ABAP Select data from SAP table CTE_S_PO_ALLOCATION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTE_S_PO_ALLOCATION
*  INTO TABLE @DATA(IT_CTE_S_PO_ALLOCATION2).
*--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_CTE_S_PO_ALLOCATION INDEX 1 INTO DATA(WA_CTE_S_PO_ALLOCATION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTE_S_PO_ALLOCATION>-AMOUNT = 1.
<CTE_S_PO_ALLOCATION>-CUSTOM1 = 1.
<CTE_S_PO_ALLOCATION>-CUSTOM2 = 1.
<CTE_S_PO_ALLOCATION>-CUSTOM3 = 1.
<CTE_S_PO_ALLOCATION>-CUSTOM4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTE_S_PO_ALLOCATION-CUSTOM5, sy-vline,
  WA_CTE_S_PO_ALLOCATION-CUSTOM6, sy-vline,
  WA_CTE_S_PO_ALLOCATION-CUSTOM7, sy-vline,
  WA_CTE_S_PO_ALLOCATION-CUSTOM8, sy-vline,
  WA_CTE_S_PO_ALLOCATION-CUSTOM9, sy-vline,
  WA_CTE_S_PO_ALLOCATION-CUSTOM10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTE_S_PO_ALLOCATION 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_CTE_S_PO_ALLOCATION 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_CTE_S_PO_ALLOCATION INTO WA_CTE_S_PO_ALLOCATION.


*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_CTE_S_PO_ALLOCATION_STR, 
AMOUNT TYPE STRING,
CUSTOM1 TYPE STRING,
CUSTOM2 TYPE STRING,
CUSTOM3 TYPE STRING,
CUSTOM4 TYPE STRING,
CUSTOM5 TYPE STRING,
CUSTOM6 TYPE STRING,
CUSTOM7 TYPE STRING,
CUSTOM8 TYPE STRING,
CUSTOM9 TYPE STRING,
CUSTOM10 TYPE STRING,
CUSTOM11 TYPE STRING,
CUSTOM12 TYPE STRING,
CUSTOM13 TYPE STRING,
CUSTOM14 TYPE STRING,
CUSTOM15 TYPE STRING,
CUSTOM16 TYPE STRING,
CUSTOM17 TYPE STRING,
CUSTOM18 TYPE STRING,
CUSTOM19 TYPE STRING,
CUSTOM20 TYPE STRING,
GROSS_AMOUNT TYPE STRING,
PERCENTAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTE_S_PO_ALLOCATION_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_CTE_S_PO_ALLOCATION_STR-AMOUNT sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM1 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM2 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM3 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM4 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM5 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM6 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM7 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM8 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM9 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM10 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM11 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM12 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM13 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM14 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM15 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM16 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM17 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM18 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM19 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-CUSTOM20 sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-GROSS_AMOUNT sy-vline 
WA_CTE_S_PO_ALLOCATION_STR-PERCENTAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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