ABAP Select data from SAP table PRELCHKMON into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRELCHKMON
*  INTO TABLE @DATA(IT_PRELCHKMON2).
*--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_PRELCHKMON INDEX 1 INTO DATA(WA_PRELCHKMON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRELCHKMON>-MANDT = 1.
<PRELCHKMON>-ARUNRELEASECHECKRUNUUID = 1.
<PRELCHKMON>-ARUNRELEASECHECKVARIANTUUID = 1.
<PRELCHKMON>-SUPASSGMTEXECUTIONMODE = 1.
<PRELCHKMON>-ARUNRELEASECHECKVARIANTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRELCHKMON-SUPASSIGNRUNISSIMULATION, sy-vline,
  WA_PRELCHKMON-ARUNRELEASECHECKGROUPNAME, sy-vline,
  WA_PRELCHKMON-STARTEDBYUSER, sy-vline,
  WA_PRELCHKMON-ARUNRELCHKSTARTUTCDATETIME, sy-vline,
  WA_PRELCHKMON-LOGHANDLE, sy-vline,
  WA_PRELCHKMON-UXFCALLOCATIONRUNSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRELCHKMON 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_PRELCHKMON 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_PRELCHKMON INTO WA_PRELCHKMON.


*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_PRELCHKMON_STR, 
MANDT TYPE STRING,
ARUNRELEASECHECKRUNUUID TYPE STRING,
ARUNRELEASECHECKVARIANTUUID TYPE STRING,
SUPASSGMTEXECUTIONMODE TYPE STRING,
ARUNRELEASECHECKVARIANTNAME TYPE STRING,
SUPASSIGNRUNISSIMULATION TYPE STRING,
ARUNRELEASECHECKGROUPNAME TYPE STRING,
STARTEDBYUSER TYPE STRING,
ARUNRELCHKSTARTUTCDATETIME TYPE STRING,
LOGHANDLE TYPE STRING,
UXFCALLOCATIONRUNSTATUS TYPE STRING,
UXFCSERVICEORDERSTATUS TYPE STRING,
ORDERQUANTITY TYPE STRING,
CONFIRMEDRQMTQTYINBASEUNIT TYPE STRING,
DELIVEREDQUANTITYINBASEUNIT TYPE STRING,
ASSIGNEDQUANTITYINBASEUNIT TYPE STRING,
FIXEDQUANTITYINBASEUNIT TYPE STRING,
ONHOLDQUANTITYINBASEUNIT TYPE STRING,
SUPASSGMTRESERVEDQTYINBASEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRELCHKMON_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_PRELCHKMON_STR-MANDT sy-vline 
WA_PRELCHKMON_STR-ARUNRELEASECHECKRUNUUID sy-vline 
WA_PRELCHKMON_STR-ARUNRELEASECHECKVARIANTUUID sy-vline 
WA_PRELCHKMON_STR-SUPASSGMTEXECUTIONMODE sy-vline 
WA_PRELCHKMON_STR-ARUNRELEASECHECKVARIANTNAME sy-vline 
WA_PRELCHKMON_STR-SUPASSIGNRUNISSIMULATION sy-vline 
WA_PRELCHKMON_STR-ARUNRELEASECHECKGROUPNAME sy-vline 
WA_PRELCHKMON_STR-STARTEDBYUSER sy-vline 
WA_PRELCHKMON_STR-ARUNRELCHKSTARTUTCDATETIME sy-vline 
WA_PRELCHKMON_STR-LOGHANDLE sy-vline 
WA_PRELCHKMON_STR-UXFCALLOCATIONRUNSTATUS sy-vline 
WA_PRELCHKMON_STR-UXFCSERVICEORDERSTATUS sy-vline 
WA_PRELCHKMON_STR-ORDERQUANTITY sy-vline 
WA_PRELCHKMON_STR-CONFIRMEDRQMTQTYINBASEUNIT sy-vline 
WA_PRELCHKMON_STR-DELIVEREDQUANTITYINBASEUNIT sy-vline 
WA_PRELCHKMON_STR-ASSIGNEDQUANTITYINBASEUNIT sy-vline 
WA_PRELCHKMON_STR-FIXEDQUANTITYINBASEUNIT sy-vline 
WA_PRELCHKMON_STR-ONHOLDQUANTITYINBASEUNIT sy-vline 
WA_PRELCHKMON_STR-SUPASSGMTRESERVEDQTYINBASEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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