ABAP Select data from SAP table /SAPAPO/CIF_DELTA3_COMP_RSV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/CIF_DELTA3_COMP_RSV 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 /SAPAPO/CIF_DELTA3_COMP_RSV. 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 /SAPAPO/CIF_DELTA3_COMP_RSV 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_/SAPAPO/CIF_DELTA3_COMP_RSV TYPE STANDARD TABLE OF /SAPAPO/CIF_DELTA3_COMP_RSV,
      WA_/SAPAPO/CIF_DELTA3_COMP_RSV TYPE /SAPAPO/CIF_DELTA3_COMP_RSV,
      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: </SAPAPO/CIF_DELTA3_COMP_RSV> TYPE /SAPAPO/CIF_DELTA3_COMP_RSV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/CIF_DELTA3_COMP_RSV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/CIF_DELTA3_COMP_RSV
  INTO TABLE IT_/SAPAPO/CIF_DELTA3_COMP_RSV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CIF_DELTA3_COMP_RSV
*  INTO TABLE @DATA(IT_/SAPAPO/CIF_DELTA3_COMP_RSV2).
*--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_/SAPAPO/CIF_DELTA3_COMP_RSV INDEX 1 INTO DATA(WA_/SAPAPO/CIF_DELTA3_COMP_RSV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/CIF_DELTA3_COMP_RSV ASSIGNING </SAPAPO/CIF_DELTA3_COMP_RSV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CIF_DELTA3_COMP_RSV>-ORDNR = 1.
</SAPAPO/CIF_DELTA3_COMP_RSV>-RSNUM = 1.
</SAPAPO/CIF_DELTA3_COMP_RSV>-RSPOS = 1.
</SAPAPO/CIF_DELTA3_COMP_RSV>-OBJECTTYPE = 1.
</SAPAPO/CIF_DELTA3_COMP_RSV>-ORDERGUID = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/CIF_DELTA3_COMP_RSV INTO WA_/SAPAPO/CIF_DELTA3_COMP_RSV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CIF_DELTA3_COMP_RSV-METHOD, sy-vline,
  WA_/SAPAPO/CIF_DELTA3_COMP_RSV-MATERIAL, sy-vline,
  WA_/SAPAPO/CIF_DELTA3_COMP_RSV-LOCATION, sy-vline,
  WA_/SAPAPO/CIF_DELTA3_COMP_RSV-STORAGELOCATION, sy-vline,
  WA_/SAPAPO/CIF_DELTA3_COMP_RSV-REQMT_QUAN, sy-vline,
  WA_/SAPAPO/CIF_DELTA3_COMP_RSV-REM_QUAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CIF_DELTA3_COMP_RSV 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_/SAPAPO/CIF_DELTA3_COMP_RSV 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_/SAPAPO/CIF_DELTA3_COMP_RSV INTO WA_/SAPAPO/CIF_DELTA3_COMP_RSV.


*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 CUNIT, internal->external for field UNITOFMEAS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CIF_DELTA3_COMP_RSV-UNITOFMEAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CIF_DELTA3_COMP_RSV-UNITOFMEAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field REQ_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CIF_DELTA3_COMP_RSV-REQ_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CIF_DELTA3_COMP_RSV-REQ_DATE.
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_/SAPAPO/CIF_DELTA3_COMP_RSV_STR, 
ORDNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
OBJECTTYPE TYPE STRING,
ORDERGUID TYPE STRING,
METHOD TYPE STRING,
MATERIAL TYPE STRING,
LOCATION TYPE STRING,
STORAGELOCATION TYPE STRING,
REQMT_QUAN TYPE STRING,
REM_QUAN TYPE STRING,
CONF_QUANTITY TYPE STRING,
UNITOFMEAS TYPE STRING,
REQ_DATE TYPE STRING,
ATPCAT TYPE STRING,
TRANSPLANT TYPE STRING,
TRANSSLOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CIF_DELTA3_COMP_RSV_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_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-ORDNR sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-RSNUM sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-RSPOS sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-OBJECTTYPE sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-ORDERGUID sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-METHOD sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-MATERIAL sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-LOCATION sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-STORAGELOCATION sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-REQMT_QUAN sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-REM_QUAN sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-CONF_QUANTITY sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-UNITOFMEAS sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-REQ_DATE sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-ATPCAT sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-TRANSPLANT sy-vline 
WA_/SAPAPO/CIF_DELTA3_COMP_RSV_STR-TRANSSLOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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