ABAP Select data from SAP table MNT_S_CAUFV 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 MNT_S_CAUFV 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 MNT_S_CAUFV. 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 MNT_S_CAUFV 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_MNT_S_CAUFV TYPE STANDARD TABLE OF MNT_S_CAUFV,
      WA_MNT_S_CAUFV TYPE MNT_S_CAUFV,
      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: <MNT_S_CAUFV> TYPE MNT_S_CAUFV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MNT_S_CAUFV
*  INTO TABLE @DATA(IT_MNT_S_CAUFV2).
*--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_MNT_S_CAUFV INDEX 1 INTO DATA(WA_MNT_S_CAUFV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MNT_S_CAUFV>-AUFNR = 1.
<MNT_S_CAUFV>-AUART = 1.
<MNT_S_CAUFV>-WERKS = 1.
<MNT_S_CAUFV>-AUFPL = 1.
<MNT_S_CAUFV>-RSNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MNT_S_CAUFV-OBJNR, sy-vline,
  WA_MNT_S_CAUFV-FEVOR, sy-vline,
  WA_MNT_S_CAUFV-GLTRS, sy-vline,
  WA_MNT_S_CAUFV-GLUZS, sy-vline,
  WA_MNT_S_CAUFV-EQUNR, sy-vline,
  WA_MNT_S_CAUFV-PPSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MNT_S_CAUFV 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_MNT_S_CAUFV 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_MNT_S_CAUFV INTO WA_MNT_S_CAUFV.


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

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MNT_S_CAUFV-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MNT_S_CAUFV-EQUNR.
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_MNT_S_CAUFV_STR, 
AUFNR TYPE STRING,
AUART TYPE STRING,
WERKS TYPE STRING,
AUFPL TYPE STRING,
RSNUM TYPE STRING,
OBJNR TYPE STRING,
FEVOR TYPE STRING,
GLTRS TYPE STRING,
GLUZS TYPE STRING,
EQUNR TYPE STRING,
PPSID TYPE STRING,
ANLZU TYPE STRING,
VBKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MNT_S_CAUFV_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_MNT_S_CAUFV_STR-AUFNR sy-vline 
WA_MNT_S_CAUFV_STR-AUART sy-vline 
WA_MNT_S_CAUFV_STR-WERKS sy-vline 
WA_MNT_S_CAUFV_STR-AUFPL sy-vline 
WA_MNT_S_CAUFV_STR-RSNUM sy-vline 
WA_MNT_S_CAUFV_STR-OBJNR sy-vline 
WA_MNT_S_CAUFV_STR-FEVOR sy-vline 
WA_MNT_S_CAUFV_STR-GLTRS sy-vline 
WA_MNT_S_CAUFV_STR-GLUZS sy-vline 
WA_MNT_S_CAUFV_STR-EQUNR sy-vline 
WA_MNT_S_CAUFV_STR-PPSID sy-vline 
WA_MNT_S_CAUFV_STR-ANLZU sy-vline 
WA_MNT_S_CAUFV_STR-VBKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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