ABAP Select data from SAP table PIQDB_NL_IBGH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQDB_NL_IBGH
*  INTO TABLE @DATA(IT_PIQDB_NL_IBGH2).
*--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_PIQDB_NL_IBGH INDEX 1 INTO DATA(WA_PIQDB_NL_IBGH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQDB_NL_IBGH>-MANDT = 1.
<PIQDB_NL_IBGH>-OCWNO = 1.
<PIQDB_NL_IBGH>-REGYR = 1.
<PIQDB_NL_IBGH>-ECODE = 1.
<PIQDB_NL_IBGH>-EPHASE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQDB_NL_IBGH-SEQNR, sy-vline,
  WA_PIQDB_NL_IBGH-FORMREG, sy-vline,
  WA_PIQDB_NL_IBGH-BRINNO, sy-vline,
  WA_PIQDB_NL_IBGH-EFORM, sy-vline,
  WA_PIQDB_NL_IBGH-FMONTH, sy-vline,
  WA_PIQDB_NL_IBGH-TMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQDB_NL_IBGH 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_PIQDB_NL_IBGH 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_PIQDB_NL_IBGH INTO WA_PIQDB_NL_IBGH.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PIQDB_NL_IBGH_STR, 
MANDT TYPE STRING,
OCWNO TYPE STRING,
REGYR TYPE STRING,
ECODE TYPE STRING,
EPHASE TYPE STRING,
SEQNR TYPE STRING,
FORMREG TYPE STRING,
BRINNO TYPE STRING,
EFORM TYPE STRING,
FMONTH TYPE STRING,
TMONTH TYPE STRING,
TERMIN TYPE STRING,
FYEAR TYPE STRING,
DEFRAY TYPE STRING,
ERCODE TYPE STRING,
ERMNTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQDB_NL_IBGH_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_PIQDB_NL_IBGH_STR-MANDT sy-vline 
WA_PIQDB_NL_IBGH_STR-OCWNO sy-vline 
WA_PIQDB_NL_IBGH_STR-REGYR sy-vline 
WA_PIQDB_NL_IBGH_STR-ECODE sy-vline 
WA_PIQDB_NL_IBGH_STR-EPHASE sy-vline 
WA_PIQDB_NL_IBGH_STR-SEQNR sy-vline 
WA_PIQDB_NL_IBGH_STR-FORMREG sy-vline 
WA_PIQDB_NL_IBGH_STR-BRINNO sy-vline 
WA_PIQDB_NL_IBGH_STR-EFORM sy-vline 
WA_PIQDB_NL_IBGH_STR-FMONTH sy-vline 
WA_PIQDB_NL_IBGH_STR-TMONTH sy-vline 
WA_PIQDB_NL_IBGH_STR-TERMIN sy-vline 
WA_PIQDB_NL_IBGH_STR-FYEAR sy-vline 
WA_PIQDB_NL_IBGH_STR-DEFRAY sy-vline 
WA_PIQDB_NL_IBGH_STR-ERCODE sy-vline 
WA_PIQDB_NL_IBGH_STR-ERMNTH sy-vline      INTO ld_text SEPARATED BY SPACE.

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