ABAP Select data from SAP table MEPOITEM_TECH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEPOITEM_TECH
*  INTO TABLE @DATA(IT_MEPOITEM_TECH2).
*--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_MEPOITEM_TECH INDEX 1 INTO DATA(WA_MEPOITEM_TECH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEPOITEM_TECH>-MANDT = 1.
<MEPOITEM_TECH>-STATU = 1.
<MEPOITEM_TECH>-AEDAT = 1.
<MEPOITEM_TECH>-NETWR = 1.
<MEPOITEM_TECH>-BRTWR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEPOITEM_TECH-EFFWR, sy-vline,
  WA_MEPOITEM_TECH-KZWI1, sy-vline,
  WA_MEPOITEM_TECH-KZWI2, sy-vline,
  WA_MEPOITEM_TECH-KZWI3, sy-vline,
  WA_MEPOITEM_TECH-KZWI4, sy-vline,
  WA_MEPOITEM_TECH-KZWI5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEPOITEM_TECH 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_MEPOITEM_TECH 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_MEPOITEM_TECH INTO WA_MEPOITEM_TECH.


*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 EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_MEPOITEM_TECH-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPOITEM_TECH-EAN11.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ABELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEPOITEM_TECH-ABELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEPOITEM_TECH-ABELN.
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_MEPOITEM_TECH_STR, 
MANDT TYPE STRING,
STATU TYPE STRING,
AEDAT TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
EFFWR TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
NAVNW TYPE STRING,
BONBA TYPE STRING,
GNETWR TYPE STRING,
RDPRF TYPE STRING,
KZFME TYPE STRING,
EAN11 TYPE STRING,
BWTTY TYPE STRING,
BSTYP TYPE STRING,
XOBLR TYPE STRING,
STAFO TYPE STRING,
ETDRK TYPE STRING,
FPLNR TYPE STRING,
PACKNO TYPE STRING,
STAPO TYPE STRING,
KO_PRCTR TYPE STRING,
MLMAA TYPE STRING,
MFRPN TYPE STRING,
MFRNR TYPE STRING,
EMNFR TYPE STRING,
BUKRS TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KZBWS TYPE STRING,
UMSOK TYPE STRING,
VORAB TYPE STRING,
ARSNR TYPE STRING,
ARSPS TYPE STRING,
LMEIN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
UPVOR TYPE STRING,
SIKGR TYPE STRING,
USEQU TYPE STRING,
KZKFG TYPE STRING,
CUOBJ TYPE STRING,
CHG_SRV TYPE STRING,
ATTYP TYPE STRING,
SATNR TYPE STRING,
MPROF TYPE STRING,
MTART TYPE STRING,
ZGTYP TYPE STRING,
MFRGR TYPE STRING,
NRFHG TYPE STRING,
TZONRC TYPE STRING,
LEBRE TYPE STRING,
BERID TYPE STRING,
MAHNZ TYPE STRING,
WAERS TYPE STRING,
ID TYPE STRING,
ONLINE_DISPO TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
CONF_ERR TYPE STRING,
ANZSN TYPE STRING,
SERNP1 TYPE STRING,
FLS_RSTO TYPE STRING,
CCOMP TYPE STRING,
SERNP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEPOITEM_TECH_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_MEPOITEM_TECH_STR-MANDT sy-vline 
WA_MEPOITEM_TECH_STR-STATU sy-vline 
WA_MEPOITEM_TECH_STR-AEDAT sy-vline 
WA_MEPOITEM_TECH_STR-NETWR sy-vline 
WA_MEPOITEM_TECH_STR-BRTWR sy-vline 
WA_MEPOITEM_TECH_STR-EFFWR sy-vline 
WA_MEPOITEM_TECH_STR-KZWI1 sy-vline 
WA_MEPOITEM_TECH_STR-KZWI2 sy-vline 
WA_MEPOITEM_TECH_STR-KZWI3 sy-vline 
WA_MEPOITEM_TECH_STR-KZWI4 sy-vline 
WA_MEPOITEM_TECH_STR-KZWI5 sy-vline 
WA_MEPOITEM_TECH_STR-KZWI6 sy-vline 
WA_MEPOITEM_TECH_STR-NAVNW sy-vline 
WA_MEPOITEM_TECH_STR-BONBA sy-vline 
WA_MEPOITEM_TECH_STR-GNETWR sy-vline 
WA_MEPOITEM_TECH_STR-RDPRF sy-vline 
WA_MEPOITEM_TECH_STR-KZFME sy-vline 
WA_MEPOITEM_TECH_STR-EAN11 sy-vline 
WA_MEPOITEM_TECH_STR-BWTTY sy-vline 
WA_MEPOITEM_TECH_STR-BSTYP sy-vline 
WA_MEPOITEM_TECH_STR-XOBLR sy-vline 
WA_MEPOITEM_TECH_STR-STAFO sy-vline 
WA_MEPOITEM_TECH_STR-ETDRK sy-vline 
WA_MEPOITEM_TECH_STR-FPLNR sy-vline 
WA_MEPOITEM_TECH_STR-PACKNO sy-vline 
WA_MEPOITEM_TECH_STR-STAPO sy-vline 
WA_MEPOITEM_TECH_STR-KO_PRCTR sy-vline 
WA_MEPOITEM_TECH_STR-MLMAA sy-vline 
WA_MEPOITEM_TECH_STR-MFRPN sy-vline 
WA_MEPOITEM_TECH_STR-MFRNR sy-vline 
WA_MEPOITEM_TECH_STR-EMNFR sy-vline 
WA_MEPOITEM_TECH_STR-BUKRS sy-vline 
WA_MEPOITEM_TECH_STR-SOBKZ sy-vline 
WA_MEPOITEM_TECH_STR-KZVBR sy-vline 
WA_MEPOITEM_TECH_STR-KZBWS sy-vline 
WA_MEPOITEM_TECH_STR-UMSOK sy-vline 
WA_MEPOITEM_TECH_STR-VORAB sy-vline 
WA_MEPOITEM_TECH_STR-ARSNR sy-vline 
WA_MEPOITEM_TECH_STR-ARSPS sy-vline 
WA_MEPOITEM_TECH_STR-LMEIN sy-vline 
WA_MEPOITEM_TECH_STR-UMREZ sy-vline 
WA_MEPOITEM_TECH_STR-UMREN sy-vline 
WA_MEPOITEM_TECH_STR-UPVOR sy-vline 
WA_MEPOITEM_TECH_STR-SIKGR sy-vline 
WA_MEPOITEM_TECH_STR-USEQU sy-vline 
WA_MEPOITEM_TECH_STR-KZKFG sy-vline 
WA_MEPOITEM_TECH_STR-CUOBJ sy-vline 
WA_MEPOITEM_TECH_STR-CHG_SRV sy-vline 
WA_MEPOITEM_TECH_STR-ATTYP sy-vline 
WA_MEPOITEM_TECH_STR-SATNR sy-vline 
WA_MEPOITEM_TECH_STR-MPROF sy-vline 
WA_MEPOITEM_TECH_STR-MTART sy-vline 
WA_MEPOITEM_TECH_STR-ZGTYP sy-vline 
WA_MEPOITEM_TECH_STR-MFRGR sy-vline 
WA_MEPOITEM_TECH_STR-NRFHG sy-vline 
WA_MEPOITEM_TECH_STR-TZONRC sy-vline 
WA_MEPOITEM_TECH_STR-LEBRE sy-vline 
WA_MEPOITEM_TECH_STR-BERID sy-vline 
WA_MEPOITEM_TECH_STR-MAHNZ sy-vline 
WA_MEPOITEM_TECH_STR-WAERS sy-vline 
WA_MEPOITEM_TECH_STR-ID sy-vline 
WA_MEPOITEM_TECH_STR-ONLINE_DISPO sy-vline 
WA_MEPOITEM_TECH_STR-ABELN sy-vline 
WA_MEPOITEM_TECH_STR-ABELP sy-vline 
WA_MEPOITEM_TECH_STR-CONF_ERR sy-vline 
WA_MEPOITEM_TECH_STR-ANZSN sy-vline 
WA_MEPOITEM_TECH_STR-SERNP1 sy-vline 
WA_MEPOITEM_TECH_STR-FLS_RSTO sy-vline 
WA_MEPOITEM_TECH_STR-CCOMP sy-vline 
WA_MEPOITEM_TECH_STR-SERNP sy-vline      INTO ld_text SEPARATED BY SPACE.

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