ABAP Select data from SAP table /SCWM/S_GR_FIELDMAP 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 /SCWM/S_GR_FIELDMAP 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 /SCWM/S_GR_FIELDMAP. 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 /SCWM/S_GR_FIELDMAP 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_/SCWM/S_GR_FIELDMAP TYPE STANDARD TABLE OF /SCWM/S_GR_FIELDMAP,
      WA_/SCWM/S_GR_FIELDMAP TYPE /SCWM/S_GR_FIELDMAP,
      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: </SCWM/S_GR_FIELDMAP> TYPE /SCWM/S_GR_FIELDMAP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_GR_FIELDMAP
  INTO TABLE IT_/SCWM/S_GR_FIELDMAP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_GR_FIELDMAP
*  INTO TABLE @DATA(IT_/SCWM/S_GR_FIELDMAP2).
*--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_/SCWM/S_GR_FIELDMAP INDEX 1 INTO DATA(WA_/SCWM/S_GR_FIELDMAP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_GR_FIELDMAP ASSIGNING </SCWM/S_GR_FIELDMAP>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_GR_FIELDMAP>-UI_FIELDNAME = 1.
</SCWM/S_GR_FIELDMAP>-LOGFNAME = 1.
</SCWM/S_GR_FIELDMAP>-TIMESTAMP_VALUE = 1.
</SCWM/S_GR_FIELDMAP>-ASPECT = 1.
</SCWM/S_GR_FIELDMAP>-FIELDNAME = 1.
ENDLOOP.

LOOP AT IT_/SCWM/S_GR_FIELDMAP INTO WA_/SCWM/S_GR_FIELDMAP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_GR_FIELDMAP-KEYFIELD1, sy-vline,
WA_/SCWM/S_GR_FIELDMAP-KEYVALUE1, sy-vline,
WA_/SCWM/S_GR_FIELDMAP-KEYFIELD2, sy-vline,
WA_/SCWM/S_GR_FIELDMAP-KEYVALUE2, sy-vline,
WA_/SCWM/S_GR_FIELDMAP-KEYFIELD3, sy-vline,
WA_/SCWM/S_GR_FIELDMAP-KEYVALUE3, sy-vline.
ENDLOOP. *Add any further fields from structure WA_/SCWM/S_GR_FIELDMAP 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_/SCWM/S_GR_FIELDMAP 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_/SCWM/S_GR_FIELDMAP INTO WA_/SCWM/S_GR_FIELDMAP. *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_/SCWM/S_GR_FIELDMAP_STR,
UI_FIELDNAME TYPE STRING,
LOGFNAME TYPE STRING,
TIMESTAMP_VALUE TYPE STRING,
ASPECT TYPE STRING,
FIELDNAME TYPE STRING,
KEYFIELD1 TYPE STRING,
KEYVALUE1 TYPE STRING,
KEYFIELD2 TYPE STRING,
KEYVALUE2 TYPE STRING,
KEYFIELD3 TYPE STRING,
KEYVALUE3 TYPE STRING,
KEYFIELD4 TYPE STRING,
KEYVALUE4 TYPE STRING,
KEYFIELD5 TYPE STRING,
KEYVALUE5 TYPE STRING,END OF T_EKKO_STR. DATA: WA_/SCWM/S_GR_FIELDMAP_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_/SCWM/S_GR_FIELDMAP_STR-UI_FIELDNAME sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-LOGFNAME sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-TIMESTAMP_VALUE sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-ASPECT sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-FIELDNAME sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYFIELD1 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYVALUE1 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYFIELD2 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYVALUE2 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYFIELD3 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYVALUE3 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYFIELD4 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYVALUE4 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYFIELD5 sy-vline
WA_/SCWM/S_GR_FIELDMAP_STR-KEYVALUE5 sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.