ABAP Select data from SAP table PJP_FORM_PERIOD_NAI 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 PJP_FORM_PERIOD_NAI 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 PJP_FORM_PERIOD_NAI. 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 PJP_FORM_PERIOD_NAI 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_PJP_FORM_PERIOD_NAI TYPE STANDARD TABLE OF PJP_FORM_PERIOD_NAI,
      WA_PJP_FORM_PERIOD_NAI TYPE PJP_FORM_PERIOD_NAI,
      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: <PJP_FORM_PERIOD_NAI> TYPE PJP_FORM_PERIOD_NAI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PJP_FORM_PERIOD_NAI
*  INTO TABLE @DATA(IT_PJP_FORM_PERIOD_NAI2).
*--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_PJP_FORM_PERIOD_NAI INDEX 1 INTO DATA(WA_PJP_FORM_PERIOD_NAI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PJP_FORM_PERIOD_NAI>-ONE_BEG = 1.
<PJP_FORM_PERIOD_NAI>-ONE_END = 1.
<PJP_FORM_PERIOD_NAI>-TWO_BEG = 1.
<PJP_FORM_PERIOD_NAI>-TWO_END = 1.
<PJP_FORM_PERIOD_NAI>-THREE_BEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PJP_FORM_PERIOD_NAI-THREE_END, sy-vline,
  WA_PJP_FORM_PERIOD_NAI-FOUR_BEG, sy-vline,
  WA_PJP_FORM_PERIOD_NAI-FOUR_END, sy-vline,
  WA_PJP_FORM_PERIOD_NAI-FIVE_BEG, sy-vline,
  WA_PJP_FORM_PERIOD_NAI-FIVE_END, sy-vline,
  WA_PJP_FORM_PERIOD_NAI-SIX_BEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PJP_FORM_PERIOD_NAI 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_PJP_FORM_PERIOD_NAI 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_PJP_FORM_PERIOD_NAI INTO WA_PJP_FORM_PERIOD_NAI.


*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_PJP_FORM_PERIOD_NAI_STR, 
ONE_BEG TYPE STRING,
ONE_END TYPE STRING,
TWO_BEG TYPE STRING,
TWO_END TYPE STRING,
THREE_BEG TYPE STRING,
THREE_END TYPE STRING,
FOUR_BEG TYPE STRING,
FOUR_END TYPE STRING,
FIVE_BEG TYPE STRING,
FIVE_END TYPE STRING,
SIX_BEG TYPE STRING,
SIX_END TYPE STRING,
SEVEN_BEG TYPE STRING,
SEVEN_END TYPE STRING,
EIGHT_BEG TYPE STRING,
EIGHT_END TYPE STRING,
NINE_BEG TYPE STRING,
NINE_END TYPE STRING,
TEN_BEG TYPE STRING,
TEN_END TYPE STRING,
ELEVEN_BEG TYPE STRING,
ELEVEN_END TYPE STRING,
TWELVE_BEG TYPE STRING,
TWELVE_END TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PJP_FORM_PERIOD_NAI_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_PJP_FORM_PERIOD_NAI_STR-ONE_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-ONE_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TWO_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TWO_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-THREE_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-THREE_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-FOUR_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-FOUR_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-FIVE_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-FIVE_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-SIX_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-SIX_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-SEVEN_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-SEVEN_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-EIGHT_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-EIGHT_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-NINE_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-NINE_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TEN_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TEN_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-ELEVEN_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-ELEVEN_END sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TWELVE_BEG sy-vline 
WA_PJP_FORM_PERIOD_NAI_STR-TWELVE_END sy-vline      INTO ld_text SEPARATED BY SPACE.

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