ABAP Select data from SAP table V_CMAC_BUPAS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_CMAC_BUPAS
*  INTO TABLE @DATA(IT_V_CMAC_BUPAS2).
*--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_V_CMAC_BUPAS INDEX 1 INTO DATA(WA_V_CMAC_BUPAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_CMAC_BUPAS>-MANDT = 1.
<V_CMAC_BUPAS>-PLVAR = 1.
<V_CMAC_BUPAS>-OTYPE = 1.
<V_CMAC_BUPAS>-OBJID = 1.
<V_CMAC_BUPAS>-ISTAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_CMAC_BUPAS-BEGDA, sy-vline,
  WA_V_CMAC_BUPAS-ENDDA, sy-vline,
  WA_V_CMAC_BUPAS-NACHN, sy-vline,
  WA_V_CMAC_BUPAS-VORNA, sy-vline,
  WA_V_CMAC_BUPAS-MIDNM, sy-vline,
  WA_V_CMAC_BUPAS-BIRTHNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_CMAC_BUPAS 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_V_CMAC_BUPAS 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_V_CMAC_BUPAS INTO WA_V_CMAC_BUPAS.


*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 PDATE, internal->external for field GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_V_CMAC_BUPAS-GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_CMAC_BUPAS-GBDAT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PIQST, internal->external for field STUDENT12
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_V_CMAC_BUPAS-STUDENT12
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_CMAC_BUPAS-STUDENT12.
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_V_CMAC_BUPAS_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
MIDNM TYPE STRING,
BIRTHNAME TYPE STRING,
NACHN_MC TYPE STRING,
VORNA_MC TYPE STRING,
MIDNM_MC TYPE STRING,
BIRTHNAME_MC TYPE STRING,
GBDAT TYPE STRING,
GBLND TYPE STRING,
PRDNI TYPE STRING,
GESCH TYPE STRING,
FAMST TYPE STRING,
PARTNER TYPE STRING,
MATRIKEL TYPE STRING,
STUDENT12 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_CMAC_BUPAS_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_V_CMAC_BUPAS_STR-MANDT sy-vline 
WA_V_CMAC_BUPAS_STR-PLVAR sy-vline 
WA_V_CMAC_BUPAS_STR-OTYPE sy-vline 
WA_V_CMAC_BUPAS_STR-OBJID sy-vline 
WA_V_CMAC_BUPAS_STR-ISTAT sy-vline 
WA_V_CMAC_BUPAS_STR-BEGDA sy-vline 
WA_V_CMAC_BUPAS_STR-ENDDA sy-vline 
WA_V_CMAC_BUPAS_STR-NACHN sy-vline 
WA_V_CMAC_BUPAS_STR-VORNA sy-vline 
WA_V_CMAC_BUPAS_STR-MIDNM sy-vline 
WA_V_CMAC_BUPAS_STR-BIRTHNAME sy-vline 
WA_V_CMAC_BUPAS_STR-NACHN_MC sy-vline 
WA_V_CMAC_BUPAS_STR-VORNA_MC sy-vline 
WA_V_CMAC_BUPAS_STR-MIDNM_MC sy-vline 
WA_V_CMAC_BUPAS_STR-BIRTHNAME_MC sy-vline 
WA_V_CMAC_BUPAS_STR-GBDAT sy-vline 
WA_V_CMAC_BUPAS_STR-GBLND sy-vline 
WA_V_CMAC_BUPAS_STR-PRDNI sy-vline 
WA_V_CMAC_BUPAS_STR-GESCH sy-vline 
WA_V_CMAC_BUPAS_STR-FAMST sy-vline 
WA_V_CMAC_BUPAS_STR-PARTNER sy-vline 
WA_V_CMAC_BUPAS_STR-MATRIKEL sy-vline 
WA_V_CMAC_BUPAS_STR-STUDENT12 sy-vline      INTO ld_text SEPARATED BY SPACE.

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