ABAP Select data from SAP table SIQ_IQTABLE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SIQ_IQTABLE
*  INTO TABLE @DATA(IT_SIQ_IQTABLE2).
*--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_SIQ_IQTABLE INDEX 1 INTO DATA(WA_SIQ_IQTABLE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SIQ_IQTABLE>-TABLENAME = 1.
<SIQ_IQTABLE>-TABLETYPE = 1.
<SIQ_IQTABLE>-TABLEOWNER = 1.
<SIQ_IQTABLE>-SERVERTYPE = 1.
<SIQ_IQTABLE>-LOCATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SIQ_IQTABLE-DBSPACEID, sy-vline,
  WA_SIQ_IQTABLE-ISPARTITIONED, sy-vline,
  WA_SIQ_IQTABLE-REMARKS, sy-vline,
  WA_SIQ_IQTABLE-TABLECONSTRAINTS, sy-vline,
  WA_SIQ_IQTABLE-PARTITIONTYPE, sy-vline,
  WA_SIQ_IQTABLE-ISRLV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SIQ_IQTABLE 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_SIQ_IQTABLE 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_SIQ_IQTABLE INTO WA_SIQ_IQTABLE.


*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_SIQ_IQTABLE_STR, 
TABLENAME TYPE STRING,
TABLETYPE TYPE STRING,
TABLEOWNER TYPE STRING,
SERVERTYPE TYPE STRING,
LOCATION TYPE STRING,
DBSPACEID TYPE STRING,
ISPARTITIONED TYPE STRING,
REMARKS TYPE STRING,
TABLECONSTRAINTS TYPE STRING,
PARTITIONTYPE TYPE STRING,
ISRLV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SIQ_IQTABLE_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_SIQ_IQTABLE_STR-TABLENAME sy-vline 
WA_SIQ_IQTABLE_STR-TABLETYPE sy-vline 
WA_SIQ_IQTABLE_STR-TABLEOWNER sy-vline 
WA_SIQ_IQTABLE_STR-SERVERTYPE sy-vline 
WA_SIQ_IQTABLE_STR-LOCATION sy-vline 
WA_SIQ_IQTABLE_STR-DBSPACEID sy-vline 
WA_SIQ_IQTABLE_STR-ISPARTITIONED sy-vline 
WA_SIQ_IQTABLE_STR-REMARKS sy-vline 
WA_SIQ_IQTABLE_STR-TABLECONSTRAINTS sy-vline 
WA_SIQ_IQTABLE_STR-PARTITIONTYPE sy-vline 
WA_SIQ_IQTABLE_STR-ISRLV sy-vline      INTO ld_text SEPARATED BY SPACE.

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