ABAP Select data from SAP table P2RG_NIC 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 P2RG_NIC 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 P2RG_NIC. 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 P2RG_NIC 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_P2RG_NIC TYPE STANDARD TABLE OF P2RG_NIC,
      WA_P2RG_NIC TYPE P2RG_NIC,
      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: <P2RG_NIC> TYPE P2RG_NIC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P2RG_NIC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P2RG_NIC
  INTO TABLE IT_P2RG_NIC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P2RG_NIC
*  INTO TABLE @DATA(IT_P2RG_NIC2).
*--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_P2RG_NIC INDEX 1 INTO DATA(WA_P2RG_NIC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P2RG_NIC ASSIGNING <P2RG_NIC>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<P2RG_NIC>-MANDT = 1.
<P2RG_NIC>-DCT_PERNR = 1.
<P2RG_NIC>-DCT_SEQNR = 1.
<P2RG_NIC>-DCT_ROWID = 1.
<P2RG_NIC>-NICAT = 1.
ENDLOOP.

LOOP AT IT_P2RG_NIC INTO WA_P2RG_NIC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P2RG_NIC-CTOUT, sy-vline,
WA_P2RG_NIC-ASSGM, sy-vline,
WA_P2RG_NIC-PRRTY, sy-vline,
WA_P2RG_NIC-APPS, sy-vline,
WA_P2RG_NIC-DIRFB, sy-vline,
WA_P2RG_NIC-DIRRP, sy-vline.
ENDLOOP. *Add any further fields from structure WA_P2RG_NIC 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_P2RG_NIC 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_P2RG_NIC INTO WA_P2RG_NIC. *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_P2RG_NIC_STR,
MANDT TYPE STRING,
DCT_PERNR TYPE STRING,
DCT_SEQNR TYPE STRING,
DCT_ROWID TYPE STRING,
NICAT TYPE STRING,
CTOUT TYPE STRING,
ASSGM TYPE STRING,
PRRTY TYPE STRING,
APPS TYPE STRING,
DIRFB TYPE STRING,
DIRRP TYPE STRING,
DIRPW TYPE STRING,
LSFLG TYPE STRING,
LTLVR TYPE STRING,
WK6FL TYPE STRING,
NIPAY TYPE STRING,
NIBASE TYPE STRING,
AMTTOLEL TYPE STRING,
AMTLELEET TYPE STRING,
AMTEETERT TYPE STRING,
AMTERTUEL TYPE STRING,
AMTFROMUEL TYPE STRING,
EENIC TYPE STRING,
ERNIC TYPE STRING,
EENIR TYPE STRING,
ERNIR TYPE STRING,
ADJUST TYPE STRING,
MPT TYPE STRING,
AMTERTUAP TYPE STRING,
TA_PERNR TYPE STRING,
ORG_NICAT TYPE STRING,
AMTFROMUST TYPE STRING,
AMTFROAUST TYPE STRING,
PAYDT TYPE STRING,END OF T_EKKO_STR. DATA: WA_P2RG_NIC_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_P2RG_NIC_STR-MANDT sy-vline
WA_P2RG_NIC_STR-DCT_PERNR sy-vline
WA_P2RG_NIC_STR-DCT_SEQNR sy-vline
WA_P2RG_NIC_STR-DCT_ROWID sy-vline
WA_P2RG_NIC_STR-NICAT sy-vline
WA_P2RG_NIC_STR-CTOUT sy-vline
WA_P2RG_NIC_STR-ASSGM sy-vline
WA_P2RG_NIC_STR-PRRTY sy-vline
WA_P2RG_NIC_STR-APPS sy-vline
WA_P2RG_NIC_STR-DIRFB sy-vline
WA_P2RG_NIC_STR-DIRRP sy-vline
WA_P2RG_NIC_STR-DIRPW sy-vline
WA_P2RG_NIC_STR-LSFLG sy-vline
WA_P2RG_NIC_STR-LTLVR sy-vline
WA_P2RG_NIC_STR-WK6FL sy-vline
WA_P2RG_NIC_STR-NIPAY sy-vline
WA_P2RG_NIC_STR-NIBASE sy-vline
WA_P2RG_NIC_STR-AMTTOLEL sy-vline
WA_P2RG_NIC_STR-AMTLELEET sy-vline
WA_P2RG_NIC_STR-AMTEETERT sy-vline
WA_P2RG_NIC_STR-AMTERTUEL sy-vline
WA_P2RG_NIC_STR-AMTFROMUEL sy-vline
WA_P2RG_NIC_STR-EENIC sy-vline
WA_P2RG_NIC_STR-ERNIC sy-vline
WA_P2RG_NIC_STR-EENIR sy-vline
WA_P2RG_NIC_STR-ERNIR sy-vline
WA_P2RG_NIC_STR-ADJUST sy-vline
WA_P2RG_NIC_STR-MPT sy-vline
WA_P2RG_NIC_STR-AMTERTUAP sy-vline
WA_P2RG_NIC_STR-TA_PERNR sy-vline
WA_P2RG_NIC_STR-ORG_NICAT sy-vline
WA_P2RG_NIC_STR-AMTFROMUST sy-vline
WA_P2RG_NIC_STR-AMTFROAUST sy-vline
WA_P2RG_NIC_STR-PAYDT sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.