ABAP Select data from SAP table FKK_CRM_INSTPLN_HEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_CRM_INSTPLN_HEAD
*  INTO TABLE @DATA(IT_FKK_CRM_INSTPLN_HEAD2).
*--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_FKK_CRM_INSTPLN_HEAD INDEX 1 INTO DATA(WA_FKK_CRM_INSTPLN_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_CRM_INSTPLN_HEAD>-RPNUM = 1.
<FKK_CRM_INSTPLN_HEAD>-GPART = 1.
<FKK_CRM_INSTPLN_HEAD>-VKONT = 1.
<FKK_CRM_INSTPLN_HEAD>-VTREF = 1.
<FKK_CRM_INSTPLN_HEAD>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_CRM_INSTPLN_HEAD-RPCAT, sy-vline,
  WA_FKK_CRM_INSTPLN_HEAD-RPCATTXT, sy-vline,
  WA_FKK_CRM_INSTPLN_HEAD-COMPA, sy-vline,
  WA_FKK_CRM_INSTPLN_HEAD-GESOF, sy-vline,
  WA_FKK_CRM_INSTPLN_HEAD-FAEBETR, sy-vline,
  WA_FKK_CRM_INSTPLN_HEAD-INTBETG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_CRM_INSTPLN_HEAD 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_FKK_CRM_INSTPLN_HEAD 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_FKK_CRM_INSTPLN_HEAD INTO WA_FKK_CRM_INSTPLN_HEAD.


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

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

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_INSTPLN_HEAD-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_INSTPLN_HEAD-VTREF.
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_FKK_CRM_INSTPLN_HEAD_STR, 
RPNUM TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
VTREF TYPE STRING,
BUKRS TYPE STRING,
RPCAT TYPE STRING,
RPCATTXT TYPE STRING,
COMPA TYPE STRING,
GESOF TYPE STRING,
FAEBETR TYPE STRING,
INTBETG TYPE STRING,
GEBUEHR TYPE STRING,
WAERS TYPE STRING,
STTDT TYPE STRING,
ENDDT TYPE STRING,
NINST TYPE STRING,
DEAKT TYPE STRING,
AUSGL TYPE STRING,
OFFEN TYPE STRING,
DEAGD TYPE STRING,
DEADT TYPE STRING,
DEOFF TYPE STRING,
DEAGDTXT TYPE STRING,
AMPEL TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
IPSTATUS TYPE STRING,
CGICON TYPE STRING,
WLICON TYPE STRING,
SUBAP TYPE STRING,
C4EYE TYPE STRING,
RPRDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_CRM_INSTPLN_HEAD_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_FKK_CRM_INSTPLN_HEAD_STR-RPNUM sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-GPART sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-VKONT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-VTREF sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-BUKRS sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-RPCAT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-RPCATTXT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-COMPA sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-GESOF sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-FAEBETR sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-INTBETG sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-GEBUEHR sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-WAERS sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-STTDT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-ENDDT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-NINST sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-DEAKT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-AUSGL sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-OFFEN sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-DEAGD sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-DEADT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-DEOFF sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-DEAGDTXT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-AMPEL sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-ERNAM sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-CPUDT sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-CPUTM sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-IPSTATUS sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-CGICON sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-WLICON sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-SUBAP sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-C4EYE sy-vline 
WA_FKK_CRM_INSTPLN_HEAD_STR-RPRDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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