ABAP Select data from SAP table QPCPD_CPLAN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QPCPD_CPLAN
*  INTO TABLE @DATA(IT_QPCPD_CPLAN2).
*--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_QPCPD_CPLAN INDEX 1 INTO DATA(WA_QPCPD_CPLAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QPCPD_CPLAN>-CLIENT = 1.
<QPCPD_CPLAN>-PLAN_GUID = 1.
<QPCPD_CPLAN>-PLAN_ID = 1.
<QPCPD_CPLAN>-MATNR = 1.
<QPCPD_CPLAN>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QPCPD_CPLAN-PART_NUMBER, sy-vline,
  WA_QPCPD_CPLAN-VENDOR_ID, sy-vline,
  WA_QPCPD_CPLAN-PLAN_TYPE, sy-vline,
  WA_QPCPD_CPLAN-SELECTION_DATE, sy-vline,
  WA_QPCPD_CPLAN-DOKNR, sy-vline,
  WA_QPCPD_CPLAN-DOKAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QPCPD_CPLAN 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_QPCPD_CPLAN 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_QPCPD_CPLAN INTO WA_QPCPD_CPLAN.


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

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

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

*Conversion exit TSTPS, internal->external for field RELEASED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_QPCPD_CPLAN-RELEASED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QPCPD_CPLAN-RELEASED_ON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHECK_TIMESTAMP
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_QPCPD_CPLAN-CHECK_TIMESTAMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QPCPD_CPLAN-CHECK_TIMESTAMP.
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_QPCPD_CPLAN_STR, 
CLIENT TYPE STRING,
PLAN_GUID TYPE STRING,
PLAN_ID TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
PART_NUMBER TYPE STRING,
VENDOR_ID TYPE STRING,
PLAN_TYPE TYPE STRING,
SELECTION_DATE TYPE STRING,
DOKNR TYPE STRING,
DOKAR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
RELEASED_BY TYPE STRING,
RELEASED_ON TYPE STRING,
CUST_REL_CON_ON TYPE STRING,
CUST_REL_QM_ON TYPE STRING,
CHECK_RESULT TYPE STRING,
CHECK_TIMESTAMP TYPE STRING,
PROJECT_ID TYPE STRING,
DELETED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QPCPD_CPLAN_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_QPCPD_CPLAN_STR-CLIENT sy-vline 
WA_QPCPD_CPLAN_STR-PLAN_GUID sy-vline 
WA_QPCPD_CPLAN_STR-PLAN_ID sy-vline 
WA_QPCPD_CPLAN_STR-MATNR sy-vline 
WA_QPCPD_CPLAN_STR-WERKS sy-vline 
WA_QPCPD_CPLAN_STR-PART_NUMBER sy-vline 
WA_QPCPD_CPLAN_STR-VENDOR_ID sy-vline 
WA_QPCPD_CPLAN_STR-PLAN_TYPE sy-vline 
WA_QPCPD_CPLAN_STR-SELECTION_DATE sy-vline 
WA_QPCPD_CPLAN_STR-DOKNR sy-vline 
WA_QPCPD_CPLAN_STR-DOKAR sy-vline 
WA_QPCPD_CPLAN_STR-DOKTL sy-vline 
WA_QPCPD_CPLAN_STR-DOKVR sy-vline 
WA_QPCPD_CPLAN_STR-CREATED_BY sy-vline 
WA_QPCPD_CPLAN_STR-CREATED_ON sy-vline 
WA_QPCPD_CPLAN_STR-CHANGED_BY sy-vline 
WA_QPCPD_CPLAN_STR-CHANGED_ON sy-vline 
WA_QPCPD_CPLAN_STR-RELEASED_BY sy-vline 
WA_QPCPD_CPLAN_STR-RELEASED_ON sy-vline 
WA_QPCPD_CPLAN_STR-CUST_REL_CON_ON sy-vline 
WA_QPCPD_CPLAN_STR-CUST_REL_QM_ON sy-vline 
WA_QPCPD_CPLAN_STR-CHECK_RESULT sy-vline 
WA_QPCPD_CPLAN_STR-CHECK_TIMESTAMP sy-vline 
WA_QPCPD_CPLAN_STR-PROJECT_ID sy-vline 
WA_QPCPD_CPLAN_STR-DELETED sy-vline      INTO ld_text SEPARATED BY SPACE.

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