ABAP Select data from SAP table MGV_COCH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGV_COCH
*  INTO TABLE @DATA(IT_MGV_COCH2).
*--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_MGV_COCH INDEX 1 INTO DATA(WA_MGV_COCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGV_COCH>-MANDT = 1.
<MGV_COCH>-CRID = 1.
<MGV_COCH>-WERK = 1.
<MGV_COCH>-BID = 1.
<MGV_COCH>-PHSEQ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGV_COCH-ADRES, sy-vline,
  WA_MGV_COCH-COTYP, sy-vline,
  WA_MGV_COCH-TSTKZ, sy-vline,
  WA_MGV_COCH-CRSTAT, sy-vline,
  WA_MGV_COCH-ANDAT, sy-vline,
  WA_MGV_COCH-ANUZT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGV_COCH 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_MGV_COCH 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_MGV_COCH INTO WA_MGV_COCH.


*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 NUMC1, internal->external for field CRID
CALL FUNCTION 'CONVERSION_EXIT_NUMC1_OUTPUT'
  EXPORTING
    input =                      WA_MGV_COCH-CRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_COCH-CRID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_MGV_COCH-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_COCH-MATNR_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERS
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_MGV_COCH-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_COCH-MATNR_VERS.
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_MGV_COCH_STR, 
MANDT TYPE STRING,
CRID TYPE STRING,
WERK TYPE STRING,
BID TYPE STRING,
PHSEQ TYPE STRING,
ADRES TYPE STRING,
COTYP TYPE STRING,
TSTKZ TYPE STRING,
CRSTAT TYPE STRING,
ANDAT TYPE STRING,
ANUZT TYPE STRING,
AEDAT TYPE STRING,
KTXT TYPE STRING,
MATNR TYPE STRING,
MATXT TYPE STRING,
PRUEFLOS TYPE STRING,
ERRKZ TYPE STRING,
ARFCIPID TYPE STRING,
ARFCPID TYPE STRING,
ARFCTIME TYPE STRING,
ARFCTIDCNT TYPE STRING,
EXSTAT TYPE STRING,
CHARG TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
DECNTRL_PRC TYPE STRING,
XS_ID TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGV_COCH_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_MGV_COCH_STR-MANDT sy-vline 
WA_MGV_COCH_STR-CRID sy-vline 
WA_MGV_COCH_STR-WERK sy-vline 
WA_MGV_COCH_STR-BID sy-vline 
WA_MGV_COCH_STR-PHSEQ sy-vline 
WA_MGV_COCH_STR-ADRES sy-vline 
WA_MGV_COCH_STR-COTYP sy-vline 
WA_MGV_COCH_STR-TSTKZ sy-vline 
WA_MGV_COCH_STR-CRSTAT sy-vline 
WA_MGV_COCH_STR-ANDAT sy-vline 
WA_MGV_COCH_STR-ANUZT sy-vline 
WA_MGV_COCH_STR-AEDAT sy-vline 
WA_MGV_COCH_STR-KTXT sy-vline 
WA_MGV_COCH_STR-MATNR sy-vline 
WA_MGV_COCH_STR-MATXT sy-vline 
WA_MGV_COCH_STR-PRUEFLOS sy-vline 
WA_MGV_COCH_STR-ERRKZ sy-vline 
WA_MGV_COCH_STR-ARFCIPID sy-vline 
WA_MGV_COCH_STR-ARFCPID sy-vline 
WA_MGV_COCH_STR-ARFCTIME sy-vline 
WA_MGV_COCH_STR-ARFCTIDCNT sy-vline 
WA_MGV_COCH_STR-EXSTAT sy-vline 
WA_MGV_COCH_STR-CHARG sy-vline 
WA_MGV_COCH_STR-FSAVD sy-vline 
WA_MGV_COCH_STR-FSAVZ sy-vline 
WA_MGV_COCH_STR-DECNTRL_PRC sy-vline 
WA_MGV_COCH_STR-XS_ID sy-vline 
WA_MGV_COCH_STR-MATNR_EXT sy-vline 
WA_MGV_COCH_STR-MATNR_VERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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