ABAP Select data from SAP table /PLMB/S_GSS_I2B_MAPPING_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PLMB/S_GSS_I2B_MAPPING_DATA 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 /PLMB/S_GSS_I2B_MAPPING_DATA. 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 /PLMB/S_GSS_I2B_MAPPING_DATA 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_/PLMB/S_GSS_I2B_MAPPING_DATA TYPE STANDARD TABLE OF /PLMB/S_GSS_I2B_MAPPING_DATA,
      WA_/PLMB/S_GSS_I2B_MAPPING_DATA TYPE /PLMB/S_GSS_I2B_MAPPING_DATA,
      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: </PLMB/S_GSS_I2B_MAPPING_DATA> TYPE /PLMB/S_GSS_I2B_MAPPING_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PLMB/S_GSS_I2B_MAPPING_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMB/S_GSS_I2B_MAPPING_DATA
  INTO TABLE IT_/PLMB/S_GSS_I2B_MAPPING_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMB/S_GSS_I2B_MAPPING_DATA
*  INTO TABLE @DATA(IT_/PLMB/S_GSS_I2B_MAPPING_DATA2).
*--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_/PLMB/S_GSS_I2B_MAPPING_DATA INDEX 1 INTO DATA(WA_/PLMB/S_GSS_I2B_MAPPING_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMB/S_GSS_I2B_MAPPING_DATA ASSIGNING </PLMB/S_GSS_I2B_MAPPING_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMB/S_GSS_I2B_MAPPING_DATA>-ROOT_SOT = 1.
</PLMB/S_GSS_I2B_MAPPING_DATA>-KEY_DATE = 1.
</PLMB/S_GSS_I2B_MAPPING_DATA>-TIME_SLICE_DISPLAY_KEY = 1.
</PLMB/S_GSS_I2B_MAPPING_DATA>-FILTER_QTY_OK = 1.
</PLMB/S_GSS_I2B_MAPPING_DATA>-FILTER_SRC_GT_TRG = 1.

ENDLOOP.

LOOP AT IT_/PLMB/S_GSS_I2B_MAPPING_DATA INTO WA_/PLMB/S_GSS_I2B_MAPPING_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMB/S_GSS_I2B_MAPPING_DATA-FILTER_TRG_GT_SRC, sy-vline,
  WA_/PLMB/S_GSS_I2B_MAPPING_DATA-FILTER_NO_SRC_FOR_TRG, sy-vline,
  WA_/PLMB/S_GSS_I2B_MAPPING_DATA-FILTER_NO_TRG_FOR_SRC, sy-vline,
  WA_/PLMB/S_GSS_I2B_MAPPING_DATA-FILTER_MAP_TO_BOM_HDR, sy-vline,
  WA_/PLMB/S_GSS_I2B_MAPPING_DATA-FILTER_ERR_IN_MAPPING, sy-vline,
  WA_/PLMB/S_GSS_I2B_MAPPING_DATA-ROW_PARENT_KEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMB/S_GSS_I2B_MAPPING_DATA 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_/PLMB/S_GSS_I2B_MAPPING_DATA 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_/PLMB/S_GSS_I2B_MAPPING_DATA INTO WA_/PLMB/S_GSS_I2B_MAPPING_DATA.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_I2B_MAPPING_DATA-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_I2B_MAPPING_DATA-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_I2B_MAPPING_DATA-ECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_I2B_MAPPING_DATA-ECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_I2B_MAPPING_DATA-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_I2B_MAPPING_DATA-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_I2B_MAPPING_DATA-BASE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_I2B_MAPPING_DATA-BASE_UNIT.
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_/PLMB/S_GSS_I2B_MAPPING_DATA_STR, 
ROOT_SOT TYPE STRING,
KEY_DATE TYPE STRING,
TIME_SLICE_DISPLAY_KEY TYPE STRING,
FILTER_QTY_OK TYPE STRING,
FILTER_SRC_GT_TRG TYPE STRING,
FILTER_TRG_GT_SRC TYPE STRING,
FILTER_NO_SRC_FOR_TRG TYPE STRING,
FILTER_NO_TRG_FOR_SRC TYPE STRING,
FILTER_MAP_TO_BOM_HDR TYPE STRING,
FILTER_ERR_IN_MAPPING TYPE STRING,
ROW_PARENT_KEY TYPE STRING,
ROW_KEY TYPE STRING,
ROW_DISPLAY_KEY TYPE STRING,
ICON TYPE STRING,
ICON_DESCR TYPE STRING,
IS_LEAF TYPE STRING,
MATERIAL TYPE STRING,
MATERIAL_DESCR TYPE STRING,
PLANT TYPE STRING,
ECN TYPE STRING,
VALID_FROM TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
REQ_QUANTITY TYPE STRING,
BASE_UNIT TYPE STRING,
BASE_QUANTITY TYPE STRING,
QUANTITY_DIFF TYPE STRING,
QUANTITY_DIFF_ICON TYPE STRING,
QUANTITY_DIFF_ICON_DESCR TYPE STRING,
MAPPING_STATUS TYPE STRING,
ICON_CONFL TYPE STRING,
ICON_CONF_DESCR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMB/S_GSS_I2B_MAPPING_DATA_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_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ROOT_SOT sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-KEY_DATE sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-TIME_SLICE_DISPLAY_KEY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_QTY_OK sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_SRC_GT_TRG sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_TRG_GT_SRC sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_NO_SRC_FOR_TRG sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_NO_TRG_FOR_SRC sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_MAP_TO_BOM_HDR sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-FILTER_ERR_IN_MAPPING sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ROW_PARENT_KEY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ROW_KEY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ROW_DISPLAY_KEY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ICON sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ICON_DESCR sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-IS_LEAF sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-MATERIAL sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-MATERIAL_DESCR sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-PLANT sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ECN sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-VALID_FROM sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-QUANTITY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-UNIT sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-REQ_QUANTITY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-BASE_UNIT sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-BASE_QUANTITY sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-QUANTITY_DIFF sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-QUANTITY_DIFF_ICON sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-QUANTITY_DIFF_ICON_DESCR sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-MAPPING_STATUS sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ICON_CONFL sy-vline 
WA_/PLMB/S_GSS_I2B_MAPPING_DATA_STR-ICON_CONF_DESCR sy-vline      INTO ld_text SEPARATED BY SPACE.

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