ABAP Select data from SAP table /PLMB/S_GSS_R2B_SU_HEAD 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_R2B_SU_HEAD 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_R2B_SU_HEAD. 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_R2B_SU_HEAD 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_R2B_SU_HEAD TYPE STANDARD TABLE OF /PLMB/S_GSS_R2B_SU_HEAD,
      WA_/PLMB/S_GSS_R2B_SU_HEAD TYPE /PLMB/S_GSS_R2B_SU_HEAD,
      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_R2B_SU_HEAD> TYPE /PLMB/S_GSS_R2B_SU_HEAD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PLMB/S_GSS_R2B_SU_HEAD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PLMB/S_GSS_R2B_SU_HEAD
  INTO TABLE IT_/PLMB/S_GSS_R2B_SU_HEAD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PLMB/S_GSS_R2B_SU_HEAD
*  INTO TABLE @DATA(IT_/PLMB/S_GSS_R2B_SU_HEAD2).
*--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_R2B_SU_HEAD INDEX 1 INTO DATA(WA_/PLMB/S_GSS_R2B_SU_HEAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PLMB/S_GSS_R2B_SU_HEAD ASSIGNING </PLMB/S_GSS_R2B_SU_HEAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PLMB/S_GSS_R2B_SU_HEAD>-ID = 1.
</PLMB/S_GSS_R2B_SU_HEAD>-SYNC_UNIT_EXT = 1.
</PLMB/S_GSS_R2B_SU_HEAD>-SYNC_STATUS = 1.
</PLMB/S_GSS_R2B_SU_HEAD>-SYNC_STATUS_DESC = 1.
</PLMB/S_GSS_R2B_SU_HEAD>-CREATED_BY = 1.

ENDLOOP.

LOOP AT IT_/PLMB/S_GSS_R2B_SU_HEAD INTO WA_/PLMB/S_GSS_R2B_SU_HEAD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PLMB/S_GSS_R2B_SU_HEAD-CREATED_TIMESTMP, sy-vline,
  WA_/PLMB/S_GSS_R2B_SU_HEAD-CHANGED_BY, sy-vline,
  WA_/PLMB/S_GSS_R2B_SU_HEAD-CHANGED_TIMESTMP, sy-vline,
  WA_/PLMB/S_GSS_R2B_SU_HEAD-CREATED_ON, sy-vline,
  WA_/PLMB/S_GSS_R2B_SU_HEAD-CREATED_TIME, sy-vline,
  WA_/PLMB/S_GSS_R2B_SU_HEAD-CHANGED_ON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PLMB/S_GSS_R2B_SU_HEAD 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_R2B_SU_HEAD 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_R2B_SU_HEAD INTO WA_/PLMB/S_GSS_R2B_SU_HEAD.


*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 SYNC_UNIT_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_SU_HEAD-SYNC_UNIT_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_SU_HEAD-SYNC_UNIT_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCALE_TO_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_SU_HEAD-SCALE_TO_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_SU_HEAD-SCALE_TO_UOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRED_SYNC_UNIT_ID_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_SU_HEAD-PRED_SYNC_UNIT_ID_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_SU_HEAD-PRED_SYNC_UNIT_ID_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_SU_HEAD-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_SU_HEAD-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALTERNATIVE_BOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/PLMB/S_GSS_R2B_SU_HEAD-ALTERNATIVE_BOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/PLMB/S_GSS_R2B_SU_HEAD-ALTERNATIVE_BOM.
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_R2B_SU_HEAD_STR, 
ID TYPE STRING,
SYNC_UNIT_EXT TYPE STRING,
SYNC_STATUS TYPE STRING,
SYNC_STATUS_DESC TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_TIMESTMP TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_TIMESTMP TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_TIME TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_TIME TYPE STRING,
SCALE_TO_QTY TYPE STRING,
SCALE_TO_UOM TYPE STRING,
ALT_ITEM_STRAT TYPE STRING,
ACC_ID_INT_BOM TYPE STRING,
EXPLOSION TYPE STRING,
SPLIT_STRATEGY TYPE STRING,
PRED_SYNC_UNIT_ID TYPE STRING,
ACC_ID_EXT_BOM TYPE STRING,
ACC_ID_DESCR TYPE STRING,
PRED_SYNC_UNIT_ID_EXT TYPE STRING,
SUBRECN TYPE STRING,
SUBID TYPE STRING,
ALT_NO TYPE STRING,
PRIM_OUTPUT_DESCR TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BOM_USAGE TYPE STRING,
ALTERNATIVE_BOM TYPE STRING,
BOM_EXISTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PLMB/S_GSS_R2B_SU_HEAD_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_R2B_SU_HEAD_STR-ID sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SYNC_UNIT_EXT sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SYNC_STATUS sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SYNC_STATUS_DESC sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CREATED_BY sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CREATED_TIMESTMP sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CHANGED_BY sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CHANGED_TIMESTMP sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CREATED_ON sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CREATED_TIME sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CHANGED_ON sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-CHANGED_TIME sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SCALE_TO_QTY sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SCALE_TO_UOM sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ALT_ITEM_STRAT sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ACC_ID_INT_BOM sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-EXPLOSION sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SPLIT_STRATEGY sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-PRED_SYNC_UNIT_ID sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ACC_ID_EXT_BOM sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ACC_ID_DESCR sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-PRED_SYNC_UNIT_ID_EXT sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SUBRECN sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-SUBID sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ALT_NO sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-PRIM_OUTPUT_DESCR sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-MATERIAL sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-PLANT sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-BOM_USAGE sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-ALTERNATIVE_BOM sy-vline 
WA_/PLMB/S_GSS_R2B_SU_HEAD_STR-BOM_EXISTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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