ABAP Select data from SAP table ACMRT_AUNIT_CDSV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACMRT_AUNIT_CDSV
*  INTO TABLE @DATA(IT_ACMRT_AUNIT_CDSV2).
*--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_ACMRT_AUNIT_CDSV INDEX 1 INTO DATA(WA_ACMRT_AUNIT_CDSV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACMRT_AUNIT_CDSV>-MANDT = 1.
<ACMRT_AUNIT_CDSV>-ID = 1.
<ACMRT_AUNIT_CDSV>-TESTCOMMENT = 1.
<ACMRT_AUNIT_CDSV>-CHAR6 = 1.
<ACMRT_AUNIT_CDSV>-CHAR20 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACMRT_AUNIT_CDSV-SSTRING10, sy-vline,
  WA_ACMRT_AUNIT_CDSV-NUMC8, sy-vline,
  WA_ACMRT_AUNIT_CDSV-DATS, sy-vline,
  WA_ACMRT_AUNIT_CDSV-TIMS, sy-vline,
  WA_ACMRT_AUNIT_CDSV-DEC52, sy-vline,
  WA_ACMRT_AUNIT_CDSV-DEC62, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACMRT_AUNIT_CDSV 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_ACMRT_AUNIT_CDSV 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_ACMRT_AUNIT_CDSV INTO WA_ACMRT_AUNIT_CDSV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ACMRT_AUNIT_CDSV_STR, 
MANDT TYPE STRING,
ID TYPE STRING,
TESTCOMMENT TYPE STRING,
CHAR6 TYPE STRING,
CHAR20 TYPE STRING,
SSTRING10 TYPE STRING,
NUMC8 TYPE STRING,
DATS TYPE STRING,
TIMS TYPE STRING,
DEC52 TYPE STRING,
DEC62 TYPE STRING,
INT1 TYPE STRING,
INT2 TYPE STRING,
INT4 TYPE STRING,
INT8 TYPE STRING,
DECFLOAT16 TYPE STRING,
DECFLOAT34 TYPE STRING,
D16D_10_3 TYPE STRING,
DATN TYPE STRING,
TIMN TYPE STRING,
D16N TYPE STRING,
D34N TYPE STRING,
UTCLONG TYPE STRING,
LONGSTRING TYPE STRING,
GUID TYPE STRING,
CHAR20_NULLABLE TYPE STRING,
P__DATUM TYPE STRING,
P__UNAME TYPE STRING,
IN_CHAR10 TYPE STRING,
STATE1 TYPE STRING,
STATE2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACMRT_AUNIT_CDSV_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_ACMRT_AUNIT_CDSV_STR-MANDT sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-ID sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-TESTCOMMENT sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-CHAR6 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-CHAR20 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-SSTRING10 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-NUMC8 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DATS sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-TIMS sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DEC52 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DEC62 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-INT1 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-INT2 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-INT4 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-INT8 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DECFLOAT16 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DECFLOAT34 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-D16D_10_3 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-DATN sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-TIMN sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-D16N sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-D34N sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-UTCLONG sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-LONGSTRING sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-GUID sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-CHAR20_NULLABLE sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-P__DATUM sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-P__UNAME sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-IN_CHAR10 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-STATE1 sy-vline 
WA_ACMRT_AUNIT_CDSV_STR-STATE2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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