ABAP Select data from SAP table REDY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REDY
*  INTO TABLE @DATA(IT_REDY2).
*--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_REDY INDEX 1 INTO DATA(WA_REDY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REDY>-MCOBJ = 1.
<REDY>-POSPOS = 1.
<REDY>-WAERS1 = 1.
<REDY>-WAERS2 = 1.
<REDY>-HWAER1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REDY-HWAER2, sy-vline,
  WA_REDY-PAYBUDGET, sy-vline,
  WA_REDY-COMBUDGET, sy-vline,
  WA_REDY-MAXBLPOS, sy-vline,
  WA_REDY-PAGEBLPOS, sy-vline,
  WA_REDY-BATEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REDY 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_REDY 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_REDY INTO WA_REDY.


*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_REDY_STR, 
MCOBJ TYPE STRING,
POSPOS TYPE STRING,
WAERS1 TYPE STRING,
WAERS2 TYPE STRING,
HWAER1 TYPE STRING,
HWAER2 TYPE STRING,
PAYBUDGET TYPE STRING,
COMBUDGET TYPE STRING,
MAXBLPOS TYPE STRING,
PAGEBLPOS TYPE STRING,
BATEXT TYPE STRING,
BUKRSTXT TYPE STRING,
FIKRSTXT TYPE STRING,
KOKRSTXT TYPE STRING,
LIFNRTXT TYPE STRING,
LNRZATXT TYPE STRING,
KUNNRTXT TYPE STRING,
APPROVALSTATE TYPE STRING,
BLSTAT TYPE STRING,
ADDITIV_CONS_LOG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REDY_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_REDY_STR-MCOBJ sy-vline 
WA_REDY_STR-POSPOS sy-vline 
WA_REDY_STR-WAERS1 sy-vline 
WA_REDY_STR-WAERS2 sy-vline 
WA_REDY_STR-HWAER1 sy-vline 
WA_REDY_STR-HWAER2 sy-vline 
WA_REDY_STR-PAYBUDGET sy-vline 
WA_REDY_STR-COMBUDGET sy-vline 
WA_REDY_STR-MAXBLPOS sy-vline 
WA_REDY_STR-PAGEBLPOS sy-vline 
WA_REDY_STR-BATEXT sy-vline 
WA_REDY_STR-BUKRSTXT sy-vline 
WA_REDY_STR-FIKRSTXT sy-vline 
WA_REDY_STR-KOKRSTXT sy-vline 
WA_REDY_STR-LIFNRTXT sy-vline 
WA_REDY_STR-LNRZATXT sy-vline 
WA_REDY_STR-KUNNRTXT sy-vline 
WA_REDY_STR-APPROVALSTATE sy-vline 
WA_REDY_STR-BLSTAT sy-vline 
WA_REDY_STR-ADDITIV_CONS_LOG sy-vline      INTO ld_text SEPARATED BY SPACE.

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