ABAP Select data from SAP table TGSU0 into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TGSU0 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 TGSU0. 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 TGSU0 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_TGSU0 TYPE STANDARD TABLE OF TGSU0,
      WA_TGSU0 TYPE TGSU0,
      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: <TGSU0> TYPE TGSU0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TGSU0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TGSU0
  INTO TABLE IT_TGSU0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TGSU0
*  INTO TABLE @DATA(IT_TGSU02).
*--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_TGSU0 INDEX 1 INTO DATA(WA_TGSU02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TGSU0 ASSIGNING <TGSU0>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
<TGSU0>-BLOCK = 1.
<TGSU0>-SEQUENZ = 1.
<TGSU0>-SYMBOL = 1.
<TGSU0>-PREFIX = 1.
<TGSU0>-HEADER = 1.
ENDLOOP.

LOOP AT IT_TGSU0 INTO WA_TGSU0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TGSU0-DESCRIPT, sy-vline,
WA_TGSU0-OPTIONAL, sy-vline,
WA_TGSU0-PARAMETER, sy-vline,
WA_TGSU0-TTABLE, sy-vline,
WA_TGSU0-CUSTOMIZE, sy-vline,
WA_TGSU0-PRIORITY, sy-vline.
ENDLOOP. *Add any further fields from structure WA_TGSU0 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_TGSU0 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_TGSU0 INTO WA_TGSU0. *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_TGSU0_STR,
BLOCK TYPE STRING,
SEQUENZ TYPE STRING,
SYMBOL TYPE STRING,
PREFIX TYPE STRING,
HEADER TYPE STRING,
DESCRIPT TYPE STRING,
OPTIONAL TYPE STRING,
PARAMETER TYPE STRING,
TTABLE TYPE STRING,
CUSTOMIZE TYPE STRING,
PRIORITY TYPE STRING,
FIELDNAME TYPE STRING,END OF T_EKKO_STR. DATA: WA_TGSU0_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_TGSU0_STR-BLOCK sy-vline
WA_TGSU0_STR-SEQUENZ sy-vline
WA_TGSU0_STR-SYMBOL sy-vline
WA_TGSU0_STR-PREFIX sy-vline
WA_TGSU0_STR-HEADER sy-vline
WA_TGSU0_STR-DESCRIPT sy-vline
WA_TGSU0_STR-OPTIONAL sy-vline
WA_TGSU0_STR-PARAMETER sy-vline
WA_TGSU0_STR-TTABLE sy-vline
WA_TGSU0_STR-CUSTOMIZE sy-vline
WA_TGSU0_STR-PRIORITY sy-vline
WA_TGSU0_STR-FIELDNAME sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.