ABAP Select data from SAP table PTW_FORM_NHIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTW_FORM_NHIC
*  INTO TABLE @DATA(IT_PTW_FORM_NHIC2).
*--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_PTW_FORM_NHIC INDEX 1 INTO DATA(WA_PTW_FORM_NHIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTW_FORM_NHIC>-H0 = 1.
<PTW_FORM_NHIC>-H1 = 1.
<PTW_FORM_NHIC>-H2 = 1.
<PTW_FORM_NHIC>-H3 = 1.
<PTW_FORM_NHIC>-H4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTW_FORM_NHIC-H5, sy-vline,
  WA_PTW_FORM_NHIC-H6, sy-vline,
  WA_PTW_FORM_NHIC-H7, sy-vline,
  WA_PTW_FORM_NHIC-C00, sy-vline,
  WA_PTW_FORM_NHIC-C01, sy-vline,
  WA_PTW_FORM_NHIC-C02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTW_FORM_NHIC 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_PTW_FORM_NHIC 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_PTW_FORM_NHIC INTO WA_PTW_FORM_NHIC.


*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_PTW_FORM_NHIC_STR, 
H0 TYPE STRING,
H1 TYPE STRING,
H2 TYPE STRING,
H3 TYPE STRING,
H4 TYPE STRING,
H5 TYPE STRING,
H6 TYPE STRING,
H7 TYPE STRING,
C00 TYPE STRING,
C01 TYPE STRING,
C02 TYPE STRING,
C03 TYPE STRING,
C04 TYPE STRING,
C05 TYPE STRING,
C30 TYPE STRING,
C31 TYPE STRING,
C32 TYPE STRING,
C33 TYPE STRING,
C34 TYPE STRING,
C35 TYPE STRING,
C36 TYPE STRING,
C37 TYPE STRING,
F0 TYPE STRING,
F1 TYPE STRING,
F2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTW_FORM_NHIC_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_PTW_FORM_NHIC_STR-H0 sy-vline 
WA_PTW_FORM_NHIC_STR-H1 sy-vline 
WA_PTW_FORM_NHIC_STR-H2 sy-vline 
WA_PTW_FORM_NHIC_STR-H3 sy-vline 
WA_PTW_FORM_NHIC_STR-H4 sy-vline 
WA_PTW_FORM_NHIC_STR-H5 sy-vline 
WA_PTW_FORM_NHIC_STR-H6 sy-vline 
WA_PTW_FORM_NHIC_STR-H7 sy-vline 
WA_PTW_FORM_NHIC_STR-C00 sy-vline 
WA_PTW_FORM_NHIC_STR-C01 sy-vline 
WA_PTW_FORM_NHIC_STR-C02 sy-vline 
WA_PTW_FORM_NHIC_STR-C03 sy-vline 
WA_PTW_FORM_NHIC_STR-C04 sy-vline 
WA_PTW_FORM_NHIC_STR-C05 sy-vline 
WA_PTW_FORM_NHIC_STR-C30 sy-vline 
WA_PTW_FORM_NHIC_STR-C31 sy-vline 
WA_PTW_FORM_NHIC_STR-C32 sy-vline 
WA_PTW_FORM_NHIC_STR-C33 sy-vline 
WA_PTW_FORM_NHIC_STR-C34 sy-vline 
WA_PTW_FORM_NHIC_STR-C35 sy-vline 
WA_PTW_FORM_NHIC_STR-C36 sy-vline 
WA_PTW_FORM_NHIC_STR-C37 sy-vline 
WA_PTW_FORM_NHIC_STR-F0 sy-vline 
WA_PTW_FORM_NHIC_STR-F1 sy-vline 
WA_PTW_FORM_NHIC_STR-F2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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