ABAP Select data from SAP table J1B_NF_XML_B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J1B_NF_XML_B 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 J1B_NF_XML_B. 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 J1B_NF_XML_B 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_J1B_NF_XML_B TYPE STANDARD TABLE OF J1B_NF_XML_B,
      WA_J1B_NF_XML_B TYPE J1B_NF_XML_B,
      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: <J1B_NF_XML_B> TYPE J1B_NF_XML_B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J1B_NF_XML_B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J1B_NF_XML_B
  INTO TABLE IT_J1B_NF_XML_B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J1B_NF_XML_B
*  INTO TABLE @DATA(IT_J1B_NF_XML_B2).
*--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_J1B_NF_XML_B INDEX 1 INTO DATA(WA_J1B_NF_XML_B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J1B_NF_XML_B ASSIGNING <J1B_NF_XML_B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J1B_NF_XML_B>-CUF = 1.
<J1B_NF_XML_B>-CNF = 1.
<J1B_NF_XML_B>-NATOP = 1.
<J1B_NF_XML_B>-INDPAG = 1.
<J1B_NF_XML_B>-MOD = 1.

ENDLOOP.

LOOP AT IT_J1B_NF_XML_B INTO WA_J1B_NF_XML_B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J1B_NF_XML_B-SERIE, sy-vline,
  WA_J1B_NF_XML_B-NNF, sy-vline,
  WA_J1B_NF_XML_B-DEMI, sy-vline,
  WA_J1B_NF_XML_B-DSAIENT, sy-vline,
  WA_J1B_NF_XML_B-TPNF, sy-vline,
  WA_J1B_NF_XML_B-CMUNFG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J1B_NF_XML_B 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_J1B_NF_XML_B 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_J1B_NF_XML_B INTO WA_J1B_NF_XML_B.


*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_J1B_NF_XML_B_STR, 
CUF TYPE STRING,
CNF TYPE STRING,
NATOP TYPE STRING,
INDPAG TYPE STRING,
MOD TYPE STRING,
SERIE TYPE STRING,
NNF TYPE STRING,
DEMI TYPE STRING,
DSAIENT TYPE STRING,
TPNF TYPE STRING,
CMUNFG TYPE STRING,
TPIMP TYPE STRING,
TPEMIS TYPE STRING,
CDV TYPE STRING,
TPAMB TYPE STRING,
FINNFE TYPE STRING,
PROCEMI TYPE STRING,
VERPROC TYPE STRING,
ALTER_REGIO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J1B_NF_XML_B_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_J1B_NF_XML_B_STR-CUF sy-vline 
WA_J1B_NF_XML_B_STR-CNF sy-vline 
WA_J1B_NF_XML_B_STR-NATOP sy-vline 
WA_J1B_NF_XML_B_STR-INDPAG sy-vline 
WA_J1B_NF_XML_B_STR-MOD sy-vline 
WA_J1B_NF_XML_B_STR-SERIE sy-vline 
WA_J1B_NF_XML_B_STR-NNF sy-vline 
WA_J1B_NF_XML_B_STR-DEMI sy-vline 
WA_J1B_NF_XML_B_STR-DSAIENT sy-vline 
WA_J1B_NF_XML_B_STR-TPNF sy-vline 
WA_J1B_NF_XML_B_STR-CMUNFG sy-vline 
WA_J1B_NF_XML_B_STR-TPIMP sy-vline 
WA_J1B_NF_XML_B_STR-TPEMIS sy-vline 
WA_J1B_NF_XML_B_STR-CDV sy-vline 
WA_J1B_NF_XML_B_STR-TPAMB sy-vline 
WA_J1B_NF_XML_B_STR-FINNFE sy-vline 
WA_J1B_NF_XML_B_STR-PROCEMI sy-vline 
WA_J1B_NF_XML_B_STR-VERPROC sy-vline 
WA_J1B_NF_XML_B_STR-ALTER_REGIO sy-vline      INTO ld_text SEPARATED BY SPACE.

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