ABAP Select data from SAP table FRMLS_LOG_REC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FRMLS_LOG_REC
*  INTO TABLE @DATA(IT_FRMLS_LOG_REC2).
*--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_FRMLS_LOG_REC INDEX 1 INTO DATA(WA_FRMLS_LOG_REC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FRMLS_LOG_REC>-RECNROOT = 1.
<FRMLS_LOG_REC>-RECN = 1.
<FRMLS_LOG_REC>-AENNR = 1.
<FRMLS_LOG_REC>-MSGCLASS = 1.
<FRMLS_LOG_REC>-MSGTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FRMLS_LOG_REC-MSGNUMBER, sy-vline,
  WA_FRMLS_LOG_REC-MSGPARAM1, sy-vline,
  WA_FRMLS_LOG_REC-MSGPARAM2, sy-vline,
  WA_FRMLS_LOG_REC-MSGPARAM3, sy-vline,
  WA_FRMLS_LOG_REC-MSGPARAM4, sy-vline,
  WA_FRMLS_LOG_REC-MSGFIELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FRMLS_LOG_REC 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_FRMLS_LOG_REC 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_FRMLS_LOG_REC INTO WA_FRMLS_LOG_REC.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FRMLS_LOG_REC-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FRMLS_LOG_REC-AENNR.
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_FRMLS_LOG_REC_STR, 
RECNROOT TYPE STRING,
RECN TYPE STRING,
AENNR TYPE STRING,
MSGCLASS TYPE STRING,
MSGTYPE TYPE STRING,
MSGNUMBER TYPE STRING,
MSGPARAM1 TYPE STRING,
MSGPARAM2 TYPE STRING,
MSGPARAM3 TYPE STRING,
MSGPARAM4 TYPE STRING,
MSGFIELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FRMLS_LOG_REC_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_FRMLS_LOG_REC_STR-RECNROOT sy-vline 
WA_FRMLS_LOG_REC_STR-RECN sy-vline 
WA_FRMLS_LOG_REC_STR-AENNR sy-vline 
WA_FRMLS_LOG_REC_STR-MSGCLASS sy-vline 
WA_FRMLS_LOG_REC_STR-MSGTYPE sy-vline 
WA_FRMLS_LOG_REC_STR-MSGNUMBER sy-vline 
WA_FRMLS_LOG_REC_STR-MSGPARAM1 sy-vline 
WA_FRMLS_LOG_REC_STR-MSGPARAM2 sy-vline 
WA_FRMLS_LOG_REC_STR-MSGPARAM3 sy-vline 
WA_FRMLS_LOG_REC_STR-MSGPARAM4 sy-vline 
WA_FRMLS_LOG_REC_STR-MSGFIELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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