ABAP Select data from SAP table ETOD_LOG_OP_CALL_MSG_FIELDS into internal table

Get Example source ABAP code based on a different SAP table
  

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ETOD_LOG_OP_CALL_MSG_FIELDS
*  INTO TABLE @DATA(IT_ETOD_LOG_OP_CALL_MSG_FIELDS2).
*--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_ETOD_LOG_OP_CALL_MSG_FIELDS INDEX 1 INTO DATA(WA_ETOD_LOG_OP_CALL_MSG_FIELDS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ETOD_LOG_OP_CALL_MSG_FIELDS ASSIGNING <ETOD_LOG_OP_CALL_MSG_FIELDS>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<ETOD_LOG_OP_CALL_MSG_FIELDS>-MESSAGE = 1.
<ETOD_LOG_OP_CALL_MSG_FIELDS>-MSGTEXT = 1.
<ETOD_LOG_OP_CALL_MSG_FIELDS>-MSGSPRA = 1.
<ETOD_LOG_OP_CALL_MSG_FIELDS>-MSGTYP = 1.
<ETOD_LOG_OP_CALL_MSG_FIELDS>-MSGID = 1.
ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ETOD_LOG_OP_CALL_MSG_FIELDS-MSGNR, sy-vline,
WA_ETOD_LOG_OP_CALL_MSG_FIELDS-MSGV1, sy-vline,
WA_ETOD_LOG_OP_CALL_MSG_FIELDS-MSGV2, sy-vline,
WA_ETOD_LOG_OP_CALL_MSG_FIELDS-MSGV3, sy-vline,
WA_ETOD_LOG_OP_CALL_MSG_FIELDS-MSGV4, sy-vline,
ENDLOOP. *Add any further fields from structure WA_ETOD_LOG_OP_CALL_MSG_FIELDS 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_ETOD_LOG_OP_CALL_MSG_FIELDS 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_ETOD_LOG_OP_CALL_MSG_FIELDS INTO WA_ETOD_LOG_OP_CALL_MSG_FIELDS. *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_ETOD_LOG_OP_CALL_MSG_FIELDS_STR,
MESSAGE TYPE STRING,
MSGTEXT TYPE STRING,
MSGSPRA TYPE STRING,
MSGTYP TYPE STRING,
MSGID TYPE STRING,
MSGNR TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,END OF T_EKKO_STR. DATA: WA_ETOD_LOG_OP_CALL_MSG_FIELDS_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_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MESSAGE sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGTEXT sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGSPRA sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGTYP sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGID sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGNR sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGV1 sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGV2 sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGV3 sy-vline
WA_ETOD_LOG_OP_CALL_MSG_FIELDS_STR-MSGV4 sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.