ABAP Select data from SAP table OIU_PR_WC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OIU_PR_WC
*  INTO TABLE @DATA(IT_OIU_PR_WC2).
*--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_OIU_PR_WC INDEX 1 INTO DATA(WA_OIU_PR_WC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OIU_PR_WC>-MANDT = 1.
<OIU_PR_WC>-WL_NO = 1.
<OIU_PR_WC>-WC_NO = 1.
<OIU_PR_WC>-API_WC_NO = 1.
<OIU_PR_WC>-NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OIU_PR_WC-SHTXT, sy-vline,
  WA_OIU_PR_WC-UOM_GRP, sy-vline,
  WA_OIU_PR_WC-DEV_PGM_NO, sy-vline,
  WA_OIU_PR_WC-LAT_NO, sy-vline,
  WA_OIU_PR_WC-LAT_DIR_CD, sy-vline,
  WA_OIU_PR_WC-LNG_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OIU_PR_WC 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_OIU_PR_WC 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_OIU_PR_WC INTO WA_OIU_PR_WC.


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

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

*Conversion exit OIUNM, internal->external for field NAME
CALL FUNCTION 'CONVERSION_EXIT_OIUNM_OUTPUT'
  EXPORTING
    input =                      WA_OIU_PR_WC-NAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIU_PR_WC-NAME.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit GJAHR, internal->external for field DOCYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_OIU_PR_WC-DOCYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_OIU_PR_WC-DOCYR.
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_OIU_PR_WC_STR, 
MANDT TYPE STRING,
WL_NO TYPE STRING,
WC_NO TYPE STRING,
API_WC_NO TYPE STRING,
NAME TYPE STRING,
SHTXT TYPE STRING,
UOM_GRP TYPE STRING,
DEV_PGM_NO TYPE STRING,
LAT_NO TYPE STRING,
LAT_DIR_CD TYPE STRING,
LNG_NO TYPE STRING,
LNG_DIR_CD TYPE STRING,
ELEV_DPH_U TYPE STRING,
PLG_BCK_DPTH TYPE STRING,
DATUM_DPTH TYPE STRING,
KB_ELEV TYPE STRING,
BASE_BHP_U TYPE STRING,
BASE_BHP TYPE STRING,
CNTRY_CD TYPE STRING,
PRI_GEO_LOC TYPE STRING,
SEC_GEO_LOC TYPE STRING,
RESRV TYPE STRING,
RESZN TYPE STRING,
FIELD TYPE STRING,
PF_NO TYPE STRING,
PUR_CD TYPE STRING,
LSE_LE_WL_FL TYPE STRING,
BEG_PRF_DPH TYPE STRING,
END_PRF_DPH TYPE STRING,
ALT_WC_KEY TYPE STRING,
LCL_WL_NO TYPE STRING,
WC_SET TYPE STRING,
DOCNR TYPE STRING,
DOCYR TYPE STRING,
OR1_OR_LVL_1_NO TYPE STRING,
OR2_OR_LVL_2_NO TYPE STRING,
OR3_OR_LVL_3_NO TYPE STRING,
OR4_OR_LVL_4_NO TYPE STRING,
OIU_CRUSER TYPE STRING,
OIU_TIMESTAMP TYPE STRING,
PCK_DPTH TYPE STRING,
API_SIDT TYPE STRING,
CBM_INDICATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OIU_PR_WC_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_OIU_PR_WC_STR-MANDT sy-vline 
WA_OIU_PR_WC_STR-WL_NO sy-vline 
WA_OIU_PR_WC_STR-WC_NO sy-vline 
WA_OIU_PR_WC_STR-API_WC_NO sy-vline 
WA_OIU_PR_WC_STR-NAME sy-vline 
WA_OIU_PR_WC_STR-SHTXT sy-vline 
WA_OIU_PR_WC_STR-UOM_GRP sy-vline 
WA_OIU_PR_WC_STR-DEV_PGM_NO sy-vline 
WA_OIU_PR_WC_STR-LAT_NO sy-vline 
WA_OIU_PR_WC_STR-LAT_DIR_CD sy-vline 
WA_OIU_PR_WC_STR-LNG_NO sy-vline 
WA_OIU_PR_WC_STR-LNG_DIR_CD sy-vline 
WA_OIU_PR_WC_STR-ELEV_DPH_U sy-vline 
WA_OIU_PR_WC_STR-PLG_BCK_DPTH sy-vline 
WA_OIU_PR_WC_STR-DATUM_DPTH sy-vline 
WA_OIU_PR_WC_STR-KB_ELEV sy-vline 
WA_OIU_PR_WC_STR-BASE_BHP_U sy-vline 
WA_OIU_PR_WC_STR-BASE_BHP sy-vline 
WA_OIU_PR_WC_STR-CNTRY_CD sy-vline 
WA_OIU_PR_WC_STR-PRI_GEO_LOC sy-vline 
WA_OIU_PR_WC_STR-SEC_GEO_LOC sy-vline 
WA_OIU_PR_WC_STR-RESRV sy-vline 
WA_OIU_PR_WC_STR-RESZN sy-vline 
WA_OIU_PR_WC_STR-FIELD sy-vline 
WA_OIU_PR_WC_STR-PF_NO sy-vline 
WA_OIU_PR_WC_STR-PUR_CD sy-vline 
WA_OIU_PR_WC_STR-LSE_LE_WL_FL sy-vline 
WA_OIU_PR_WC_STR-BEG_PRF_DPH sy-vline 
WA_OIU_PR_WC_STR-END_PRF_DPH sy-vline 
WA_OIU_PR_WC_STR-ALT_WC_KEY sy-vline 
WA_OIU_PR_WC_STR-LCL_WL_NO sy-vline 
WA_OIU_PR_WC_STR-WC_SET sy-vline 
WA_OIU_PR_WC_STR-DOCNR sy-vline 
WA_OIU_PR_WC_STR-DOCYR sy-vline 
WA_OIU_PR_WC_STR-OR1_OR_LVL_1_NO sy-vline 
WA_OIU_PR_WC_STR-OR2_OR_LVL_2_NO sy-vline 
WA_OIU_PR_WC_STR-OR3_OR_LVL_3_NO sy-vline 
WA_OIU_PR_WC_STR-OR4_OR_LVL_4_NO sy-vline 
WA_OIU_PR_WC_STR-OIU_CRUSER sy-vline 
WA_OIU_PR_WC_STR-OIU_TIMESTAMP sy-vline 
WA_OIU_PR_WC_STR-PCK_DPTH sy-vline 
WA_OIU_PR_WC_STR-API_SIDT sy-vline 
WA_OIU_PR_WC_STR-CBM_INDICATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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