ABAP Select data from SAP table TRST_CLASPOS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRST_CLASPOS
*  INTO TABLE @DATA(IT_TRST_CLASPOS2).
*--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_TRST_CLASPOS INDEX 1 INTO DATA(WA_TRST_CLASPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRST_CLASPOS>-MANDT = 1.
<TRST_CLASPOS>-OS_GUID = 1.
<TRST_CLASPOS>-COMPANY_CODE = 1.
<TRST_CLASPOS>-SECURITY_ACCOUNT = 1.
<TRST_CLASPOS>-SECURITY_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRST_CLASPOS-PORTFOLIO, sy-vline,
  WA_TRST_CLASPOS-GRNT_NUM, sy-vline,
  WA_TRST_CLASPOS-FUND, sy-vline,
  WA_TRST_CLASPOS-COM_VAL_CLASS, sy-vline,
  WA_TRST_CLASPOS-POS_CAT, sy-vline,
  WA_TRST_CLASPOS-OBJNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRST_CLASPOS 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_TRST_CLASPOS 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_TRST_CLASPOS INTO WA_TRST_CLASPOS.


*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 SECURITY_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRST_CLASPOS-SECURITY_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_CLASPOS-SECURITY_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit POSCT, internal->external for field POS_CAT
CALL FUNCTION 'CONVERSION_EXIT_POSCT_OUTPUT'
  EXPORTING
    input =                      WA_TRST_CLASPOS-POS_CAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_CLASPOS-POS_CAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field WBS_ELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_TRST_CLASPOS-WBS_ELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_CLASPOS-WBS_ELEMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PROFIT_CENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TRST_CLASPOS-PROFIT_CENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRST_CLASPOS-PROFIT_CENTER.
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_TRST_CLASPOS_STR, 
MANDT TYPE STRING,
OS_GUID TYPE STRING,
COMPANY_CODE TYPE STRING,
SECURITY_ACCOUNT TYPE STRING,
SECURITY_ID TYPE STRING,
PORTFOLIO TYPE STRING,
GRNT_NUM TYPE STRING,
FUND TYPE STRING,
COM_VAL_CLASS TYPE STRING,
POS_CAT TYPE STRING,
OBJNR TYPE STRING,
SMOVERW TYPE STRING,
DANDPFL TYPE STRING,
DANDRE TYPE STRING,
SFIBG TYPE STRING,
SBESANT TYPE STRING,
JSPRI TYPE STRING,
JBETEIL TYPE STRING,
SGLZB TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
FLG_UPDATE_DATA TYPE STRING,
FLG_MASTER_DATA_CHANGED TYPE STRING,
FLOW_GROUP_ID TYPE STRING,
WBS_ELEMENT TYPE STRING,
COST_CENTER TYPE STRING,
PROFIT_CENTER TYPE STRING,
FUNCTIONAL_AREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRST_CLASPOS_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_TRST_CLASPOS_STR-MANDT sy-vline 
WA_TRST_CLASPOS_STR-OS_GUID sy-vline 
WA_TRST_CLASPOS_STR-COMPANY_CODE sy-vline 
WA_TRST_CLASPOS_STR-SECURITY_ACCOUNT sy-vline 
WA_TRST_CLASPOS_STR-SECURITY_ID sy-vline 
WA_TRST_CLASPOS_STR-PORTFOLIO sy-vline 
WA_TRST_CLASPOS_STR-GRNT_NUM sy-vline 
WA_TRST_CLASPOS_STR-FUND sy-vline 
WA_TRST_CLASPOS_STR-COM_VAL_CLASS sy-vline 
WA_TRST_CLASPOS_STR-POS_CAT sy-vline 
WA_TRST_CLASPOS_STR-OBJNR sy-vline 
WA_TRST_CLASPOS_STR-SMOVERW sy-vline 
WA_TRST_CLASPOS_STR-DANDPFL sy-vline 
WA_TRST_CLASPOS_STR-DANDRE sy-vline 
WA_TRST_CLASPOS_STR-SFIBG sy-vline 
WA_TRST_CLASPOS_STR-SBESANT sy-vline 
WA_TRST_CLASPOS_STR-JSPRI sy-vline 
WA_TRST_CLASPOS_STR-JBETEIL sy-vline 
WA_TRST_CLASPOS_STR-SGLZB sy-vline 
WA_TRST_CLASPOS_STR-RERF sy-vline 
WA_TRST_CLASPOS_STR-DERF sy-vline 
WA_TRST_CLASPOS_STR-TERF sy-vline 
WA_TRST_CLASPOS_STR-REHER sy-vline 
WA_TRST_CLASPOS_STR-RBEAR sy-vline 
WA_TRST_CLASPOS_STR-DBEAR sy-vline 
WA_TRST_CLASPOS_STR-TBEAR sy-vline 
WA_TRST_CLASPOS_STR-RBHER sy-vline 
WA_TRST_CLASPOS_STR-FLG_UPDATE_DATA sy-vline 
WA_TRST_CLASPOS_STR-FLG_MASTER_DATA_CHANGED sy-vline 
WA_TRST_CLASPOS_STR-FLOW_GROUP_ID sy-vline 
WA_TRST_CLASPOS_STR-WBS_ELEMENT sy-vline 
WA_TRST_CLASPOS_STR-COST_CENTER sy-vline 
WA_TRST_CLASPOS_STR-PROFIT_CENTER sy-vline 
WA_TRST_CLASPOS_STR-FUNCTIONAL_AREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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