ABAP Select data from SAP table ICACORRESPNCHEAD into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICACORRESPNCHEAD
*  INTO TABLE @DATA(IT_ICACORRESPNCHEAD2).
*--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_ICACORRESPNCHEAD INDEX 1 INTO DATA(WA_ICACORRESPNCHEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICACORRESPNCHEAD>-MANDT = 1.
<ICACORRESPNCHEAD>-CACORRESPONDENCETYPE = 1.
<ICACORRESPNCHEAD>-CACORRESPONDENCE = 1.
<ICACORRESPNCHEAD>-CONTRACTACCOUNT = 1.
<ICACORRESPNCHEAD>-BUSINESSPARTNER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICACORRESPNCHEAD-ORIGLCORRESPONDENCERECIPIENT, sy-vline,
  WA_ICACORRESPNCHEAD-CACONTRACT, sy-vline,
  WA_ICACORRESPNCHEAD-CASUBAPPLICATION, sy-vline,
  WA_ICACORRESPNCHEAD-COMPANYCODE, sy-vline,
  WA_ICACORRESPNCHEAD-CACORRESPNCSENDERADDRESSID, sy-vline,
  WA_ICACORRESPNCHEAD-CREATEDBYUSER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICACORRESPNCHEAD 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_ICACORRESPNCHEAD 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_ICACORRESPNCHEAD INTO WA_ICACORRESPNCHEAD.


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

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

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

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

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICACORRESPNCHEAD-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICACORRESPNCHEAD-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PERSONNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICACORRESPNCHEAD-PERSONNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICACORRESPNCHEAD-PERSONNUMBER.
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_ICACORRESPNCHEAD_STR, 
MANDT TYPE STRING,
CACORRESPONDENCETYPE TYPE STRING,
CACORRESPONDENCE TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
ORIGLCORRESPONDENCERECIPIENT TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
COMPANYCODE TYPE STRING,
CACORRESPNCSENDERADDRESSID TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CORRESPONDENCEPRINTDATE TYPE STRING,
CORRESPONDENCEISSUEDATE TYPE STRING,
CORRESPONDENCEISSUETIME TYPE STRING,
CURRENCY TYPE STRING,
CAAMOUNTINLOCALCURRENCY TYPE STRING,
CAMASSRUNDATE TYPE STRING,
CAMASSRUNID TYPE STRING,
LANGUAGE TYPE STRING,
BUSINESSPARTNERADDRESSID TYPE STRING,
PERSONNUMBER TYPE STRING,
CORRESPONDENCE1STENTITYIDN TYPE STRING,
CORRESPONDENCE1STENTITYDATA TYPE STRING,
CORRESPONDENCE2NDENTITYIDN TYPE STRING,
CORRESPONDENCE2NDENTITYDATA TYPE STRING,
CORRESPONDENCE3RDENTITYIDN TYPE STRING,
CORRESPONDENCE3RDENTITYDATA TYPE STRING,
CORRESPONDENCE4THENTITYIDN TYPE STRING,
CORRESPONDENCE4THENTITYDATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICACORRESPNCHEAD_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_ICACORRESPNCHEAD_STR-MANDT sy-vline 
WA_ICACORRESPNCHEAD_STR-CACORRESPONDENCETYPE sy-vline 
WA_ICACORRESPNCHEAD_STR-CACORRESPONDENCE sy-vline 
WA_ICACORRESPNCHEAD_STR-CONTRACTACCOUNT sy-vline 
WA_ICACORRESPNCHEAD_STR-BUSINESSPARTNER sy-vline 
WA_ICACORRESPNCHEAD_STR-ORIGLCORRESPONDENCERECIPIENT sy-vline 
WA_ICACORRESPNCHEAD_STR-CACONTRACT sy-vline 
WA_ICACORRESPNCHEAD_STR-CASUBAPPLICATION sy-vline 
WA_ICACORRESPNCHEAD_STR-COMPANYCODE sy-vline 
WA_ICACORRESPNCHEAD_STR-CACORRESPNCSENDERADDRESSID sy-vline 
WA_ICACORRESPNCHEAD_STR-CREATEDBYUSER sy-vline 
WA_ICACORRESPNCHEAD_STR-CREATIONDATE sy-vline 
WA_ICACORRESPNCHEAD_STR-CREATIONTIME sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCEPRINTDATE sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCEISSUEDATE sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCEISSUETIME sy-vline 
WA_ICACORRESPNCHEAD_STR-CURRENCY sy-vline 
WA_ICACORRESPNCHEAD_STR-CAAMOUNTINLOCALCURRENCY sy-vline 
WA_ICACORRESPNCHEAD_STR-CAMASSRUNDATE sy-vline 
WA_ICACORRESPNCHEAD_STR-CAMASSRUNID sy-vline 
WA_ICACORRESPNCHEAD_STR-LANGUAGE sy-vline 
WA_ICACORRESPNCHEAD_STR-BUSINESSPARTNERADDRESSID sy-vline 
WA_ICACORRESPNCHEAD_STR-PERSONNUMBER sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE1STENTITYIDN sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE1STENTITYDATA sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE2NDENTITYIDN sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE2NDENTITYDATA sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE3RDENTITYIDN sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE3RDENTITYDATA sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE4THENTITYIDN sy-vline 
WA_ICACORRESPNCHEAD_STR-CORRESPONDENCE4THENTITYDATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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