ABAP Select data from SAP table T7UAT9 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7UAT9 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 T7UAT9. 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 T7UAT9 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_T7UAT9 TYPE STANDARD TABLE OF T7UAT9,
      WA_T7UAT9 TYPE T7UAT9,
      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: <T7UAT9> TYPE T7UAT9.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7UAT9.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7UAT9
  INTO TABLE IT_T7UAT9.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7UAT9
*  INTO TABLE @DATA(IT_T7UAT92).
*--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_T7UAT9 INDEX 1 INTO DATA(WA_T7UAT92).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7UAT9 ASSIGNING <T7UAT9>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7UAT9>-MANDT = 1.
<T7UAT9>-TAXNUM = 1.
<T7UAT9>-ENDDA = 1.
<T7UAT9>-LAND = 1.
<T7UAT9>-PRIRR = 1.

ENDLOOP.

LOOP AT IT_T7UAT9 INTO WA_T7UAT9.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7UAT9-KEYNO, sy-vline,
  WA_T7UAT9-BEGDA, sy-vline,
  WA_T7UAT9-VALE01, sy-vline,
  WA_T7UAT9-PROC01, sy-vline,
  WA_T7UAT9-VALS01, sy-vline,
  WA_T7UAT9-VALE02, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7UAT9 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_T7UAT9 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_T7UAT9 INTO WA_T7UAT9.


*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_T7UAT9_STR, 
MANDT TYPE STRING,
TAXNUM TYPE STRING,
ENDDA TYPE STRING,
LAND TYPE STRING,
PRIRR TYPE STRING,
KEYNO TYPE STRING,
BEGDA TYPE STRING,
VALE01 TYPE STRING,
PROC01 TYPE STRING,
VALS01 TYPE STRING,
VALE02 TYPE STRING,
PROC02 TYPE STRING,
VALS02 TYPE STRING,
VALE03 TYPE STRING,
PROC03 TYPE STRING,
VALS03 TYPE STRING,
VALE04 TYPE STRING,
PROC04 TYPE STRING,
VALS04 TYPE STRING,
VALE05 TYPE STRING,
PROC05 TYPE STRING,
VALS05 TYPE STRING,
VALE06 TYPE STRING,
PROC06 TYPE STRING,
VALS06 TYPE STRING,
VALE07 TYPE STRING,
PROC07 TYPE STRING,
VALS07 TYPE STRING,
VALE08 TYPE STRING,
PROC08 TYPE STRING,
VALS08 TYPE STRING,
VALE09 TYPE STRING,
PROC09 TYPE STRING,
VALS09 TYPE STRING,
VALE10 TYPE STRING,
PROC10 TYPE STRING,
VALS10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7UAT9_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_T7UAT9_STR-MANDT sy-vline 
WA_T7UAT9_STR-TAXNUM sy-vline 
WA_T7UAT9_STR-ENDDA sy-vline 
WA_T7UAT9_STR-LAND sy-vline 
WA_T7UAT9_STR-PRIRR sy-vline 
WA_T7UAT9_STR-KEYNO sy-vline 
WA_T7UAT9_STR-BEGDA sy-vline 
WA_T7UAT9_STR-VALE01 sy-vline 
WA_T7UAT9_STR-PROC01 sy-vline 
WA_T7UAT9_STR-VALS01 sy-vline 
WA_T7UAT9_STR-VALE02 sy-vline 
WA_T7UAT9_STR-PROC02 sy-vline 
WA_T7UAT9_STR-VALS02 sy-vline 
WA_T7UAT9_STR-VALE03 sy-vline 
WA_T7UAT9_STR-PROC03 sy-vline 
WA_T7UAT9_STR-VALS03 sy-vline 
WA_T7UAT9_STR-VALE04 sy-vline 
WA_T7UAT9_STR-PROC04 sy-vline 
WA_T7UAT9_STR-VALS04 sy-vline 
WA_T7UAT9_STR-VALE05 sy-vline 
WA_T7UAT9_STR-PROC05 sy-vline 
WA_T7UAT9_STR-VALS05 sy-vline 
WA_T7UAT9_STR-VALE06 sy-vline 
WA_T7UAT9_STR-PROC06 sy-vline 
WA_T7UAT9_STR-VALS06 sy-vline 
WA_T7UAT9_STR-VALE07 sy-vline 
WA_T7UAT9_STR-PROC07 sy-vline 
WA_T7UAT9_STR-VALS07 sy-vline 
WA_T7UAT9_STR-VALE08 sy-vline 
WA_T7UAT9_STR-PROC08 sy-vline 
WA_T7UAT9_STR-VALS08 sy-vline 
WA_T7UAT9_STR-VALE09 sy-vline 
WA_T7UAT9_STR-PROC09 sy-vline 
WA_T7UAT9_STR-VALS09 sy-vline 
WA_T7UAT9_STR-VALE10 sy-vline 
WA_T7UAT9_STR-PROC10 sy-vline 
WA_T7UAT9_STR-VALS10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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