ABAP Select data from SAP table SQLTBASLST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SQLTBASLST
*  INTO TABLE @DATA(IT_SQLTBASLST2).
*--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_SQLTBASLST INDEX 1 INTO DATA(WA_SQLTBASLST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SQLTBASLST>-TITLE = 1.
<SQLTBASLST>-DATE_L = 1.
<SQLTBASLST>-TIME = 1.
<SQLTBASLST>-DURATION = 1.
<SQLTBASLST>-PROGRAM_L = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SQLTBASLST-TABLE_L, sy-vline,
  WA_SQLTBASLST-OPERATION, sy-vline,
  WA_SQLTBASLST-CURS, sy-vline,
  WA_SQLTBASLST-ARRAYSIZE, sy-vline,
  WA_SQLTBASLST-RECORDS, sy-vline,
  WA_SQLTBASLST-RETCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SQLTBASLST 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_SQLTBASLST 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_SQLTBASLST INTO WA_SQLTBASLST.


*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_SQLTBASLST_STR, 
TITLE TYPE STRING,
DATE_L TYPE STRING,
TIME TYPE STRING,
DURATION TYPE STRING,
PROGRAM_L TYPE STRING,
TABLE_L TYPE STRING,
OPERATION TYPE STRING,
CURS TYPE STRING,
ARRAYSIZE TYPE STRING,
RECORDS TYPE STRING,
RETCODE TYPE STRING,
CON_NAME TYPE STRING,
WPN TYPE STRING,
STATEMENT TYPE STRING,
DBREQUEST TYPE STRING,
REPORT TYPE STRING,
PID TYPE STRING,
PTYPE TYPE STRING,
CLIENT TYPE STRING,
USER_L TYPE STRING,
TRANS_ID TYPE STRING,
VARNAME TYPE STRING,
VALUE TYPE STRING,
REPORT_TXT TYPE STRING,
PID_TXT TYPE STRING,
PTYPE_TXT TYPE STRING,
CLIENT_TXT TYPE STRING,
USER_L_TXT TYPE STRING,
TRA_ID_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SQLTBASLST_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_SQLTBASLST_STR-TITLE sy-vline 
WA_SQLTBASLST_STR-DATE_L sy-vline 
WA_SQLTBASLST_STR-TIME sy-vline 
WA_SQLTBASLST_STR-DURATION sy-vline 
WA_SQLTBASLST_STR-PROGRAM_L sy-vline 
WA_SQLTBASLST_STR-TABLE_L sy-vline 
WA_SQLTBASLST_STR-OPERATION sy-vline 
WA_SQLTBASLST_STR-CURS sy-vline 
WA_SQLTBASLST_STR-ARRAYSIZE sy-vline 
WA_SQLTBASLST_STR-RECORDS sy-vline 
WA_SQLTBASLST_STR-RETCODE sy-vline 
WA_SQLTBASLST_STR-CON_NAME sy-vline 
WA_SQLTBASLST_STR-WPN sy-vline 
WA_SQLTBASLST_STR-STATEMENT sy-vline 
WA_SQLTBASLST_STR-DBREQUEST sy-vline 
WA_SQLTBASLST_STR-REPORT sy-vline 
WA_SQLTBASLST_STR-PID sy-vline 
WA_SQLTBASLST_STR-PTYPE sy-vline 
WA_SQLTBASLST_STR-CLIENT sy-vline 
WA_SQLTBASLST_STR-USER_L sy-vline 
WA_SQLTBASLST_STR-TRANS_ID sy-vline 
WA_SQLTBASLST_STR-VARNAME sy-vline 
WA_SQLTBASLST_STR-VALUE sy-vline 
WA_SQLTBASLST_STR-REPORT_TXT sy-vline 
WA_SQLTBASLST_STR-PID_TXT sy-vline 
WA_SQLTBASLST_STR-PTYPE_TXT sy-vline 
WA_SQLTBASLST_STR-CLIENT_TXT sy-vline 
WA_SQLTBASLST_STR-USER_L_TXT sy-vline 
WA_SQLTBASLST_STR-TRA_ID_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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