ABAP Select data from SAP table IREADJTERMBASIC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREADJTERMBASIC
*  INTO TABLE @DATA(IT_IREADJTERMBASIC2).
*--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_IREADJTERMBASIC INDEX 1 INTO DATA(WA_IREADJTERMBASIC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREADJTERMBASIC>-MANDT = 1.
<IREADJTERMBASIC>-INTERNALREALESTATENUMBER = 1.
<IREADJTERMBASIC>-RETERMNUMBER = 1.
<IREADJTERMBASIC>-READJUSTMENTRULE = 1.
<IREADJTERMBASIC>-READJUSTMENTELEMENTARYRULE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREADJTERMBASIC-VALIDITYSTARTDATE, sy-vline,
  WA_IREADJTERMBASIC-VALIDITYENDDATE, sy-vline,
  WA_IREADJTERMBASIC-READJUSTMENTISINDIVGLOBPARAM, sy-vline,
  WA_IREADJTERMBASIC-READJUSTMENTISINDIVSPCFCPARAM, sy-vline,
  WA_IREADJTERMBASIC-REIDENTIFICATIONKEY, sy-vline,
  WA_IREADJTERMBASIC-RESTATUSOBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREADJTERMBASIC 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_IREADJTERMBASIC 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_IREADJTERMBASIC INTO WA_IREADJTERMBASIC.


*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 RETERMNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREADJTERMBASIC-RETERMNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREADJTERMBASIC-RETERMNUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field READJUSTMENTELEMENTARYRULE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREADJTERMBASIC-READJUSTMENTELEMENTARYRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREADJTERMBASIC-READJUSTMENTELEMENTARYRULE.
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_IREADJTERMBASIC_STR, 
MANDT TYPE STRING,
INTERNALREALESTATENUMBER TYPE STRING,
RETERMNUMBER TYPE STRING,
READJUSTMENTRULE TYPE STRING,
READJUSTMENTELEMENTARYRULE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
READJUSTMENTISINDIVGLOBPARAM TYPE STRING,
READJUSTMENTISINDIVSPCFCPARAM TYPE STRING,
REIDENTIFICATIONKEY TYPE STRING,
RESTATUSOBJECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREADJTERMBASIC_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_IREADJTERMBASIC_STR-MANDT sy-vline 
WA_IREADJTERMBASIC_STR-INTERNALREALESTATENUMBER sy-vline 
WA_IREADJTERMBASIC_STR-RETERMNUMBER sy-vline 
WA_IREADJTERMBASIC_STR-READJUSTMENTRULE sy-vline 
WA_IREADJTERMBASIC_STR-READJUSTMENTELEMENTARYRULE sy-vline 
WA_IREADJTERMBASIC_STR-VALIDITYSTARTDATE sy-vline 
WA_IREADJTERMBASIC_STR-VALIDITYENDDATE sy-vline 
WA_IREADJTERMBASIC_STR-READJUSTMENTISINDIVGLOBPARAM sy-vline 
WA_IREADJTERMBASIC_STR-READJUSTMENTISINDIVSPCFCPARAM sy-vline 
WA_IREADJTERMBASIC_STR-REIDENTIFICATIONKEY sy-vline 
WA_IREADJTERMBASIC_STR-RESTATUSOBJECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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