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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CTM_DRS_PREQ_STR
*  INTO TABLE @DATA(IT_/SAPAPO/CTM_DRS_PREQ_STR2).
*--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/CTM_DRS_PREQ_STR INDEX 1 INTO DATA(WA_/SAPAPO/CTM_DRS_PREQ_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CTM_DRS_PREQ_STR>-STATUS = 1.
</SAPAPO/CTM_DRS_PREQ_STR>-SNP_GROUPNO = 1.
</SAPAPO/CTM_DRS_PREQ_STR>-PREQNO = 1.
</SAPAPO/CTM_DRS_PREQ_STR>-ITEM = 1.
</SAPAPO/CTM_DRS_PREQ_STR>-LINE_NO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CTM_DRS_PREQ_STR-ATPCAT, sy-vline,
  WA_/SAPAPO/CTM_DRS_PREQ_STR-CATNAME, sy-vline,
  WA_/SAPAPO/CTM_DRS_PREQ_STR-LOCFR, sy-vline,
  WA_/SAPAPO/CTM_DRS_PREQ_STR-MATNR, sy-vline,
  WA_/SAPAPO/CTM_DRS_PREQ_STR-LOCTO, sy-vline,
  WA_/SAPAPO/CTM_DRS_PREQ_STR-QTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CTM_DRS_PREQ_STR 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/CTM_DRS_PREQ_STR 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/CTM_DRS_PREQ_STR INTO WA_/SAPAPO/CTM_DRS_PREQ_STR.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CTM_DRS_PREQ_STR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CTM_DRS_PREQ_STR-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CTM_DRS_PREQ_STR-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CTM_DRS_PREQ_STR-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_/SAPAPO/CTM_DRS_PREQ_STR_STR, 
STATUS TYPE STRING,
SNP_GROUPNO TYPE STRING,
PREQNO TYPE STRING,
ITEM TYPE STRING,
LINE_NO TYPE STRING,
ATPCAT TYPE STRING,
CATNAME TYPE STRING,
LOCFR TYPE STRING,
MATNR TYPE STRING,
LOCTO TYPE STRING,
QTY TYPE STRING,
UOM TYPE STRING,
DSORDNO TYPE STRING,
TOTALQTY TYPE STRING,
AVAILDAT TYPE STRING,
AVAILTIM TYPE STRING,
REQDAT TYPE STRING,
REQTIM TYPE STRING,
LATESTDAT TYPE STRING,
LATESTTIM TYPE STRING,
UDELTOL TYPE STRING,
ODELTOL TYPE STRING,
ORDERID TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CTM_DRS_PREQ_STR_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/CTM_DRS_PREQ_STR_STR-STATUS sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-SNP_GROUPNO sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-PREQNO sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-ITEM sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LINE_NO sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-ATPCAT sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-CATNAME sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LOCFR sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-MATNR sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LOCTO sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-QTY sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-UOM sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-DSORDNO sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-TOTALQTY sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-AVAILDAT sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-AVAILTIM sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-REQDAT sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-REQTIM sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LATESTDAT sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LATESTTIM sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-UDELTOL sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-ODELTOL sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-ORDERID sy-vline 
WA_/SAPAPO/CTM_DRS_PREQ_STR_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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