ABAP Select data from SAP table /AIN/UI_DOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /AIN/UI_DOC 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 /AIN/UI_DOC. 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 /AIN/UI_DOC 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_/AIN/UI_DOC TYPE STANDARD TABLE OF /AIN/UI_DOC,
      WA_/AIN/UI_DOC TYPE /AIN/UI_DOC,
      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: </AIN/UI_DOC> TYPE /AIN/UI_DOC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /AIN/UI_DOC
  INTO TABLE IT_/AIN/UI_DOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /AIN/UI_DOC
*  INTO TABLE @DATA(IT_/AIN/UI_DOC2).
*--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_/AIN/UI_DOC INDEX 1 INTO DATA(WA_/AIN/UI_DOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/AIN/UI_DOC ASSIGNING </AIN/UI_DOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</AIN/UI_DOC>-DOC_GUID = 1.
</AIN/UI_DOC>-DOC_ID = 1.
</AIN/UI_DOC>-REF_DOC_ID = 1.
</AIN/UI_DOC>-DOC_TYPE = 1.
</AIN/UI_DOC>-ACTION_TYPE = 1.

ENDLOOP.

LOOP AT IT_/AIN/UI_DOC INTO WA_/AIN/UI_DOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/AIN/UI_DOC-DUE_DATE, sy-vline,
  WA_/AIN/UI_DOC-EXPIRY_DATE, sy-vline,
  WA_/AIN/UI_DOC-BU_PARTNER, sy-vline,
  WA_/AIN/UI_DOC-SHIP_TO_PARTY, sy-vline,
  WA_/AIN/UI_DOC-LOFSYS, sy-vline,
  WA_/AIN/UI_DOC-DOBJ_GUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/AIN/UI_DOC 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_/AIN/UI_DOC 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_/AIN/UI_DOC INTO WA_/AIN/UI_DOC.


*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 TSTPS, internal->external for field EXPIRY_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/AIN/UI_DOC-EXPIRY_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIN/UI_DOC-EXPIRY_DATE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit TSTPS, internal->external for field ACT_EXEC_TIME
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/AIN/UI_DOC-ACT_EXEC_TIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIN/UI_DOC-ACT_EXEC_TIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GTIN1, internal->external for field GTIN
CALL FUNCTION 'CONVERSION_EXIT_GTIN1_OUTPUT'
  EXPORTING
    input =                      WA_/AIN/UI_DOC-GTIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIN/UI_DOC-GTIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/AIN/UI_DOC-UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/AIN/UI_DOC-UOM.
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_/AIN/UI_DOC_STR, 
DOC_GUID TYPE STRING,
DOC_ID TYPE STRING,
REF_DOC_ID TYPE STRING,
DOC_TYPE TYPE STRING,
ACTION_TYPE TYPE STRING,
DUE_DATE TYPE STRING,
EXPIRY_DATE TYPE STRING,
BU_PARTNER TYPE STRING,
SHIP_TO_PARTY TYPE STRING,
LOFSYS TYPE STRING,
DOBJ_GUID TYPE STRING,
DOBJ_ID TYPE STRING,
DOBJ_TYPE TYPE STRING,
TOP_DOBJ_GUID TYPE STRING,
PRT_DOBJ_GUID TYPE STRING,
STATUS TYPE STRING,
ACT_EXEC_TIME TYPE STRING,
SEQUENCE TYPE STRING,
GTIN TYPE STRING,
GTIN_VAR TYPE STRING,
EPC1 TYPE STRING,
EPC2 TYPE STRING,
DOC_ITM_GUID TYPE STRING,
DOC_ITM_ID TYPE STRING,
PROD_GUID TYPE STRING,
EXP_QUANTITY TYPE STRING,
ACT_QUANTITY TYPE STRING,
UOM TYPE STRING,
EXP_SRC_LOC_GUID TYPE STRING,
EXP_DST_LOC_GUID TYPE STRING,
ACT_SRC_LOC_GUID TYPE STRING,
ACT_DST_LOC_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/AIN/UI_DOC_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_/AIN/UI_DOC_STR-DOC_GUID sy-vline 
WA_/AIN/UI_DOC_STR-DOC_ID sy-vline 
WA_/AIN/UI_DOC_STR-REF_DOC_ID sy-vline 
WA_/AIN/UI_DOC_STR-DOC_TYPE sy-vline 
WA_/AIN/UI_DOC_STR-ACTION_TYPE sy-vline 
WA_/AIN/UI_DOC_STR-DUE_DATE sy-vline 
WA_/AIN/UI_DOC_STR-EXPIRY_DATE sy-vline 
WA_/AIN/UI_DOC_STR-BU_PARTNER sy-vline 
WA_/AIN/UI_DOC_STR-SHIP_TO_PARTY sy-vline 
WA_/AIN/UI_DOC_STR-LOFSYS sy-vline 
WA_/AIN/UI_DOC_STR-DOBJ_GUID sy-vline 
WA_/AIN/UI_DOC_STR-DOBJ_ID sy-vline 
WA_/AIN/UI_DOC_STR-DOBJ_TYPE sy-vline 
WA_/AIN/UI_DOC_STR-TOP_DOBJ_GUID sy-vline 
WA_/AIN/UI_DOC_STR-PRT_DOBJ_GUID sy-vline 
WA_/AIN/UI_DOC_STR-STATUS sy-vline 
WA_/AIN/UI_DOC_STR-ACT_EXEC_TIME sy-vline 
WA_/AIN/UI_DOC_STR-SEQUENCE sy-vline 
WA_/AIN/UI_DOC_STR-GTIN sy-vline 
WA_/AIN/UI_DOC_STR-GTIN_VAR sy-vline 
WA_/AIN/UI_DOC_STR-EPC1 sy-vline 
WA_/AIN/UI_DOC_STR-EPC2 sy-vline 
WA_/AIN/UI_DOC_STR-DOC_ITM_GUID sy-vline 
WA_/AIN/UI_DOC_STR-DOC_ITM_ID sy-vline 
WA_/AIN/UI_DOC_STR-PROD_GUID sy-vline 
WA_/AIN/UI_DOC_STR-EXP_QUANTITY sy-vline 
WA_/AIN/UI_DOC_STR-ACT_QUANTITY sy-vline 
WA_/AIN/UI_DOC_STR-UOM sy-vline 
WA_/AIN/UI_DOC_STR-EXP_SRC_LOC_GUID sy-vline 
WA_/AIN/UI_DOC_STR-EXP_DST_LOC_GUID sy-vline 
WA_/AIN/UI_DOC_STR-ACT_SRC_LOC_GUID sy-vline 
WA_/AIN/UI_DOC_STR-ACT_DST_LOC_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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