ABAP Select data from SAP table IUUC_TABLES_ENTRIES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IUUC_TABLES_ENTRIES
*  INTO TABLE @DATA(IT_IUUC_TABLES_ENTRIES2).
*--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_IUUC_TABLES_ENTRIES INDEX 1 INTO DATA(WA_IUUC_TABLES_ENTRIES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IUUC_TABLES_ENTRIES>-NUMBER_ENTRIES = 1.
<IUUC_TABLES_ENTRIES>-MT_ID = 1.
<IUUC_TABLES_ENTRIES>-TABNAME = 1.
<IUUC_TABLES_ENTRIES>-SHADOWTAB_NAME = 1.
<IUUC_TABLES_ENTRIES>-TABCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IUUC_TABLES_ENTRIES-SQLTAB, sy-vline,
  WA_IUUC_TABLES_ENTRIES-CONTFLAG, sy-vline,
  WA_IUUC_TABLES_ENTRIES-COBJ_GUID, sy-vline,
  WA_IUUC_TABLES_ENTRIES-DEVCLASS, sy-vline,
  WA_IUUC_TABLES_ENTRIES-COMPONENT, sy-vline,
  WA_IUUC_TABLES_ENTRIES-CLIDEP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IUUC_TABLES_ENTRIES 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_IUUC_TABLES_ENTRIES 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_IUUC_TABLES_ENTRIES INTO WA_IUUC_TABLES_ENTRIES.


*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_IUUC_TABLES_ENTRIES_STR, 
NUMBER_ENTRIES TYPE STRING,
MT_ID TYPE STRING,
TABNAME TYPE STRING,
SHADOWTAB_NAME TYPE STRING,
TABCLASS TYPE STRING,
SQLTAB TYPE STRING,
CONTFLAG TYPE STRING,
COBJ_GUID TYPE STRING,
DEVCLASS TYPE STRING,
COMPONENT TYPE STRING,
CLIDEP TYPE STRING,
PROCESS_OPTION TYPE STRING,
SHADOW_TABLE_GEN TYPE STRING,
ENTRIES_FOUND TYPE STRING,
TRIGGER_STATE TYPE STRING,
TRG_DEACT_RCV TYPE STRING,
IN_PROCESS TYPE STRING,
FAILED TYPE STRING,
RCV_TAB_DEL TYPE STRING,
ORIGIN TYPE STRING,
PROCOPT_CONFL_ST TYPE STRING,
CLASSIF_PROCOPT TYPE STRING,
CHANGE_CRITICAL TYPE STRING,
CURSETTING TYPE STRING,
IUUC_EVAL_VERS TYPE STRING,
LOGTAB_IN_RCV TYPE STRING,
CLUSTER_PHYSICAL TYPE STRING,
CONSIDER_TREQ TYPE STRING,
IMIG_STATE TYPE STRING,
PROBTAB_NAME TYPE STRING,
WRITE_BEHAVIOUR TYPE STRING,
IN_SOBJ TYPE STRING,
CLASSIF_SOURCE TYPE STRING,
OVERRIDE_ST10 TYPE STRING,
DELTA_ALLOWED TYPE STRING,
PHASE TYPE STRING,
CRE_LOGTAB_RCV TYPE STRING,
NO_REPL TYPE STRING,
TAB_IN_RCV TYPE STRING,
TAB_IN_SND TYPE STRING,
TRNSACT_CONSIST TYPE STRING,
SYN_IN_RCV TYPE STRING,
LCL_TAB_FOR_RCV TYPE STRING,
TRANSFER_NULLS TYPE STRING,
MSTR_LOGTAB_NAME TYPE STRING,
SUBS_LOGTAB_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IUUC_TABLES_ENTRIES_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_IUUC_TABLES_ENTRIES_STR-NUMBER_ENTRIES sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-MT_ID sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TABNAME sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-SHADOWTAB_NAME sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TABCLASS sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-SQLTAB sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CONTFLAG sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-COBJ_GUID sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-DEVCLASS sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-COMPONENT sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CLIDEP sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-PROCESS_OPTION sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-SHADOW_TABLE_GEN sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-ENTRIES_FOUND sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TRIGGER_STATE sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TRG_DEACT_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-IN_PROCESS sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-FAILED sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-RCV_TAB_DEL sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-ORIGIN sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-PROCOPT_CONFL_ST sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CLASSIF_PROCOPT sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CHANGE_CRITICAL sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CURSETTING sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-IUUC_EVAL_VERS sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-LOGTAB_IN_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CLUSTER_PHYSICAL sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CONSIDER_TREQ sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-IMIG_STATE sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-PROBTAB_NAME sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-WRITE_BEHAVIOUR sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-IN_SOBJ sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CLASSIF_SOURCE sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-OVERRIDE_ST10 sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-DELTA_ALLOWED sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-PHASE sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-CRE_LOGTAB_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-NO_REPL sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TAB_IN_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TAB_IN_SND sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TRNSACT_CONSIST sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-SYN_IN_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-LCL_TAB_FOR_RCV sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-TRANSFER_NULLS sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-MSTR_LOGTAB_NAME sy-vline 
WA_IUUC_TABLES_ENTRIES_STR-SUBS_LOGTAB_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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