ABAP Select data from SAP table U_13101 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 U_13101 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 U_13101. 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 U_13101 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_U_13101 TYPE STANDARD TABLE OF U_13101,
      WA_U_13101 TYPE U_13101,
      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: <U_13101> TYPE U_13101.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_13101.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_13101
  INTO TABLE IT_U_13101.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_13101
*  INTO TABLE @DATA(IT_U_131012).
*--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_U_13101 INDEX 1 INTO DATA(WA_U_131012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_13101 ASSIGNING <U_13101>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_13101>-MANDT = 1.
<U_13101>-POSNR = 1.
<U_13101>-GJAHR = 1.
<U_13101>-POSID = 1.
<U_13101>-ABJHR = 1.

ENDLOOP.

LOOP AT IT_U_13101 INTO WA_U_13101.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_13101-BIJHR, sy-vline,
  WA_U_13101-PRNAM, sy-vline,
  WA_U_13101-PPRIO, sy-vline,
  WA_U_13101-IZWEK, sy-vline,
  WA_U_13101-OBJNR, sy-vline,
  WA_U_13101-VERNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_13101 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_U_13101 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_U_13101 INTO WA_U_13101.


*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.

*Conversion exit POSNR, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_POSNR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit POSID, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_POSID_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ABJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-ABJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-ABJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BIJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-BIJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-BIJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit POSNR, internal->external for field PARNR
CALL FUNCTION 'CONVERSION_EXIT_POSNR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-PARNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit POSNR, internal->external for field LEFNR
CALL FUNCTION 'CONVERSION_EXIT_POSNR_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-LEFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-LEFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-LOGSYV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-LOGSYV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_13101-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_13101-RCOMP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_U_13101_STR, 
MANDT TYPE STRING,
POSNR TYPE STRING,
GJAHR TYPE STRING,
POSID TYPE STRING,
ABJHR TYPE STRING,
BIJHR TYPE STRING,
PRNAM TYPE STRING,
PPRIO TYPE STRING,
IZWEK TYPE STRING,
OBJNR TYPE STRING,
VERNR TYPE STRING,
VERNA TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
ERGSO TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
WERKS TYPE STRING,
PRCTR TYPE STRING,
BEBER TYPE STRING,
TPLNR TYPE STRING,
XPLAN TYPE STRING,
XBUDG TYPE STRING,
PARNR TYPE STRING,
LEFNR TYPE STRING,
XAKTB TYPE STRING,
LOGSYV TYPE STRING,
RCOMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_13101_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_U_13101_STR-MANDT sy-vline 
WA_U_13101_STR-POSNR sy-vline 
WA_U_13101_STR-GJAHR sy-vline 
WA_U_13101_STR-POSID sy-vline 
WA_U_13101_STR-ABJHR sy-vline 
WA_U_13101_STR-BIJHR sy-vline 
WA_U_13101_STR-PRNAM sy-vline 
WA_U_13101_STR-PPRIO sy-vline 
WA_U_13101_STR-IZWEK sy-vline 
WA_U_13101_STR-OBJNR sy-vline 
WA_U_13101_STR-VERNR sy-vline 
WA_U_13101_STR-VERNA sy-vline 
WA_U_13101_STR-ERNAM sy-vline 
WA_U_13101_STR-ERDAT sy-vline 
WA_U_13101_STR-AENAM sy-vline 
WA_U_13101_STR-AEDAT sy-vline 
WA_U_13101_STR-ERGSO sy-vline 
WA_U_13101_STR-BUKRS sy-vline 
WA_U_13101_STR-GSBER sy-vline 
WA_U_13101_STR-KOKRS sy-vline 
WA_U_13101_STR-KOSTL sy-vline 
WA_U_13101_STR-WERKS sy-vline 
WA_U_13101_STR-PRCTR sy-vline 
WA_U_13101_STR-BEBER sy-vline 
WA_U_13101_STR-TPLNR sy-vline 
WA_U_13101_STR-XPLAN sy-vline 
WA_U_13101_STR-XBUDG sy-vline 
WA_U_13101_STR-PARNR sy-vline 
WA_U_13101_STR-LEFNR sy-vline 
WA_U_13101_STR-XAKTB sy-vline 
WA_U_13101_STR-LOGSYV sy-vline 
WA_U_13101_STR-RCOMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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