ABAP Select data from SAP table APLNDORDCAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APLNDORDCAP
*  INTO TABLE @DATA(IT_APLNDORDCAP2).
*--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_APLNDORDCAP INDEX 1 INTO DATA(WA_APLNDORDCAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APLNDORDCAP>-MANDT = 1.
<APLNDORDCAP>-CAPACITYREQUIREMENT = 1.
<APLNDORDCAP>-CAPACITYREQUIREMENTITEM = 1.
<APLNDORDCAP>-CAPACITYRQMTITEMCAPACITY = 1.
<APLNDORDCAP>-PLANNEDORDER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APLNDORDCAP-PLANNEDORDERTYPE, sy-vline,
  WA_APLNDORDCAP-SEQUENCE, sy-vline,
  WA_APLNDORDCAP-OPERATION, sy-vline,
  WA_APLNDORDCAP-SUBOPERATION, sy-vline,
  WA_APLNDORDCAP-WORKCENTER, sy-vline,
  WA_APLNDORDCAP-CAPACITYCATEGORYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APLNDORDCAP 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_APLNDORDCAP 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_APLNDORDCAP INTO WA_APLNDORDCAP.


*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 PLANNEDORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_APLNDORDCAP-PLANNEDORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APLNDORDCAP-PLANNEDORDER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field OPERATION
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_APLNDORDCAP-OPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APLNDORDCAP-OPERATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field SUBOPERATION
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_APLNDORDCAP-SUBOPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APLNDORDCAP-SUBOPERATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CAPACITYREQUIREMENTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_APLNDORDCAP-CAPACITYREQUIREMENTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APLNDORDCAP-CAPACITYREQUIREMENTUNIT.
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_APLNDORDCAP_STR, 
MANDT TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
CAPACITYREQUIREMENTITEM TYPE STRING,
CAPACITYRQMTITEMCAPACITY TYPE STRING,
PLANNEDORDER TYPE STRING,
PLANNEDORDERTYPE TYPE STRING,
SEQUENCE TYPE STRING,
OPERATION TYPE STRING,
SUBOPERATION TYPE STRING,
WORKCENTER TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITY TYPE STRING,
MRPCONTROLLER TYPE STRING,
MRPPLANT TYPE STRING,
OPERATIONLATESTSTARTDATE TYPE STRING,
OPERATIONLATESTSTARTTIME TYPE STRING,
OPERATIONLATESTENDDATE TYPE STRING,
OPERATIONLATESTENDTIME TYPE STRING,
OPERATIONEARLIESTSTARTDATE TYPE STRING,
OPERATIONEARLIESTSTARTTIME TYPE STRING,
OPERATIONEARLIESTENDDATE TYPE STRING,
OPERATIONEARLIESTENDTIME TYPE STRING,
OPLTSTSCHEDLDPROCGSTRTDTE TYPE STRING,
OPLTSTSCHEDLDPROCGSTRTTME TYPE STRING,
OPLTSTSCHEDLDTRDWNSTRTDTE TYPE STRING,
OPLTSTSCHEDLDTRDWNSTRTTME TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
CAPACITYREQUIREMENTUNIT TYPE STRING,
UNITOFMEASUREISOCODE TYPE STRING,
SCHEDULEDCAPREQOPSEGSETUPDURN TYPE STRING,
REMAININGCAPREQOPSEGSETUPDURN TYPE STRING,
SCHEDULEDCAPREQOPSEGPROCGDURN TYPE STRING,
REMAININGCAPREQOPSEGPROCGDURN TYPE STRING,
SCHEDULEDCAPREQOPSEGTRDWNDURN TYPE STRING,
REMAININGCAPREQOPSEGTRDWNDURN TYPE STRING,
WRKCNTRHASLEADINGCAP TYPE STRING,
OPERATIONTEXT TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APLNDORDCAP_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_APLNDORDCAP_STR-MANDT sy-vline 
WA_APLNDORDCAP_STR-CAPACITYREQUIREMENT sy-vline 
WA_APLNDORDCAP_STR-CAPACITYREQUIREMENTITEM sy-vline 
WA_APLNDORDCAP_STR-CAPACITYRQMTITEMCAPACITY sy-vline 
WA_APLNDORDCAP_STR-PLANNEDORDER sy-vline 
WA_APLNDORDCAP_STR-PLANNEDORDERTYPE sy-vline 
WA_APLNDORDCAP_STR-SEQUENCE sy-vline 
WA_APLNDORDCAP_STR-OPERATION sy-vline 
WA_APLNDORDCAP_STR-SUBOPERATION sy-vline 
WA_APLNDORDCAP_STR-WORKCENTER sy-vline 
WA_APLNDORDCAP_STR-CAPACITYCATEGORYCODE sy-vline 
WA_APLNDORDCAP_STR-CAPACITY sy-vline 
WA_APLNDORDCAP_STR-MRPCONTROLLER sy-vline 
WA_APLNDORDCAP_STR-MRPPLANT sy-vline 
WA_APLNDORDCAP_STR-OPERATIONLATESTSTARTDATE sy-vline 
WA_APLNDORDCAP_STR-OPERATIONLATESTSTARTTIME sy-vline 
WA_APLNDORDCAP_STR-OPERATIONLATESTENDDATE sy-vline 
WA_APLNDORDCAP_STR-OPERATIONLATESTENDTIME sy-vline 
WA_APLNDORDCAP_STR-OPERATIONEARLIESTSTARTDATE sy-vline 
WA_APLNDORDCAP_STR-OPERATIONEARLIESTSTARTTIME sy-vline 
WA_APLNDORDCAP_STR-OPERATIONEARLIESTENDDATE sy-vline 
WA_APLNDORDCAP_STR-OPERATIONEARLIESTENDTIME sy-vline 
WA_APLNDORDCAP_STR-OPLTSTSCHEDLDPROCGSTRTDTE sy-vline 
WA_APLNDORDCAP_STR-OPLTSTSCHEDLDPROCGSTRTTME sy-vline 
WA_APLNDORDCAP_STR-OPLTSTSCHEDLDTRDWNSTRTDTE sy-vline 
WA_APLNDORDCAP_STR-OPLTSTSCHEDLDTRDWNSTRTTME sy-vline 
WA_APLNDORDCAP_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_APLNDORDCAP_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_APLNDORDCAP_STR-CAPACITYREQUIREMENTUNIT sy-vline 
WA_APLNDORDCAP_STR-UNITOFMEASUREISOCODE sy-vline 
WA_APLNDORDCAP_STR-SCHEDULEDCAPREQOPSEGSETUPDURN sy-vline 
WA_APLNDORDCAP_STR-REMAININGCAPREQOPSEGSETUPDURN sy-vline 
WA_APLNDORDCAP_STR-SCHEDULEDCAPREQOPSEGPROCGDURN sy-vline 
WA_APLNDORDCAP_STR-REMAININGCAPREQOPSEGPROCGDURN sy-vline 
WA_APLNDORDCAP_STR-SCHEDULEDCAPREQOPSEGTRDWNDURN sy-vline 
WA_APLNDORDCAP_STR-REMAININGCAPREQOPSEGTRDWNDURN sy-vline 
WA_APLNDORDCAP_STR-WRKCNTRHASLEADINGCAP sy-vline 
WA_APLNDORDCAP_STR-OPERATIONTEXT sy-vline 
WA_APLNDORDCAP_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.