ABAP Select data from SAP table VZZKOKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VZZKOKO
*  INTO TABLE @DATA(IT_VZZKOKO2).
*--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_VZZKOKO INDEX 1 INTO DATA(WA_VZZKOKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VZZKOKO>-MANDT = 1.
<VZZKOKO>-BUKRS = 1.
<VZZKOKO>-SANLF = 1.
<VZZKOKO>-RKEY1 = 1.
<VZZKOKO>-DGUEL_KK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VZZKOKO-NLFD_ANG, sy-vline,
  WA_VZZKOKO-SSTATI, sy-vline,
  WA_VZZKOKO-SKOKOART, sy-vline,
  WA_VZZKOKO-STILGRHY, sy-vline,
  WA_VZZKOKO-STILGART, sy-vline,
  WA_VZZKOKO-SDISEIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VZZKOKO 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_VZZKOKO 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_VZZKOKO INTO WA_VZZKOKO.


*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_VZZKOKO_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SANLF TYPE STRING,
RKEY1 TYPE STRING,
DGUEL_KK TYPE STRING,
NLFD_ANG TYPE STRING,
SSTATI TYPE STRING,
SKOKOART TYPE STRING,
STILGRHY TYPE STRING,
STILGART TYPE STRING,
SDISEIN TYPE STRING,
KZAHLUNG TYPE STRING,
BZAHLUNG TYPE STRING,
SWHRZHLG TYPE STRING,
BZUSAGE TYPE STRING,
SWHRZUSA TYPE STRING,
PEFFZINS TYPE STRING,
SEFFMETH TYPE STRING,
SZBMETH TYPE STRING,
SDISKO TYPE STRING,
DKUEND TYPE STRING,
SKUEND TYPE STRING,
DKUENDDG TYPE STRING,
DBLFZ TYPE STRING,
DBLFZ_ORIGIN TYPE STRING,
DELFZ TYPE STRING,
DRESAM TYPE STRING,
DRESBIS TYPE STRING,
DANGAM TYPE STRING,
DANGBIS TYPE STRING,
SANGVOR TYPE STRING,
JANNAHME TYPE STRING,
SANNAHME TYPE STRING,
DANNAHME TYPE STRING,
JVERTRAG TYPE STRING,
DVERTRAM TYPE STRING,
DVERTBIS TYPE STRING,
PMANEFFZ TYPE STRING,
SEFFM2 TYPE STRING,
SKUEGL TYPE STRING,
RPNR TYPE STRING,
DEFSZ TYPE STRING,
DGES TYPE STRING,
SGESAUS TYPE STRING,
SZKZ TYPE STRING,
NANGEBOT TYPE STRING,
SINCL TYPE STRING,
ZVRHYEFF TYPE STRING,
PVGLEFFZ TYPE STRING,
SULTEFSZ TYPE STRING,
DABEFFZ TYPE STRING,
DKUENDDN TYPE STRING,
SKUEDN TYPE STRING,
SKUEART TYPE STRING,
DMARKTZINS TYPE STRING,
SKALIDWT TYPE STRING,
EDEFFZINS TYPE STRING,
EDEFFMETH TYPE STRING,
JAHREFFZINS TYPE STRING,
JAHREFFMETH TYPE STRING,
PEFFZINS_ORIGIN TYPE STRING,
PEFFZINS_ADD TYPE STRING,
GROUP_ID TYPE STRING,
VERSION TYPE STRING,
CLUSTER_NO TYPE STRING,
ORIGINAL_TERM TYPE STRING,
OVERALL_RUNTIME TYPE STRING,
ORIG_CREDIT_SUM TYPE STRING,
DATE_REPAYMENT TYPE STRING,
DATE_FIRST_RATE TYPE STRING,
DAY_OF_PAYMENT TYPE STRING,
CLEARING_RATE TYPE STRING,
EFF_INT_L_PYMNP TYPE STRING,
DEFF_INT_L_PYMNP TYPE STRING,
REPAY_DELAY TYPE STRING,
CALCULATED_PARAM TYPE STRING,
CURR_CREDIT_SUM TYPE STRING,
BROUNDUNIT TYPE STRING,
SROUND TYPE STRING,
BOVERLIMIT TYPE STRING,
POVERLIMIT TYPE STRING,
CONTAB TYPE STRING,
CONTAB_VERSION TYPE STRING,
TERM_PAYMENT TYPE STRING,
PAPR_ORIGIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VZZKOKO_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_VZZKOKO_STR-MANDT sy-vline 
WA_VZZKOKO_STR-BUKRS sy-vline 
WA_VZZKOKO_STR-SANLF sy-vline 
WA_VZZKOKO_STR-RKEY1 sy-vline 
WA_VZZKOKO_STR-DGUEL_KK sy-vline 
WA_VZZKOKO_STR-NLFD_ANG sy-vline 
WA_VZZKOKO_STR-SSTATI sy-vline 
WA_VZZKOKO_STR-SKOKOART sy-vline 
WA_VZZKOKO_STR-STILGRHY sy-vline 
WA_VZZKOKO_STR-STILGART sy-vline 
WA_VZZKOKO_STR-SDISEIN sy-vline 
WA_VZZKOKO_STR-KZAHLUNG sy-vline 
WA_VZZKOKO_STR-BZAHLUNG sy-vline 
WA_VZZKOKO_STR-SWHRZHLG sy-vline 
WA_VZZKOKO_STR-BZUSAGE sy-vline 
WA_VZZKOKO_STR-SWHRZUSA sy-vline 
WA_VZZKOKO_STR-PEFFZINS sy-vline 
WA_VZZKOKO_STR-SEFFMETH sy-vline 
WA_VZZKOKO_STR-SZBMETH sy-vline 
WA_VZZKOKO_STR-SDISKO sy-vline 
WA_VZZKOKO_STR-DKUEND sy-vline 
WA_VZZKOKO_STR-SKUEND sy-vline 
WA_VZZKOKO_STR-DKUENDDG sy-vline 
WA_VZZKOKO_STR-DBLFZ sy-vline 
WA_VZZKOKO_STR-DBLFZ_ORIGIN sy-vline 
WA_VZZKOKO_STR-DELFZ sy-vline 
WA_VZZKOKO_STR-DRESAM sy-vline 
WA_VZZKOKO_STR-DRESBIS sy-vline 
WA_VZZKOKO_STR-DANGAM sy-vline 
WA_VZZKOKO_STR-DANGBIS sy-vline 
WA_VZZKOKO_STR-SANGVOR sy-vline 
WA_VZZKOKO_STR-JANNAHME sy-vline 
WA_VZZKOKO_STR-SANNAHME sy-vline 
WA_VZZKOKO_STR-DANNAHME sy-vline 
WA_VZZKOKO_STR-JVERTRAG sy-vline 
WA_VZZKOKO_STR-DVERTRAM sy-vline 
WA_VZZKOKO_STR-DVERTBIS sy-vline 
WA_VZZKOKO_STR-PMANEFFZ sy-vline 
WA_VZZKOKO_STR-SEFFM2 sy-vline 
WA_VZZKOKO_STR-SKUEGL sy-vline 
WA_VZZKOKO_STR-RPNR sy-vline 
WA_VZZKOKO_STR-DEFSZ sy-vline 
WA_VZZKOKO_STR-DGES sy-vline 
WA_VZZKOKO_STR-SGESAUS sy-vline 
WA_VZZKOKO_STR-SZKZ sy-vline 
WA_VZZKOKO_STR-NANGEBOT sy-vline 
WA_VZZKOKO_STR-SINCL sy-vline 
WA_VZZKOKO_STR-ZVRHYEFF sy-vline 
WA_VZZKOKO_STR-PVGLEFFZ sy-vline 
WA_VZZKOKO_STR-SULTEFSZ sy-vline 
WA_VZZKOKO_STR-DABEFFZ sy-vline 
WA_VZZKOKO_STR-DKUENDDN sy-vline 
WA_VZZKOKO_STR-SKUEDN sy-vline 
WA_VZZKOKO_STR-SKUEART sy-vline 
WA_VZZKOKO_STR-DMARKTZINS sy-vline 
WA_VZZKOKO_STR-SKALIDWT sy-vline 
WA_VZZKOKO_STR-EDEFFZINS sy-vline 
WA_VZZKOKO_STR-EDEFFMETH sy-vline 
WA_VZZKOKO_STR-JAHREFFZINS sy-vline 
WA_VZZKOKO_STR-JAHREFFMETH sy-vline 
WA_VZZKOKO_STR-PEFFZINS_ORIGIN sy-vline 
WA_VZZKOKO_STR-PEFFZINS_ADD sy-vline 
WA_VZZKOKO_STR-GROUP_ID sy-vline 
WA_VZZKOKO_STR-VERSION sy-vline 
WA_VZZKOKO_STR-CLUSTER_NO sy-vline 
WA_VZZKOKO_STR-ORIGINAL_TERM sy-vline 
WA_VZZKOKO_STR-OVERALL_RUNTIME sy-vline 
WA_VZZKOKO_STR-ORIG_CREDIT_SUM sy-vline 
WA_VZZKOKO_STR-DATE_REPAYMENT sy-vline 
WA_VZZKOKO_STR-DATE_FIRST_RATE sy-vline 
WA_VZZKOKO_STR-DAY_OF_PAYMENT sy-vline 
WA_VZZKOKO_STR-CLEARING_RATE sy-vline 
WA_VZZKOKO_STR-EFF_INT_L_PYMNP sy-vline 
WA_VZZKOKO_STR-DEFF_INT_L_PYMNP sy-vline 
WA_VZZKOKO_STR-REPAY_DELAY sy-vline 
WA_VZZKOKO_STR-CALCULATED_PARAM sy-vline 
WA_VZZKOKO_STR-CURR_CREDIT_SUM sy-vline 
WA_VZZKOKO_STR-BROUNDUNIT sy-vline 
WA_VZZKOKO_STR-SROUND sy-vline 
WA_VZZKOKO_STR-BOVERLIMIT sy-vline 
WA_VZZKOKO_STR-POVERLIMIT sy-vline 
WA_VZZKOKO_STR-CONTAB sy-vline 
WA_VZZKOKO_STR-CONTAB_VERSION sy-vline 
WA_VZZKOKO_STR-TERM_PAYMENT sy-vline 
WA_VZZKOKO_STR-PAPR_ORIGIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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