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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MVA/AMAABMPROC
*  INTO TABLE @DATA(IT_/MVA/AMAABMPROC2).
*--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/AMAABMPROC INDEX 1 INTO DATA(WA_/MVA/AMAABMPROC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MVA/AMAABMPROC>-/MVA/BMDATA_ID = 1.
</MVA/AMAABMPROC>-/MVA/EFFECT_DT = 1.
</MVA/AMAABMPROC>-/MVA/PREMSTEP_ID = 1.
</MVA/AMAABMPROC>-/MVA/PRSTEXT_ID = 1.
</MVA/AMAABMPROC>-/MVA/BREAKINT_AM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MVA/AMAABMPROC-/MVA/BREAKEXT_AM, sy-vline,
  WA_/MVA/AMAABMPROC-/MVA/BREAK_AM, sy-vline,
  WA_/MVA/AMAABMPROC-/MVA/CLAIMINT_AM, sy-vline,
  WA_/MVA/AMAABMPROC-/MVA/CLAIMEXT_AM, sy-vline,
  WA_/MVA/AMAABMPROC-/MVA/CLAIMS_AM, sy-vline,
  WA_/MVA/AMAABMPROC-/MVA/APPLNR_TT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MVA/AMAABMPROC 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/AMAABMPROC 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/AMAABMPROC INTO WA_/MVA/AMAABMPROC.


*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/APPLNR_TT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMAABMPROC-/MVA/APPLNR_TT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMAABMPROC-/MVA/APPLNR_TT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field /MVA/COVNR_TT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MVA/AMAABMPROC-/MVA/COVNR_TT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MVA/AMAABMPROC-/MVA/COVNR_TT.
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/AMAABMPROC_STR, 
/MVA/BMDATA_ID TYPE STRING,
/MVA/EFFECT_DT TYPE STRING,
/MVA/PREMSTEP_ID TYPE STRING,
/MVA/PRSTEXT_ID TYPE STRING,
/MVA/BREAKINT_AM TYPE STRING,
/MVA/BREAKEXT_AM TYPE STRING,
/MVA/BREAK_AM TYPE STRING,
/MVA/CLAIMINT_AM TYPE STRING,
/MVA/CLAIMEXT_AM TYPE STRING,
/MVA/CLAIMS_AM TYPE STRING,
/MVA/APPLNR_TT TYPE STRING,
/MVA/COVNR_TT TYPE STRING,
/MVA/COVPAC_ID TYPE STRING,
/MVA/COVPAC_TT TYPE STRING,
PM_ID TYPE STRING,
ELEMENTPROD_TT TYPE STRING,
PRODUCT_TT TYPE STRING,
COVERAGE_ID TYPE STRING,
SUBJECT_TD TYPE STRING,
/MVA/PREMSTEP_TT TYPE STRING,
/MVA/PREMSTEPEXT_TT TYPE STRING,
/MVA/BM_OID TYPE STRING,
/MVA/SIMULATED_FG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MVA/AMAABMPROC_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/AMAABMPROC_STR-/MVA/BMDATA_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/EFFECT_DT sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/PREMSTEP_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/PRSTEXT_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/BREAKINT_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/BREAKEXT_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/BREAK_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/CLAIMINT_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/CLAIMEXT_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/CLAIMS_AM sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/APPLNR_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/COVNR_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/COVPAC_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/COVPAC_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-PM_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-ELEMENTPROD_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-PRODUCT_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-COVERAGE_ID sy-vline 
WA_/MVA/AMAABMPROC_STR-SUBJECT_TD sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/PREMSTEP_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/PREMSTEPEXT_TT sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/BM_OID sy-vline 
WA_/MVA/AMAABMPROC_STR-/MVA/SIMULATED_FG sy-vline      INTO ld_text SEPARATED BY SPACE.

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