ABAP Select data from SAP table IPPCAPRQMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPPCAPRQMT
*  INTO TABLE @DATA(IT_IPPCAPRQMT2).
*--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_IPPCAPRQMT INDEX 1 INTO DATA(WA_IPPCAPRQMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPPCAPRQMT>-MANDT = 1.
<IPPCAPRQMT>-CAPACITYREQUIREMENT = 1.
<IPPCAPRQMT>-CAPACITYREQUIREMENTORIGIN = 1.
<IPPCAPRQMT>-PLANNEDORDER = 1.
<IPPCAPRQMT>-ORDERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPPCAPRQMT-SALESOPERATIONSPLANNINGORDER, sy-vline,
  WA_IPPCAPRQMT-BILLOFOPERATIONSTYPE, sy-vline,
  WA_IPPCAPRQMT-BILLOFOPERATIONSGROUP, sy-vline,
  WA_IPPCAPRQMT-BILLOFOPERATIONS, sy-vline,
  WA_IPPCAPRQMT-SCHEDULINGTYPE, sy-vline,
  WA_IPPCAPRQMT-SCHEDULEDBASICSTARTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPPCAPRQMT 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_IPPCAPRQMT 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_IPPCAPRQMT INTO WA_IPPCAPRQMT.


*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_IPPCAPRQMT-PLANNEDORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPCAPRQMT-PLANNEDORDER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field BILLOFOPERATIONS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IPPCAPRQMT-BILLOFOPERATIONS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPPCAPRQMT-BILLOFOPERATIONS.
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_IPPCAPRQMT_STR, 
MANDT TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
PLANNEDORDER TYPE STRING,
ORDERID TYPE STRING,
SALESOPERATIONSPLANNINGORDER TYPE STRING,
BILLOFOPERATIONSTYPE TYPE STRING,
BILLOFOPERATIONSGROUP TYPE STRING,
BILLOFOPERATIONS TYPE STRING,
SCHEDULINGTYPE TYPE STRING,
SCHEDULEDBASICSTARTDATE TYPE STRING,
SCHEDULEDBASICSTARTTIME TYPE STRING,
SCHEDULEDBASICENDDATE TYPE STRING,
SCHEDULEDBASICENDTIME TYPE STRING,
LASTSCHEDULEDDATE TYPE STRING,
BOOEXPLOSIONDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPPCAPRQMT_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_IPPCAPRQMT_STR-MANDT sy-vline 
WA_IPPCAPRQMT_STR-CAPACITYREQUIREMENT sy-vline 
WA_IPPCAPRQMT_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_IPPCAPRQMT_STR-PLANNEDORDER sy-vline 
WA_IPPCAPRQMT_STR-ORDERID sy-vline 
WA_IPPCAPRQMT_STR-SALESOPERATIONSPLANNINGORDER sy-vline 
WA_IPPCAPRQMT_STR-BILLOFOPERATIONSTYPE sy-vline 
WA_IPPCAPRQMT_STR-BILLOFOPERATIONSGROUP sy-vline 
WA_IPPCAPRQMT_STR-BILLOFOPERATIONS sy-vline 
WA_IPPCAPRQMT_STR-SCHEDULINGTYPE sy-vline 
WA_IPPCAPRQMT_STR-SCHEDULEDBASICSTARTDATE sy-vline 
WA_IPPCAPRQMT_STR-SCHEDULEDBASICSTARTTIME sy-vline 
WA_IPPCAPRQMT_STR-SCHEDULEDBASICENDDATE sy-vline 
WA_IPPCAPRQMT_STR-SCHEDULEDBASICENDTIME sy-vline 
WA_IPPCAPRQMT_STR-LASTSCHEDULEDDATE sy-vline 
WA_IPPCAPRQMT_STR-BOOEXPLOSIONDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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