ABAP Select data from SAP table ESH_L_RECONTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_RECONTRACT
*  INTO TABLE @DATA(IT_ESH_L_RECONTRACT2).
*--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_ESH_L_RECONTRACT INDEX 1 INTO DATA(WA_ESH_L_RECONTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_RECONTRACT>-MANDT = 1.
<ESH_L_RECONTRACT>-INTERNALREALESTATENUMBER = 1.
<ESH_L_RECONTRACT>-COMPANYCODE = 1.
<ESH_L_RECONTRACT>-COMPANYCODENAME = 1.
<ESH_L_RECONTRACT>-CONTRACTENDDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_RECONTRACT-CONTRACTSTARTDATE, sy-vline,
  WA_ESH_L_RECONTRACT-FIRSTNAME, sy-vline,
  WA_ESH_L_RECONTRACT-GROUPBUSINESSPARTNERNAME1, sy-vline,
  WA_ESH_L_RECONTRACT-GROUPBUSINESSPARTNERNAME2, sy-vline,
  WA_ESH_L_RECONTRACT-ISBUSINESSPURPOSECOMPLETED, sy-vline,
  WA_ESH_L_RECONTRACT-LASTNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_RECONTRACT 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_ESH_L_RECONTRACT 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_ESH_L_RECONTRACT INTO WA_ESH_L_RECONTRACT.


*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 REALESTATECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_RECONTRACT-REALESTATECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_RECONTRACT-REALESTATECONTRACT.
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_ESH_L_RECONTRACT_STR, 
MANDT TYPE STRING,
INTERNALREALESTATENUMBER TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
CONTRACTENDDATE TYPE STRING,
CONTRACTSTARTDATE TYPE STRING,
FIRSTNAME TYPE STRING,
GROUPBUSINESSPARTNERNAME1 TYPE STRING,
GROUPBUSINESSPARTNERNAME2 TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
LASTNAME TYPE STRING,
ORGANIZATIONBPNAME1 TYPE STRING,
ORGANIZATIONBPNAME2 TYPE STRING,
ORGANIZATIONBPNAME3 TYPE STRING,
ORGANIZATIONBPNAME4 TYPE STRING,
PERSONFULLNAME TYPE STRING,
PLAINLONGTEXT TYPE STRING,
REALESTATECONTRACT TYPE STRING,
RECONTRACTNAME TYPE STRING,
RECONTRACTSUBJECTDESCRIPTION TYPE STRING,
RECONTRACTSUBJECTTYPENAME TYPE STRING,
RECONTRACTTYPE TYPE STRING,
RECONTRACTTYPENAME TYPE STRING,
USERDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_RECONTRACT_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_ESH_L_RECONTRACT_STR-MANDT sy-vline 
WA_ESH_L_RECONTRACT_STR-INTERNALREALESTATENUMBER sy-vline 
WA_ESH_L_RECONTRACT_STR-COMPANYCODE sy-vline 
WA_ESH_L_RECONTRACT_STR-COMPANYCODENAME sy-vline 
WA_ESH_L_RECONTRACT_STR-CONTRACTENDDATE sy-vline 
WA_ESH_L_RECONTRACT_STR-CONTRACTSTARTDATE sy-vline 
WA_ESH_L_RECONTRACT_STR-FIRSTNAME sy-vline 
WA_ESH_L_RECONTRACT_STR-GROUPBUSINESSPARTNERNAME1 sy-vline 
WA_ESH_L_RECONTRACT_STR-GROUPBUSINESSPARTNERNAME2 sy-vline 
WA_ESH_L_RECONTRACT_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_ESH_L_RECONTRACT_STR-LASTNAME sy-vline 
WA_ESH_L_RECONTRACT_STR-ORGANIZATIONBPNAME1 sy-vline 
WA_ESH_L_RECONTRACT_STR-ORGANIZATIONBPNAME2 sy-vline 
WA_ESH_L_RECONTRACT_STR-ORGANIZATIONBPNAME3 sy-vline 
WA_ESH_L_RECONTRACT_STR-ORGANIZATIONBPNAME4 sy-vline 
WA_ESH_L_RECONTRACT_STR-PERSONFULLNAME sy-vline 
WA_ESH_L_RECONTRACT_STR-PLAINLONGTEXT sy-vline 
WA_ESH_L_RECONTRACT_STR-REALESTATECONTRACT sy-vline 
WA_ESH_L_RECONTRACT_STR-RECONTRACTNAME sy-vline 
WA_ESH_L_RECONTRACT_STR-RECONTRACTSUBJECTDESCRIPTION sy-vline 
WA_ESH_L_RECONTRACT_STR-RECONTRACTSUBJECTTYPENAME sy-vline 
WA_ESH_L_RECONTRACT_STR-RECONTRACTTYPE sy-vline 
WA_ESH_L_RECONTRACT_STR-RECONTRACTTYPENAME sy-vline 
WA_ESH_L_RECONTRACT_STR-USERDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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