ABAP Select data from SAP table /SAPPSSRM/A_HDR_SST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPPSSRM/A_HDR_SST
*  INTO TABLE @DATA(IT_/SAPPSSRM/A_HDR_SST2).
*--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_/SAPPSSRM/A_HDR_SST INDEX 1 INTO DATA(WA_/SAPPSSRM/A_HDR_SST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPPSSRM/A_HDR_SST>-POP = 1.
</SAPPSSRM/A_HDR_SST>-POP_START = 1.
</SAPPSSRM/A_HDR_SST>-POP_END = 1.
</SAPPSSRM/A_HDR_SST>-POP_STATUS = 1.
</SAPPSSRM/A_HDR_SST>-POP_SIGN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPPSSRM/A_HDR_SST-POP_PERCENTAGE, sy-vline,
  WA_/SAPPSSRM/A_HDR_SST-POP_QTY_VAL, sy-vline,
  WA_/SAPPSSRM/A_HDR_SST-POP_VALUE, sy-vline,
  WA_/SAPPSSRM/A_HDR_SST-POP_CALL_VALUE, sy-vline,
  WA_/SAPPSSRM/A_HDR_SST-PS_EST_VAL, sy-vline,
  WA_/SAPPSSRM/A_HDR_SST-PS_POP_SRC_GUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPPSSRM/A_HDR_SST 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_/SAPPSSRM/A_HDR_SST 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_/SAPPSSRM/A_HDR_SST INTO WA_/SAPPSSRM/A_HDR_SST.


*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_/SAPPSSRM/A_HDR_SST_STR, 
POP TYPE STRING,
POP_START TYPE STRING,
POP_END TYPE STRING,
POP_STATUS TYPE STRING,
POP_SIGN TYPE STRING,
POP_PERCENTAGE TYPE STRING,
POP_QTY_VAL TYPE STRING,
POP_VALUE TYPE STRING,
POP_CALL_VALUE TYPE STRING,
PS_EST_VAL TYPE STRING,
PS_POP_SRC_GUID TYPE STRING,
PS_POP_NUM_INT TYPE STRING,
PS_POP_SET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPPSSRM/A_HDR_SST_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_/SAPPSSRM/A_HDR_SST_STR-POP sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_START sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_END sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_STATUS sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_SIGN sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_PERCENTAGE sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_QTY_VAL sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_VALUE sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-POP_CALL_VALUE sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-PS_EST_VAL sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-PS_POP_SRC_GUID sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-PS_POP_NUM_INT sy-vline 
WA_/SAPPSSRM/A_HDR_SST_STR-PS_POP_SET sy-vline      INTO ld_text SEPARATED BY SPACE.

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