ABAP Select data from SAP table PCNCADELIQHIER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCNCADELIQHIER
*  INTO TABLE @DATA(IT_PCNCADELIQHIER2).
*--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_PCNCADELIQHIER INDEX 1 INTO DATA(WA_PCNCADELIQHIER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCNCADELIQHIER>-MANDT = 1.
<PCNCADELIQHIER>-PRODUCTHIERARCHY = 1.
<PCNCADELIQHIER>-HIERARCHYNODE = 1.
<PCNCADELIQHIER>-PARENTNODE = 1.
<PCNCADELIQHIER>-HIERARCHYNODELEVEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCNCADELIQHIER-LIQUIDITYITEM, sy-vline,
  WA_PCNCADELIQHIER-PRODUCTHIERARCHYNAME, sy-vline,
  WA_PCNCADELIQHIER-VALIDITYSTARTDATE, sy-vline,
  WA_PCNCADELIQHIER-VALIDITYENDDATE, sy-vline,
  WA_PCNCADELIQHIER-PARENTLIQUIDITYITEM, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_PCNCADELIQHIER 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_PCNCADELIQHIER 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_PCNCADELIQHIER INTO WA_PCNCADELIQHIER.


*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 LIQUIDITYITEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCNCADELIQHIER-LIQUIDITYITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCNCADELIQHIER-LIQUIDITYITEM.
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_PCNCADELIQHIER_STR, 
MANDT TYPE STRING,
PRODUCTHIERARCHY TYPE STRING,
HIERARCHYNODE TYPE STRING,
PARENTNODE TYPE STRING,
HIERARCHYNODELEVEL TYPE STRING,
LIQUIDITYITEM TYPE STRING,
PRODUCTHIERARCHYNAME TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
PARENTLIQUIDITYITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCNCADELIQHIER_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_PCNCADELIQHIER_STR-MANDT sy-vline 
WA_PCNCADELIQHIER_STR-PRODUCTHIERARCHY sy-vline 
WA_PCNCADELIQHIER_STR-HIERARCHYNODE sy-vline 
WA_PCNCADELIQHIER_STR-PARENTNODE sy-vline 
WA_PCNCADELIQHIER_STR-HIERARCHYNODELEVEL sy-vline 
WA_PCNCADELIQHIER_STR-LIQUIDITYITEM sy-vline 
WA_PCNCADELIQHIER_STR-PRODUCTHIERARCHYNAME sy-vline 
WA_PCNCADELIQHIER_STR-VALIDITYSTARTDATE sy-vline 
WA_PCNCADELIQHIER_STR-VALIDITYENDDATE sy-vline 
WA_PCNCADELIQHIER_STR-PARENTLIQUIDITYITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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