ABAP Select data from SAP table PREQORDUNION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PREQORDUNION
*  INTO TABLE @DATA(IT_PREQORDUNION2).
*--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_PREQORDUNION INDEX 1 INTO DATA(WA_PREQORDUNION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PREQORDUNION>-MANDT = 1.
<PREQORDUNION>-MAINTEXECUTIONOBJECT = 1.
<PREQORDUNION>-MAINTEXECUTIONOBJECTTYPE = 1.
<PREQORDUNION>-MAINTPRIORITYTYPE = 1.
<PREQORDUNION>-MAINTPRIORITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PREQORDUNION-TECHNICALOBJECT, sy-vline,
  WA_PREQORDUNION-TECHOBJISEQUIPORFUNCNLLOC, sy-vline,
  WA_PREQORDUNION-EQUIPMENT, sy-vline,
  WA_PREQORDUNION-FUNCTIONALLOCATION, sy-vline,
  WA_PREQORDUNION-MAINTENANCEITEM, sy-vline,
  WA_PREQORDUNION-MAINWORKCENTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PREQORDUNION 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_PREQORDUNION 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_PREQORDUNION INTO WA_PREQORDUNION.


*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 ALPHA, internal->external for field MAINTEXECUTIONOBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-MAINTEXECUTIONOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-MAINTEXECUTIONOBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUIPMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-EQUIPMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-EQUIPMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field FUNCTIONALLOCATION
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-FUNCTIONALLOCATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-FUNCTIONALLOCATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINTENANCEITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-MAINTENANCEITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-MAINTENANCEITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PERSONRESPONSIBLE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-PERSONRESPONSIBLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-PERSONRESPONSIBLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINTENANCENOTIFICATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-MAINTENANCENOTIFICATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-MAINTENANCENOTIFICATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MAINTENANCEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-MAINTENANCEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-MAINTENANCEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field ASSEMBLY
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-ASSEMBLY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-ASSEMBLY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RESPONSIBLECOSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-RESPONSIBLECOSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-RESPONSIBLECOSTCENTER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SETTLEMENTORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PREQORDUNION-SETTLEMENTORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PREQORDUNION-SETTLEMENTORDER.
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_PREQORDUNION_STR, 
MANDT TYPE STRING,
MAINTEXECUTIONOBJECT TYPE STRING,
MAINTEXECUTIONOBJECTTYPE TYPE STRING,
MAINTPRIORITYTYPE TYPE STRING,
MAINTPRIORITY TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
EQUIPMENT TYPE STRING,
FUNCTIONALLOCATION TYPE STRING,
MAINTENANCEITEM TYPE STRING,
MAINWORKCENTER TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
MAINTENANCEWORKCENTERPLANT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,
MALFUNCTIONEFFECT TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
REQUIREDSTARTDATE TYPE STRING,
REQUIREDENDDATE TYPE STRING,
LATESTACCEPTABLECOMPLETIONDATE TYPE STRING,
PERSONRESPONSIBLE TYPE STRING,
REPORTEDBYUSER TYPE STRING,
REPORTERFULLNAME TYPE STRING,
MAINTENANCEPROCESSINGPHASE TYPE STRING,
MAINTENANCENOTIFICATION TYPE STRING,
MAINTENANCEORDER TYPE STRING,
MAINTENANCEACTIVITYTYPE TYPE STRING,
ASSEMBLY TYPE STRING,
SERIALNUMBER TYPE STRING,
NOTIFICATIONTYPE TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
OPERATIONSYSTEMCONDITION TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
ORDERTYPE TYPE STRING,
NOTIFICATIONHASLONGTEXT TYPE STRING,
CURRENCY TYPE STRING,
DOCUMENTTEXT TYPE STRING,
MAINTENANCEORDERINTERNALID TYPE STRING,
NOTIFICATIONCREATIONDATE TYPE STRING,
MAINTNOTIFICATIONCODE TYPE STRING,
MAINTNOTIFICATIONCODEGROUP TYPE STRING,
MAINTNOTIFICATIONCATALOG TYPE STRING,
MAINTENANCEOBJECTISDOWN TYPE STRING,
MALFUNCTIONSTARTDATE TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
ASSETLOCATION TYPE STRING,
LOCATIONNAME TYPE STRING,
PLANTSECTION TYPE STRING,
SETTLEMENTORDER TYPE STRING,
MAINTOBJECTFREEDEFINEDATTRIB TYPE STRING,
ABCINDICATOR TYPE STRING,
MAINTNOTIFINTERNALID TYPE STRING,
MAINTENANCEORDEROBJECTLIST TYPE STRING,
MAINTORDPROCESSPHASECODE TYPE STRING,
MAINTORDPROCESSSUBPHASECODE TYPE STRING,
FUNCTIONALLOCATIONLABELNAME TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PREQORDUNION_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_PREQORDUNION_STR-MANDT sy-vline 
WA_PREQORDUNION_STR-MAINTEXECUTIONOBJECT sy-vline 
WA_PREQORDUNION_STR-MAINTEXECUTIONOBJECTTYPE sy-vline 
WA_PREQORDUNION_STR-MAINTPRIORITYTYPE sy-vline 
WA_PREQORDUNION_STR-MAINTPRIORITY sy-vline 
WA_PREQORDUNION_STR-TECHNICALOBJECT sy-vline 
WA_PREQORDUNION_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_PREQORDUNION_STR-EQUIPMENT sy-vline 
WA_PREQORDUNION_STR-FUNCTIONALLOCATION sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEITEM sy-vline 
WA_PREQORDUNION_STR-MAINWORKCENTER sy-vline 
WA_PREQORDUNION_STR-WORKCENTERTYPECODE sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEWORKCENTERPLANT sy-vline 
WA_PREQORDUNION_STR-WORKCENTERINTERNALID sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_PREQORDUNION_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline 
WA_PREQORDUNION_STR-MALFUNCTIONEFFECT sy-vline 
WA_PREQORDUNION_STR-CREATIONDATE sy-vline 
WA_PREQORDUNION_STR-CREATEDBYUSER sy-vline 
WA_PREQORDUNION_STR-REQUIREDSTARTDATE sy-vline 
WA_PREQORDUNION_STR-REQUIREDENDDATE sy-vline 
WA_PREQORDUNION_STR-LATESTACCEPTABLECOMPLETIONDATE sy-vline 
WA_PREQORDUNION_STR-PERSONRESPONSIBLE sy-vline 
WA_PREQORDUNION_STR-REPORTEDBYUSER sy-vline 
WA_PREQORDUNION_STR-REPORTERFULLNAME sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEPROCESSINGPHASE sy-vline 
WA_PREQORDUNION_STR-MAINTENANCENOTIFICATION sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEORDER sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEACTIVITYTYPE sy-vline 
WA_PREQORDUNION_STR-ASSEMBLY sy-vline 
WA_PREQORDUNION_STR-SERIALNUMBER sy-vline 
WA_PREQORDUNION_STR-NOTIFICATIONTYPE sy-vline 
WA_PREQORDUNION_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_PREQORDUNION_STR-OPERATIONSYSTEMCONDITION sy-vline 
WA_PREQORDUNION_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_PREQORDUNION_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_PREQORDUNION_STR-ORDERTYPE sy-vline 
WA_PREQORDUNION_STR-NOTIFICATIONHASLONGTEXT sy-vline 
WA_PREQORDUNION_STR-CURRENCY sy-vline 
WA_PREQORDUNION_STR-DOCUMENTTEXT sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEORDERINTERNALID sy-vline 
WA_PREQORDUNION_STR-NOTIFICATIONCREATIONDATE sy-vline 
WA_PREQORDUNION_STR-MAINTNOTIFICATIONCODE sy-vline 
WA_PREQORDUNION_STR-MAINTNOTIFICATIONCODEGROUP sy-vline 
WA_PREQORDUNION_STR-MAINTNOTIFICATIONCATALOG sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEOBJECTISDOWN sy-vline 
WA_PREQORDUNION_STR-MALFUNCTIONSTARTDATE sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEPLANT sy-vline 
WA_PREQORDUNION_STR-ASSETLOCATION sy-vline 
WA_PREQORDUNION_STR-LOCATIONNAME sy-vline 
WA_PREQORDUNION_STR-PLANTSECTION sy-vline 
WA_PREQORDUNION_STR-SETTLEMENTORDER sy-vline 
WA_PREQORDUNION_STR-MAINTOBJECTFREEDEFINEDATTRIB sy-vline 
WA_PREQORDUNION_STR-ABCINDICATOR sy-vline 
WA_PREQORDUNION_STR-MAINTNOTIFINTERNALID sy-vline 
WA_PREQORDUNION_STR-MAINTENANCEORDEROBJECTLIST sy-vline 
WA_PREQORDUNION_STR-MAINTORDPROCESSPHASECODE sy-vline 
WA_PREQORDUNION_STR-MAINTORDPROCESSSUBPHASECODE sy-vline 
WA_PREQORDUNION_STR-FUNCTIONALLOCATIONLABELNAME sy-vline 
WA_PREQORDUNION_STR-LASTCHANGEDATETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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