ABAP Select data from SAP table U_15179 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15179 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_15179. 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_15179 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_15179 TYPE STANDARD TABLE OF U_15179,
      WA_U_15179 TYPE U_15179,
      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_15179> TYPE U_15179.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15179.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15179
  INTO TABLE IT_U_15179.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15179
*  INTO TABLE @DATA(IT_U_151792).
*--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_15179 INDEX 1 INTO DATA(WA_U_151792).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15179 ASSIGNING <U_15179>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15179>-MANDT = 1.
<U_15179>-RSNUM = 1.
<U_15179>-RSPOS = 1.
<U_15179>-RSART = 1.
<U_15179>-WERKS = 1.

ENDLOOP.

LOOP AT IT_U_15179 INTO WA_U_15179.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15179-MATNR, sy-vline,
  WA_U_15179-AUFNR, sy-vline,
  WA_U_15179-VORNR, sy-vline,
  WA_U_15179-RSSTA, sy-vline,
  WA_U_15179-XLOEK, sy-vline,
  WA_U_15179-LGORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15179 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_15179 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_15179 INTO WA_U_15179.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field BAUGR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-BAUGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-BAUGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_15179-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15179-AENNR.
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_15179_STR, 
MANDT TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
RSSTA TYPE STRING,
XLOEK TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
BDTER TYPE STRING,
BDMNG TYPE STRING,
MEINS TYPE STRING,
SHKZG TYPE STRING,
BAUGR TYPE STRING,
SERNR TYPE STRING,
BWART TYPE STRING,
SAKNR TYPE STRING,
POSTP TYPE STRING,
POSNR TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLKN TYPE STRING,
STPOZ TYPE STRING,
SANKA TYPE STRING,
ALPOS TYPE STRING,
AENNR TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
SBTER TYPE STRING,
SCHGT TYPE STRING,
DBSKZ TYPE STRING,
OBJNR TYPE STRING,
BERKZ TYPE STRING,
LGPLA TYPE STRING,
KZKUP TYPE STRING,
BDZTP TYPE STRING,
ALPST TYPE STRING,
KZAUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15179_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_15179_STR-MANDT sy-vline 
WA_U_15179_STR-RSNUM sy-vline 
WA_U_15179_STR-RSPOS sy-vline 
WA_U_15179_STR-RSART sy-vline 
WA_U_15179_STR-WERKS sy-vline 
WA_U_15179_STR-MATNR sy-vline 
WA_U_15179_STR-AUFNR sy-vline 
WA_U_15179_STR-VORNR sy-vline 
WA_U_15179_STR-RSSTA sy-vline 
WA_U_15179_STR-XLOEK sy-vline 
WA_U_15179_STR-LGORT sy-vline 
WA_U_15179_STR-CHARG sy-vline 
WA_U_15179_STR-BDTER sy-vline 
WA_U_15179_STR-BDMNG sy-vline 
WA_U_15179_STR-MEINS sy-vline 
WA_U_15179_STR-SHKZG sy-vline 
WA_U_15179_STR-BAUGR sy-vline 
WA_U_15179_STR-SERNR sy-vline 
WA_U_15179_STR-BWART sy-vline 
WA_U_15179_STR-SAKNR sy-vline 
WA_U_15179_STR-POSTP sy-vline 
WA_U_15179_STR-POSNR sy-vline 
WA_U_15179_STR-STLTY sy-vline 
WA_U_15179_STR-STLNR sy-vline 
WA_U_15179_STR-STLKN sy-vline 
WA_U_15179_STR-STPOZ sy-vline 
WA_U_15179_STR-SANKA sy-vline 
WA_U_15179_STR-ALPOS sy-vline 
WA_U_15179_STR-AENNR sy-vline 
WA_U_15179_STR-UMREZ sy-vline 
WA_U_15179_STR-UMREN sy-vline 
WA_U_15179_STR-SBTER sy-vline 
WA_U_15179_STR-SCHGT sy-vline 
WA_U_15179_STR-DBSKZ sy-vline 
WA_U_15179_STR-OBJNR sy-vline 
WA_U_15179_STR-BERKZ sy-vline 
WA_U_15179_STR-LGPLA sy-vline 
WA_U_15179_STR-KZKUP sy-vline 
WA_U_15179_STR-BDZTP sy-vline 
WA_U_15179_STR-ALPST sy-vline 
WA_U_15179_STR-KZAUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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