ABAP Select data from SAP table VIMSM_COMM_LOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIMSM_COMM_LOG
*  INTO TABLE @DATA(IT_VIMSM_COMM_LOG2).
*--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_VIMSM_COMM_LOG INDEX 1 INTO DATA(WA_VIMSM_COMM_LOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIMSM_COMM_LOG>-MANDANT = 1.
<VIMSM_COMM_LOG>-M_FOLTP = 1.
<VIMSM_COMM_LOG>-M_FOLYR = 1.
<VIMSM_COMM_LOG>-M_FOLNO = 1.
<VIMSM_COMM_LOG>-M_OBJTP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIMSM_COMM_LOG-M_OBJYR, sy-vline,
  WA_VIMSM_COMM_LOG-M_OBJNO, sy-vline,
  WA_VIMSM_COMM_LOG-M_COUNTER, sy-vline,
  WA_VIMSM_COMM_LOG-R_ADRTP, sy-vline,
  WA_VIMSM_COMM_LOG-R_ADRYR, sy-vline,
  WA_VIMSM_COMM_LOG-R_ADRNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIMSM_COMM_LOG 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_VIMSM_COMM_LOG 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_VIMSM_COMM_LOG INTO WA_VIMSM_COMM_LOG.


*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 R_PARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIMSM_COMM_LOG-R_PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIMSM_COMM_LOG-R_PARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field A_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VIMSM_COMM_LOG-A_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VIMSM_COMM_LOG-A_LOGSYS.
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_VIMSM_COMM_LOG_STR, 
MANDANT TYPE STRING,
M_FOLTP TYPE STRING,
M_FOLYR TYPE STRING,
M_FOLNO TYPE STRING,
M_OBJTP TYPE STRING,
M_OBJYR TYPE STRING,
M_OBJNO TYPE STRING,
M_COUNTER TYPE STRING,
R_ADRTP TYPE STRING,
R_ADRYR TYPE STRING,
R_ADRNO TYPE STRING,
R_NRART TYPE STRING,
R_PARNR TYPE STRING,
R_COMM_TYP TYPE STRING,
R_COMM_ID TYPE STRING,
S_CODE TYPE STRING,
S_TEXT TYPE STRING,
S_DATE TYPE STRING,
S_TIME TYPE STRING,
A_OBJFLAG TYPE STRING,
A_OBJKEY TYPE STRING,
A_OBJTYPE TYPE STRING,
A_LOGSYS TYPE STRING,
P_TEXT TYPE STRING,
P_USERID TYPE STRING,
P_DATE TYPE STRING,
P_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIMSM_COMM_LOG_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_VIMSM_COMM_LOG_STR-MANDANT sy-vline 
WA_VIMSM_COMM_LOG_STR-M_FOLTP sy-vline 
WA_VIMSM_COMM_LOG_STR-M_FOLYR sy-vline 
WA_VIMSM_COMM_LOG_STR-M_FOLNO sy-vline 
WA_VIMSM_COMM_LOG_STR-M_OBJTP sy-vline 
WA_VIMSM_COMM_LOG_STR-M_OBJYR sy-vline 
WA_VIMSM_COMM_LOG_STR-M_OBJNO sy-vline 
WA_VIMSM_COMM_LOG_STR-M_COUNTER sy-vline 
WA_VIMSM_COMM_LOG_STR-R_ADRTP sy-vline 
WA_VIMSM_COMM_LOG_STR-R_ADRYR sy-vline 
WA_VIMSM_COMM_LOG_STR-R_ADRNO sy-vline 
WA_VIMSM_COMM_LOG_STR-R_NRART sy-vline 
WA_VIMSM_COMM_LOG_STR-R_PARNR sy-vline 
WA_VIMSM_COMM_LOG_STR-R_COMM_TYP sy-vline 
WA_VIMSM_COMM_LOG_STR-R_COMM_ID sy-vline 
WA_VIMSM_COMM_LOG_STR-S_CODE sy-vline 
WA_VIMSM_COMM_LOG_STR-S_TEXT sy-vline 
WA_VIMSM_COMM_LOG_STR-S_DATE sy-vline 
WA_VIMSM_COMM_LOG_STR-S_TIME sy-vline 
WA_VIMSM_COMM_LOG_STR-A_OBJFLAG sy-vline 
WA_VIMSM_COMM_LOG_STR-A_OBJKEY sy-vline 
WA_VIMSM_COMM_LOG_STR-A_OBJTYPE sy-vline 
WA_VIMSM_COMM_LOG_STR-A_LOGSYS sy-vline 
WA_VIMSM_COMM_LOG_STR-P_TEXT sy-vline 
WA_VIMSM_COMM_LOG_STR-P_USERID sy-vline 
WA_VIMSM_COMM_LOG_STR-P_DATE sy-vline 
WA_VIMSM_COMM_LOG_STR-P_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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