ABAP Select data from SAP table PC2N0 into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC2N0 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 PC2N0. 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 PC2N0 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_PC2N0 TYPE STANDARD TABLE OF PC2N0,
      WA_PC2N0 TYPE PC2N0,
      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: <PC2N0> TYPE PC2N0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC2N0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC2N0
  INTO TABLE IT_PC2N0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC2N0
*  INTO TABLE @DATA(IT_PC2N02).
*--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_PC2N0 INDEX 1 INTO DATA(WA_PC2N02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC2N0 ASSIGNING <PC2N0>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC2N0>-FPPER = 1.
<PC2N0>-FPERM = 1.
<PC2N0>-ASSGM = 1.
<PC2N0>-NIPER = 1.
<PC2N0>-NI_PERM = 1.
ENDLOOP.

LOOP AT IT_PC2N0 INTO WA_PC2N0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC2N0-LSFLG, sy-vline,
WA_PC2N0-LTLVR, sy-vline,
WA_PC2N0-NIPAY, sy-vline,
WA_PC2N0-NIPY_CFWDP, sy-vline,
WA_PC2N0-NIPY_CFWDC, sy-vline,
WA_PC2N0-NIPY_BFWD, sy-vline.
ENDLOOP. *Add any further fields from structure WA_PC2N0 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_PC2N0 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_PC2N0 INTO WA_PC2N0. *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_PC2N0_STR,
FPPER TYPE STRING,
FPERM TYPE STRING,
ASSGM TYPE STRING,
NIPER TYPE STRING,
NI_PERM TYPE STRING,
LSFLG TYPE STRING,
LTLVR TYPE STRING,
NIPAY TYPE STRING,
NIPY_CFWDP TYPE STRING,
NIPY_CFWDC TYPE STRING,
NIPY_BFWD TYPE STRING,
NIPY_TPO TYPE STRING,
NIPY_REG TYPE STRING,
NIPY_RCFP TYPE STRING,
NIPY_RCFC TYPE STRING,
NIPY_RBF TYPE STRING,
NIPY_RTPO TYPE STRING,
NIPY_IRREG TYPE STRING,
NIPY_ICFP TYPE STRING,
NIPY_ICFC TYPE STRING,
NIPY_IBF TYPE STRING,
NIPY_ITPO TYPE STRING,
REF_PERNR TYPE STRING,
MAINC TYPE STRING,
NIPE TYPE STRING,
MPT TYPE STRING,
TA_PERNR TYPE STRING,
ALEXC TYPE STRING,END OF T_EKKO_STR. DATA: WA_PC2N0_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_PC2N0_STR-FPPER sy-vline
WA_PC2N0_STR-FPERM sy-vline
WA_PC2N0_STR-ASSGM sy-vline
WA_PC2N0_STR-NIPER sy-vline
WA_PC2N0_STR-NI_PERM sy-vline
WA_PC2N0_STR-LSFLG sy-vline
WA_PC2N0_STR-LTLVR sy-vline
WA_PC2N0_STR-NIPAY sy-vline
WA_PC2N0_STR-NIPY_CFWDP sy-vline
WA_PC2N0_STR-NIPY_CFWDC sy-vline
WA_PC2N0_STR-NIPY_BFWD sy-vline
WA_PC2N0_STR-NIPY_TPO sy-vline
WA_PC2N0_STR-NIPY_REG sy-vline
WA_PC2N0_STR-NIPY_RCFP sy-vline
WA_PC2N0_STR-NIPY_RCFC sy-vline
WA_PC2N0_STR-NIPY_RBF sy-vline
WA_PC2N0_STR-NIPY_RTPO sy-vline
WA_PC2N0_STR-NIPY_IRREG sy-vline
WA_PC2N0_STR-NIPY_ICFP sy-vline
WA_PC2N0_STR-NIPY_ICFC sy-vline
WA_PC2N0_STR-NIPY_IBF sy-vline
WA_PC2N0_STR-NIPY_ITPO sy-vline
WA_PC2N0_STR-REF_PERNR sy-vline
WA_PC2N0_STR-MAINC sy-vline
WA_PC2N0_STR-NIPE sy-vline
WA_PC2N0_STR-MPT sy-vline
WA_PC2N0_STR-TA_PERNR sy-vline
WA_PC2N0_STR-ALEXC sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.