ABAP Select data from SAP table CNVCMIS_A_10_SEL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CNVCMIS_A_10_SEL 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 CNVCMIS_A_10_SEL. 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 CNVCMIS_A_10_SEL 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_CNVCMIS_A_10_SEL TYPE STANDARD TABLE OF CNVCMIS_A_10_SEL,
      WA_CNVCMIS_A_10_SEL TYPE CNVCMIS_A_10_SEL,
      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: <CNVCMIS_A_10_SEL> TYPE CNVCMIS_A_10_SEL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CNVCMIS_A_10_SEL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CNVCMIS_A_10_SEL
  INTO TABLE IT_CNVCMIS_A_10_SEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVCMIS_A_10_SEL
*  INTO TABLE @DATA(IT_CNVCMIS_A_10_SEL2).
*--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_CNVCMIS_A_10_SEL INDEX 1 INTO DATA(WA_CNVCMIS_A_10_SEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CNVCMIS_A_10_SEL ASSIGNING <CNVCMIS_A_10_SEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVCMIS_A_10_SEL>-MANDT = 1.
<CNVCMIS_A_10_SEL>-PACKID = 1.
<CNVCMIS_A_10_SEL>-OBJECT = 1.
<CNVCMIS_A_10_SEL>-OBJ_NAME = 1.
<CNVCMIS_A_10_SEL>-SYSID = 1.

ENDLOOP.

LOOP AT IT_CNVCMIS_A_10_SEL INTO WA_CNVCMIS_A_10_SEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVCMIS_A_10_SEL-SUB_TYPE, sy-vline,
  WA_CNVCMIS_A_10_SEL-SUB_NAME, sy-vline,
  WA_CNVCMIS_A_10_SEL-VERSN, sy-vline,
  WA_CNVCMIS_A_10_SEL-AUTHOR, sy-vline,
  WA_CNVCMIS_A_10_SEL-DEVCLASS, sy-vline,
  WA_CNVCMIS_A_10_SEL-CTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVCMIS_A_10_SEL 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_CNVCMIS_A_10_SEL 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_CNVCMIS_A_10_SEL INTO WA_CNVCMIS_A_10_SEL.


*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 ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CNVCMIS_A_10_SEL-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNVCMIS_A_10_SEL-MASTERLANG.
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_CNVCMIS_A_10_SEL_STR, 
MANDT TYPE STRING,
PACKID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
SYSID TYPE STRING,
SUB_TYPE TYPE STRING,
SUB_NAME TYPE STRING,
VERSN TYPE STRING,
AUTHOR TYPE STRING,
DEVCLASS TYPE STRING,
CTEXT TYPE STRING,
APP_HIER TYPE STRING,
APP_HIER_TEXT TYPE STRING,
CATEGORY TYPE STRING,
TRKORR TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
SRCSYSTEM TYPE STRING,
GENFLAG TYPE STRING,
MASTERLANG TYPE STRING,
STATUS TYPE STRING,
MOD_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVCMIS_A_10_SEL_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_CNVCMIS_A_10_SEL_STR-MANDT sy-vline 
WA_CNVCMIS_A_10_SEL_STR-PACKID sy-vline 
WA_CNVCMIS_A_10_SEL_STR-OBJECT sy-vline 
WA_CNVCMIS_A_10_SEL_STR-OBJ_NAME sy-vline 
WA_CNVCMIS_A_10_SEL_STR-SYSID sy-vline 
WA_CNVCMIS_A_10_SEL_STR-SUB_TYPE sy-vline 
WA_CNVCMIS_A_10_SEL_STR-SUB_NAME sy-vline 
WA_CNVCMIS_A_10_SEL_STR-VERSN sy-vline 
WA_CNVCMIS_A_10_SEL_STR-AUTHOR sy-vline 
WA_CNVCMIS_A_10_SEL_STR-DEVCLASS sy-vline 
WA_CNVCMIS_A_10_SEL_STR-CTEXT sy-vline 
WA_CNVCMIS_A_10_SEL_STR-APP_HIER sy-vline 
WA_CNVCMIS_A_10_SEL_STR-APP_HIER_TEXT sy-vline 
WA_CNVCMIS_A_10_SEL_STR-CATEGORY sy-vline 
WA_CNVCMIS_A_10_SEL_STR-TRKORR sy-vline 
WA_CNVCMIS_A_10_SEL_STR-AS4USER sy-vline 
WA_CNVCMIS_A_10_SEL_STR-AS4DATE sy-vline 
WA_CNVCMIS_A_10_SEL_STR-AS4TIME sy-vline 
WA_CNVCMIS_A_10_SEL_STR-SRCSYSTEM sy-vline 
WA_CNVCMIS_A_10_SEL_STR-GENFLAG sy-vline 
WA_CNVCMIS_A_10_SEL_STR-MASTERLANG sy-vline 
WA_CNVCMIS_A_10_SEL_STR-STATUS sy-vline 
WA_CNVCMIS_A_10_SEL_STR-MOD_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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