ABAP Select data from SAP table /MVA/AMCASBTAUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MVA/AMCASBTAUT 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 /MVA/AMCASBTAUT. 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 /MVA/AMCASBTAUT 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_/MVA/AMCASBTAUT TYPE STANDARD TABLE OF /MVA/AMCASBTAUT,
      WA_/MVA/AMCASBTAUT TYPE /MVA/AMCASBTAUT,
      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: </MVA/AMCASBTAUT> TYPE /MVA/AMCASBTAUT.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MVA/AMCASBTAUT
  INTO TABLE IT_/MVA/AMCASBTAUT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMCASBTAUT
*  INTO TABLE @DATA(IT_/MVA/AMCASBTAUT2).
*--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_/MVA/AMCASBTAUT INDEX 1 INTO DATA(WA_/MVA/AMCASBTAUT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MVA/AMCASBTAUT ASSIGNING </MVA/AMCASBTAUT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMCASBTAUT>-/MVA/COMPEMP_FG = 1.
</MVA/AMCASBTAUT>-/MVA/SECDRTR_FG = 1.
</MVA/AMCASBTAUT>-/MVA/FAMILY_FG = 1.
</MVA/AMCASBTAUT>-/MVA/YMILEAGE_VL = 1.
</MVA/AMCASBTAUT>-/MVA/PARKAREA_CD = 1.

ENDLOOP.

LOOP AT IT_/MVA/AMCASBTAUT INTO WA_/MVA/AMCASBTAUT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMCASBTAUT-/MVA/ACQUIS_DT, sy-vline,
  WA_/MVA/AMCASBTAUT-/MVA/USERRNG_CD, sy-vline,
  WA_/MVA/AMCASBTAUT-/MVA/LIMITTO_DT, sy-vline,
  WA_/MVA/AMCASBTAUT-/MVA/BIRTHDYM_DT, sy-vline,
  WA_/MVA/AMCASBTAUT-/MVA/BIRTHDYF_DT, sy-vline,
  WA_/MVA/AMCASBTAUT-/MVA/PROPR_CD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMCASBTAUT 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_/MVA/AMCASBTAUT 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_/MVA/AMCASBTAUT INTO WA_/MVA/AMCASBTAUT.


*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 /MVA/CAPACITY_VL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMCASBTAUT-/MVA/CAPACITY_VL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMCASBTAUT-/MVA/CAPACITY_VL.
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_/MVA/AMCASBTAUT_STR, 
/MVA/COMPEMP_FG TYPE STRING,
/MVA/SECDRTR_FG TYPE STRING,
/MVA/FAMILY_FG TYPE STRING,
/MVA/YMILEAGE_VL TYPE STRING,
/MVA/PARKAREA_CD TYPE STRING,
/MVA/ACQUIS_DT TYPE STRING,
/MVA/USERRNG_CD TYPE STRING,
/MVA/LIMITTO_DT TYPE STRING,
/MVA/BIRTHDYM_DT TYPE STRING,
/MVA/BIRTHDYF_DT TYPE STRING,
/MVA/PROPR_CD TYPE STRING,
/MVA/VEHAGEB_VL TYPE STRING,
/MVA/NAM_ONE_TT TYPE STRING,
/MVA/NAM_TWO_TT TYPE STRING,
/MVA/NAM_THR_TT TYPE STRING,
/MVA/BIR_ONE_DT TYPE STRING,
/MVA/BIR_TWO_DT TYPE STRING,
/MVA/BIR_THR_DT TYPE STRING,
/MVA/TMILEAGE_VL TYPE STRING,
/MVA/CERT_ISS_DT TYPE STRING,
/MVA/REGKEEP_CD TYPE STRING,
/MVA/SURPLUS_VL TYPE STRING,
/MVA/LICENCE_FG TYPE STRING,
/MVA/LICENCE_DT TYPE STRING,
/MVA/OR_REGD_CD TYPE STRING,
/MVA/OR_ADMD_CD TYPE STRING,
/MVA/RE_REGD_CD TYPE STRING,
/MVA/RE_ADMD_CD TYPE STRING,
/MVA/OR_REGD_FG TYPE STRING,
/MVA/RE_REGD_FG TYPE STRING,
/MVA/INSSEATS_VL TYPE STRING,
/MVA/CAPACITY_VL TYPE STRING,
/MVA/DIFFOUTP_VL TYPE STRING,
/MVA/OUTPUT_VL TYPE STRING,
/MVA/PARKAREA_TT TYPE STRING,
/MVA/PROPR_TT TYPE STRING,
/MVA/REGKEEP_TT TYPE STRING,
/MVA/SEATS_VL TYPE STRING,
/MVA/USERRNG_TT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMCASBTAUT_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_/MVA/AMCASBTAUT_STR-/MVA/COMPEMP_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/SECDRTR_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/FAMILY_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/YMILEAGE_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/PARKAREA_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/ACQUIS_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/USERRNG_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/LIMITTO_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/BIRTHDYM_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/BIRTHDYF_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/PROPR_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/VEHAGEB_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/NAM_ONE_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/NAM_TWO_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/NAM_THR_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/BIR_ONE_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/BIR_TWO_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/BIR_THR_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/TMILEAGE_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/CERT_ISS_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/REGKEEP_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/SURPLUS_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/LICENCE_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/LICENCE_DT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/OR_REGD_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/OR_ADMD_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/RE_REGD_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/RE_ADMD_CD sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/OR_REGD_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/RE_REGD_FG sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/INSSEATS_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/CAPACITY_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/DIFFOUTP_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/OUTPUT_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/PARKAREA_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/PROPR_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/REGKEEP_TT sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/SEATS_VL sy-vline 
WA_/MVA/AMCASBTAUT_STR-/MVA/USERRNG_TT sy-vline      INTO ld_text SEPARATED BY SPACE.

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