ABAP Select data from SAP table SSPICSTRHEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SSPICSTRHEAD
*  INTO TABLE @DATA(IT_SSPICSTRHEAD2).
*--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_SSPICSTRHEAD INDEX 1 INTO DATA(WA_SSPICSTRHEAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SSPICSTRHEAD ASSIGNING <SSPICSTRHEAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SSPICSTRHEAD>-CLIENT = 1.
<SSPICSTRHEAD>-TRGUID = 1.
<SSPICSTRHEAD>-INSTAMP = 1.
<SSPICSTRHEAD>-AGENTID = 1.
<SSPICSTRHEAD>-SIGNATURE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SSPICSTRHEAD-LOGSYS, sy-vline,
  WA_SSPICSTRHEAD-LOCSYSID, sy-vline,
  WA_SSPICSTRHEAD-LOCCLIENT, sy-vline,
  WA_SSPICSTRHEAD-TCODE, sy-vline,
  WA_SSPICSTRHEAD-REPORT, sy-vline,
  WA_SSPICSTRHEAD-DYNPRONR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SSPICSTRHEAD 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_SSPICSTRHEAD 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_SSPICSTRHEAD INTO WA_SSPICSTRHEAD.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SSPICSTRHEAD-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SSPICSTRHEAD-LOGSYS.
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_SSPICSTRHEAD_STR, 
CLIENT TYPE STRING,
TRGUID TYPE STRING,
INSTAMP TYPE STRING,
AGENTID TYPE STRING,
SIGNATURE TYPE STRING,
LOGSYS TYPE STRING,
LOCSYSID TYPE STRING,
LOCCLIENT TYPE STRING,
TCODE TYPE STRING,
REPORT TYPE STRING,
DYNPRONR TYPE STRING,
USERNAME TYPE STRING,
TERMINAL TYPE STRING,
TRANSID TYPE STRING,
WPID TYPE STRING,
HOSTIPADR TYPE STRING,
TIMESTAMP TYPE STRING,
ERROR TYPE STRING,
VBKEY TYPE STRING,
CID TYPE STRING,
CWCNT TYPE STRING,
FINISH TYPE STRING,
NODEID TYPE STRING,
EVNTSTAT TYPE STRING,
DELFLAG TYPE STRING,
TRANSP_PROC_DEP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SSPICSTRHEAD_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_SSPICSTRHEAD_STR-CLIENT sy-vline 
WA_SSPICSTRHEAD_STR-TRGUID sy-vline 
WA_SSPICSTRHEAD_STR-INSTAMP sy-vline 
WA_SSPICSTRHEAD_STR-AGENTID sy-vline 
WA_SSPICSTRHEAD_STR-SIGNATURE sy-vline 
WA_SSPICSTRHEAD_STR-LOGSYS sy-vline 
WA_SSPICSTRHEAD_STR-LOCSYSID sy-vline 
WA_SSPICSTRHEAD_STR-LOCCLIENT sy-vline 
WA_SSPICSTRHEAD_STR-TCODE sy-vline 
WA_SSPICSTRHEAD_STR-REPORT sy-vline 
WA_SSPICSTRHEAD_STR-DYNPRONR sy-vline 
WA_SSPICSTRHEAD_STR-USERNAME sy-vline 
WA_SSPICSTRHEAD_STR-TERMINAL sy-vline 
WA_SSPICSTRHEAD_STR-TRANSID sy-vline 
WA_SSPICSTRHEAD_STR-WPID sy-vline 
WA_SSPICSTRHEAD_STR-HOSTIPADR sy-vline 
WA_SSPICSTRHEAD_STR-TIMESTAMP sy-vline 
WA_SSPICSTRHEAD_STR-ERROR sy-vline 
WA_SSPICSTRHEAD_STR-VBKEY sy-vline 
WA_SSPICSTRHEAD_STR-CID sy-vline 
WA_SSPICSTRHEAD_STR-CWCNT sy-vline 
WA_SSPICSTRHEAD_STR-FINISH sy-vline 
WA_SSPICSTRHEAD_STR-NODEID sy-vline 
WA_SSPICSTRHEAD_STR-EVNTSTAT sy-vline 
WA_SSPICSTRHEAD_STR-DELFLAG sy-vline 
WA_SSPICSTRHEAD_STR-TRANSP_PROC_DEP sy-vline      INTO ld_text SEPARATED BY SPACE.

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