ABAP Select data from SAP table /SAPPCE/SDPC_RETENTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPPCE/SDPC_RETENTION
*  INTO TABLE @DATA(IT_/SAPPCE/SDPC_RETENTION2).
*--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_/SAPPCE/SDPC_RETENTION INDEX 1 INTO DATA(WA_/SAPPCE/SDPC_RETENTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPPCE/SDPC_RETENTION>-DCWTP = 1.
</SAPPCE/SDPC_RETENTION>-DPROZ = 1.
</SAPPCE/SDPC_RETENTION>-DWPER = 1.
</SAPPCE/SDPC_RETENTION>-DATTP = 1.
</SAPPCE/SDPC_RETENTION>-DWTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPPCE/SDPC_RETENTION-DPWVL, sy-vline,
  WA_/SAPPCE/SDPC_RETENTION-BLINE_DATE, sy-vline,
  WA_/SAPPCE/SDPC_RETENTION-CURRENCY, sy-vline,
  WA_/SAPPCE/SDPC_RETENTION-SEC_RET, sy-vline,
  WA_/SAPPCE/SDPC_RETENTION-SEC_RET_CUM, sy-vline,
  WA_/SAPPCE/SDPC_RETENTION-SEC_RET_LCUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPPCE/SDPC_RETENTION 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_/SAPPCE/SDPC_RETENTION 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_/SAPPCE/SDPC_RETENTION INTO WA_/SAPPCE/SDPC_RETENTION.


*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 AC132, internal->external for field SEC_RET
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-SEC_RET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-SEC_RET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SEC_RET_CUM
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-SEC_RET_CUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-SEC_RET_CUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SEC_RET_LCUM
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-SEC_RET_LCUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-SEC_RET_LCUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SEC_RET_DELTA
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-SEC_RET_DELTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-SEC_RET_DELTA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PERCENTAGE_BASE
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-PERCENTAGE_BASE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-PERCENTAGE_BASE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PERC_BASE_VIEW_MODE
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPCE/SDPC_RETENTION-PERC_BASE_VIEW_MODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPCE/SDPC_RETENTION-PERC_BASE_VIEW_MODE.
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_/SAPPCE/SDPC_RETENTION_STR, 
DCWTP TYPE STRING,
DPROZ TYPE STRING,
DWPER TYPE STRING,
DATTP TYPE STRING,
DWTXT TYPE STRING,
DPWVL TYPE STRING,
BLINE_DATE TYPE STRING,
CURRENCY TYPE STRING,
SEC_RET TYPE STRING,
SEC_RET_CUM TYPE STRING,
SEC_RET_LCUM TYPE STRING,
SEC_RET_DELTA TYPE STRING,
BLINE_DATE_OLD TYPE STRING,
PERCENTAGE_BASE TYPE STRING,
PERC_BASE_VIEW_MODE TYPE STRING,
BASE_AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPPCE/SDPC_RETENTION_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_/SAPPCE/SDPC_RETENTION_STR-DCWTP sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-DPROZ sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-DWPER sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-DATTP sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-DWTXT sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-DPWVL sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-BLINE_DATE sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-CURRENCY sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-SEC_RET sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-SEC_RET_CUM sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-SEC_RET_LCUM sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-SEC_RET_DELTA sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-BLINE_DATE_OLD sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-PERCENTAGE_BASE sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-PERC_BASE_VIEW_MODE sy-vline 
WA_/SAPPCE/SDPC_RETENTION_STR-BASE_AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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