANCMNT_DONE TYPE STRING,
DATESHIFT_NUMBER TYPE STRING,
FSH_RALLOC_QTY TYPE STRING,
FSH_SALLOC_QTY TYPE STRING,
BWMNG TYPE STRING,
BWGEOO TYPE STRING,
BWGEO TYPE STRING,
BWGVO TYPE STRING,
BWGVP TYPE STRING,
BWSUPKZ TYPE STRING,
BWKZWI1 TYPE STRING,
BWKZWI2 TYPE STRING,
BWKZWI3 TYPE STRING,
BWKZWI4 TYPE STRING,
BWKZWI5 TYPE STRING,
BWKZWI6 TYPE STRING,
BWNETWR TYPE STRING,
BWBRTWR TYPE STRING,
BWERZET TYPE STRING,
BWEFFWR TYPE STRING,
RTBWMNG TYPE STRING,
RTBWGEO TYPE STRING,
RTBWGVO TYPE STRING,
RTBWGVP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCEKET_B_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_MCEKET_B_STR-SUPKZ sy-vline 
WA_MCEKET_B_STR-MANDT sy-vline 
WA_MCEKET_B_STR-EBELN sy-vline 
WA_MCEKET_B_STR-EBELP sy-vline 
WA_MCEKET_B_STR-ETENR sy-vline 
WA_MCEKET_B_STR-EINDT sy-vline 
WA_MCEKET_B_STR-SLFDT sy-vline 
WA_MCEKET_B_STR-MENGE_R sy-vline 
WA_MCEKET_B_STR-MENGE sy-vline 
WA_MCEKET_B_STR-UZEIT sy-vline 
WA_MCEKET_B_STR-MAHNZ sy-vline 
WA_MCEKET_B_STR-BEDAT sy-vline 
WA_MCEKET_B_STR-WEMNG_R sy-vline 
WA_MCEKET_B_STR-WEMNG sy-vline 
WA_MCEKET_B_STR-LPEIN sy-vline 
WA_MCEKET_B_STR-WAMNG sy-vline 
WA_MCEKET_B_STR-GLMNG sy-vline 
WA_MCEKET_B_STR-DABMG sy-vline 
WA_MCEKET_B_STR-BANFN sy-vline 
WA_MCEKET_B_STR-BNFPO sy-vline 
WA_MCEKET_B_STR-CHARG sy-vline 
WA_MCEKET_B_STR-REMNG_R sy-vline 
WA_MCEKET_B_STR-REMNG sy-vline 
WA_MCEKET_B_STR-REWRT_R sy-vline 
WA_MCEKET_B_STR-REWRT sy-vline 
WA_MCEKET_B_STR-BZGWR sy-vline 
WA_MCEKET_B_STR-BZGMG sy-vline 
WA_MCEKET_B_STR-WEWRT_R sy-vline 
WA_MCEKET_B_STR-WEWRT sy-vline 
WA_MCEKET_B_STR-BZGWW sy-vline 
WA_MCEKET_B_STR-BBZMNG sy-vline 
WA_MCEKET_B_STR-BBZGEO sy-vline 
WA_MCEKET_B_STR-BBZGVO sy-vline 
WA_MCEKET_B_STR-BBZGVP sy-vline 
WA_MCEKET_B_STR-BBZGEW sy-vline 
WA_MCEKET_B_STR-BBZVOL sy-vline 
WA_MCEKET_B_STR-BBAMNG sy-vline 
WA_MCEKET_B_STR-BBAGEO sy-vline 
WA_MCEKET_B_STR-BBAGVO sy-vline 
WA_MCEKET_B_STR-BBAGVP sy-vline 
WA_MCEKET_B_STR-BBAGEW sy-vline 
WA_MCEKET_B_STR-BBAVOL sy-vline 
WA_MCEKET_B_STR-DBWMNG sy-vline 
WA_MCEKET_B_STR-DBWGEO sy-vline 
WA_MCEKET_B_STR-DBWGVO sy-vline 
WA_MCEKET_B_STR-DBWGVP sy-vline 
WA_MCEKET_B_STR-DBWGEW sy-vline 
WA_MCEKET_B_STR-DBWVOL sy-vline 
WA_MCEKET_B_STR-BIWMNG sy-vline 
WA_MCEKET_B_STR-BIWGEO sy-vline 
WA_MCEKET_B_STR-BIWGVO sy-vline 
WA_MCEKET_B_STR-BIWGVP sy-vline 
WA_MCEKET_B_STR-KZWI1 sy-vline 
WA_MCEKET_B_STR-KZWI2 sy-vline 
WA_MCEKET_B_STR-KZWI3 sy-vline 
WA_MCEKET_B_STR-KZWI4 sy-vline 
WA_MCEKET_B_STR-KZWI5 sy-vline 
WA_MCEKET_B_STR-KZWI6 sy-vline 
WA_MCEKET_B_STR-NETWR sy-vline 
WA_MCEKET_B_STR-BRTWR sy-vline 
WA_MCEKET_B_STR-ERZET sy-vline 
WA_MCEKET_B_STR-HSUPKZ sy-vline 
WA_MCEKET_B_STR-LEDAT sy-vline 
WA_MCEKET_B_STR-DUMMY sy-vline 
WA_MCEKET_B_STR-KEY_ID sy-vline 
WA_MCEKET_B_STR-OTB_VALUE sy-vline 
WA_MCEKET_B_STR-OTB_CURR sy-vline 
WA_MCEKET_B_STR-OTB_RES_VALUE sy-vline 
WA_MCEKET_B_STR-OTB_SPEC_VALUE sy-vline 
WA_MCEKET_B_STR-SPR_RSN_PROFILE sy-vline 
WA_MCEKET_B_STR-BUDG_TYPE sy-vline 
WA_MCEKET_B_STR-OTB_STATUS sy-vline 
WA_MCEKET_B_STR-OTB_REASON sy-vline 
WA_MCEKET_B_STR-CHECK_TYPE sy-vline 
WA_MCEKET_B_STR-DL_ID sy-vline 
WA_MCEKET_B_STR-HANDOVER_DATE sy-vline 
WA_MCEKET_B_STR-NO_SCEM sy-vline 
WA_MCEKET_B_STR-DNG_DATE sy-vline 
WA_MCEKET_B_STR-DNG_TIME sy-vline 
WA_MCEKET_B_STR-CNCL_ANCMNT_DONE sy-vline 
WA_MCEKET_B_STR-DATESHIFT_NUMBER sy-vline 
WA_MCEKET_B_STR-FSH_RALLOC_QTY sy-vline 
WA_MCEKET_B_STR-FSH_SALLOC_QTY sy-vline 
WA_MCEKET_B_STR-BWMNG sy-vline 
WA_MCEKET_B_STR-BWGEOO sy-vline 
WA_MCEKET_B_STR-BWGEO sy-vline 
WA_MCEKET_B_STR-BWGVO sy-vline 
WA_MCEKET_B_STR-BWGVP sy-vline 
WA_MCEKET_B_STR-BWSUPKZ sy-vline 
WA_MCEKET_B_STR-BWKZWI1 sy-vline 
WA_MCEKET_B_STR-BWKZWI2 sy-vline 
WA_MCEKET_B_STR-BWKZWI3 sy-vline 
WA_MCEKET_B_STR-BWKZWI4 sy-vline 
WA_MCEKET_B_STR-BWKZWI5 sy-vline 
WA_MCEKET_B_STR-BWKZWI6 sy-vline 
WA_MCEKET_B_STR-BWNETWR sy-vline 
WA_MCEKET_B_STR-BWBRTWR sy-vline 
WA_MCEKET_B_STR-BWERZET sy-vline 
WA_MCEKET_B_STR-BWEFFWR sy-vline 
WA_MCEKET_B_STR-RTBWMNG sy-vline 
WA_MCEKET_B_STR-RTBWGEO sy-vline 
WA_MCEKET_B_STR-RTBWGVO sy-vline 
WA_MCEKET_B_STR-RTBWGVP sy-vline      INTO ld_text SEPARATED BY SPACE.

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