ABAP Select data from SAP table SGW_STAT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SGW_STAT 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 SGW_STAT. 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 SGW_STAT 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_SGW_STAT TYPE STANDARD TABLE OF SGW_STAT,
      WA_SGW_STAT TYPE SGW_STAT,
      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: <SGW_STAT> TYPE SGW_STAT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SGW_STAT
*  INTO TABLE @DATA(IT_SGW_STAT2).
*--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_SGW_STAT INDEX 1 INTO DATA(WA_SGW_STAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SGW_STAT>-STAT_ACTIVE = 1.
<SGW_STAT>-NO_TIMEOUTS_M = 1.
<SGW_STAT>-NO_TIMEOUTS = 1.
<SGW_STAT>-NO_OVERFLOWS_M = 1.
<SGW_STAT>-NO_OVERFLOWS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SGW_STAT-ACT_OVERFLOW_USAGE, sy-vline,
  WA_SGW_STAT-MAX_OVERFLOW_USAGE, sy-vline,
  WA_SGW_STAT-MAX_DATA_STACK_SIZE, sy-vline,
  WA_SGW_STAT-USED_SHARED_BLOCKS, sy-vline,
  WA_SGW_STAT-MAX_USED_SHARED_BLOCKS, sy-vline,
  WA_SGW_STAT-NO_CONNECTS_M, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SGW_STAT 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_SGW_STAT 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_SGW_STAT INTO WA_SGW_STAT.


*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_SGW_STAT_STR, 
STAT_ACTIVE TYPE STRING,
NO_TIMEOUTS_M TYPE STRING,
NO_TIMEOUTS TYPE STRING,
NO_OVERFLOWS_M TYPE STRING,
NO_OVERFLOWS TYPE STRING,
ACT_OVERFLOW_USAGE TYPE STRING,
MAX_OVERFLOW_USAGE TYPE STRING,
MAX_DATA_STACK_SIZE TYPE STRING,
USED_SHARED_BLOCKS TYPE STRING,
MAX_USED_SHARED_BLOCKS TYPE STRING,
NO_CONNECTS_M TYPE STRING,
NO_CONNECTS TYPE STRING,
NO_CMINITS_M TYPE STRING,
NO_CMINITS TYPE STRING,
NO_GWRD_REQ_M TYPE STRING,
NO_GWRD_REQ TYPE STRING,
GWRD_TIME_SEC TYPE STRING,
GWRD_TIME_USEC TYPE STRING,
GWRD_TIME_MIN TYPE STRING,
GWRD_TIME_MAX TYPE STRING,
GWRD_LONGEST_REQ TYPE STRING,
NO_GWWP_REQ_M TYPE STRING,
NO_GWWP_REQ TYPE STRING,
GWWP_TIME_SEC TYPE STRING,
GWWP_TIME_USEC TYPE STRING,
GWWP_TIME_MIN TYPE STRING,
GWWP_TIME_MAX TYPE STRING,
NO_TCP_READ_M TYPE STRING,
NO_TCP_READ TYPE STRING,
NO_TCP_FRAG_READ_M TYPE STRING,
NO_TCP_FRAG_READ TYPE STRING,
TCP_READ_BYTES_M TYPE STRING,
TCP_READ_BYTES TYPE STRING,
TCP_READ_TIME_SEC TYPE STRING,
TCP_READ_TIME_USEC TYPE STRING,
TCP_READ_TIME_MIN TYPE STRING,
TCP_READ_TIME_MAX TYPE STRING,
NO_TCP_WRITE_M TYPE STRING,
NO_TCP_WRITE TYPE STRING,
NO_TCP_FRAG_WRITE_M TYPE STRING,
NO_TCP_FRAG_WRITE TYPE STRING,
TCP_WRITE_BYTES_M TYPE STRING,
TCP_WRITE_BYTES TYPE STRING,
TCP_WRITE_TIME_SEC TYPE STRING,
TCP_WRITE_TIME_USEC TYPE STRING,
TCP_WRITE_TIME_MIN TYPE STRING,
TCP_WRITE_TIME_MAX TYPE STRING,
TCP_ERRORS TYPE STRING,
NO_CPIC_READ_M TYPE STRING,
NO_CPIC_READ TYPE STRING,
CPIC_READ_BYTES_M TYPE STRING,
CPIC_READ_BYTES TYPE STRING,
CPIC_READ_TIME_SEC TYPE STRING,
CPIC_READ_TIME_USEC TYPE STRING,
CPIC_READ_TIME_MIN TYPE STRING,
CPIC_READ_TIME_MAX TYPE STRING,
NO_CPIC_WRITE_M TYPE STRING,
NO_CPIC_WRITE TYPE STRING,
CPIC_WRITE_BYTES_M TYPE STRING,
CPIC_WRITE_BYTES TYPE STRING,
CPIC_WRITE_TIME_SEC TYPE STRING,
CPIC_WRITE_TIME_USEC TYPE STRING,
CPIC_WRITE_TIME_MIN TYPE STRING,
CPIC_WRITE_TIME_MAX TYPE STRING,
CPIC_ERRORS TYPE STRING,
CONV_NO TYPE STRING,
TCP_CONV_NO TYPE STRING,
SNA_CONV_NO TYPE STRING,
MAX_OVERFLOW_SIZE TYPE STRING,
MAX_CONN TYPE STRING,
PENDING_REQ_PEAK TYPE STRING,
MAX_SHM_REQ TYPE STRING,
REQ_STACK_SIZE TYPE STRING,
ACT_MAX_DATA_STACK TYPE STRING,
CONN_WITH_ACT_MAX_DATA_STACK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SGW_STAT_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_SGW_STAT_STR-STAT_ACTIVE sy-vline 
WA_SGW_STAT_STR-NO_TIMEOUTS_M sy-vline 
WA_SGW_STAT_STR-NO_TIMEOUTS sy-vline 
WA_SGW_STAT_STR-NO_OVERFLOWS_M sy-vline 
WA_SGW_STAT_STR-NO_OVERFLOWS sy-vline 
WA_SGW_STAT_STR-ACT_OVERFLOW_USAGE sy-vline 
WA_SGW_STAT_STR-MAX_OVERFLOW_USAGE sy-vline 
WA_SGW_STAT_STR-MAX_DATA_STACK_SIZE sy-vline 
WA_SGW_STAT_STR-USED_SHARED_BLOCKS sy-vline 
WA_SGW_STAT_STR-MAX_USED_SHARED_BLOCKS sy-vline 
WA_SGW_STAT_STR-NO_CONNECTS_M sy-vline 
WA_SGW_STAT_STR-NO_CONNECTS sy-vline 
WA_SGW_STAT_STR-NO_CMINITS_M sy-vline 
WA_SGW_STAT_STR-NO_CMINITS sy-vline 
WA_SGW_STAT_STR-NO_GWRD_REQ_M sy-vline 
WA_SGW_STAT_STR-NO_GWRD_REQ sy-vline 
WA_SGW_STAT_STR-GWRD_TIME_SEC sy-vline 
WA_SGW_STAT_STR-GWRD_TIME_USEC sy-vline 
WA_SGW_STAT_STR-GWRD_TIME_MIN sy-vline 
WA_SGW_STAT_STR-GWRD_TIME_MAX sy-vline 
WA_SGW_STAT_STR-GWRD_LONGEST_REQ sy-vline 
WA_SGW_STAT_STR-NO_GWWP_REQ_M sy-vline 
WA_SGW_STAT_STR-NO_GWWP_REQ sy-vline 
WA_SGW_STAT_STR-GWWP_TIME_SEC sy-vline 
WA_SGW_STAT_STR-GWWP_TIME_USEC sy-vline 
WA_SGW_STAT_STR-GWWP_TIME_MIN sy-vline 
WA_SGW_STAT_STR-GWWP_TIME_MAX sy-vline 
WA_SGW_STAT_STR-NO_TCP_READ_M sy-vline 
WA_SGW_STAT_STR-NO_TCP_READ sy-vline 
WA_SGW_STAT_STR-NO_TCP_FRAG_READ_M sy-vline 
WA_SGW_STAT_STR-NO_TCP_FRAG_READ sy-vline 
WA_SGW_STAT_STR-TCP_READ_BYTES_M sy-vline 
WA_SGW_STAT_STR-TCP_READ_BYTES sy-vline 
WA_SGW_STAT_STR-TCP_READ_TIME_SEC sy-vline 
WA_SGW_STAT_STR-TCP_READ_TIME_USEC sy-vline 
WA_SGW_STAT_STR-TCP_READ_TIME_MIN sy-vline 
WA_SGW_STAT_STR-TCP_READ_TIME_MAX sy-vline 
WA_SGW_STAT_STR-NO_TCP_WRITE_M sy-vline 
WA_SGW_STAT_STR-NO_TCP_WRITE sy-vline 
WA_SGW_STAT_STR-NO_TCP_FRAG_WRITE_M sy-vline 
WA_SGW_STAT_STR-NO_TCP_FRAG_WRITE sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_BYTES_M sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_BYTES sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_TIME_SEC sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_TIME_USEC sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_TIME_MIN sy-vline 
WA_SGW_STAT_STR-TCP_WRITE_TIME_MAX sy-vline 
WA_SGW_STAT_STR-TCP_ERRORS sy-vline 
WA_SGW_STAT_STR-NO_CPIC_READ_M sy-vline 
WA_SGW_STAT_STR-NO_CPIC_READ sy-vline 
WA_SGW_STAT_STR-CPIC_READ_BYTES_M sy-vline 
WA_SGW_STAT_STR-CPIC_READ_BYTES sy-vline 
WA_SGW_STAT_STR-CPIC_READ_TIME_SEC sy-vline 
WA_SGW_STAT_STR-CPIC_READ_TIME_USEC sy-vline 
WA_SGW_STAT_STR-CPIC_READ_TIME_MIN sy-vline 
WA_SGW_STAT_STR-CPIC_READ_TIME_MAX sy-vline 
WA_SGW_STAT_STR-NO_CPIC_WRITE_M sy-vline 
WA_SGW_STAT_STR-NO_CPIC_WRITE sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_BYTES_M sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_BYTES sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_TIME_SEC sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_TIME_USEC sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_TIME_MIN sy-vline 
WA_SGW_STAT_STR-CPIC_WRITE_TIME_MAX sy-vline 
WA_SGW_STAT_STR-CPIC_ERRORS sy-vline 
WA_SGW_STAT_STR-CONV_NO sy-vline 
WA_SGW_STAT_STR-TCP_CONV_NO sy-vline 
WA_SGW_STAT_STR-SNA_CONV_NO sy-vline 
WA_SGW_STAT_STR-MAX_OVERFLOW_SIZE sy-vline 
WA_SGW_STAT_STR-MAX_CONN sy-vline 
WA_SGW_STAT_STR-PENDING_REQ_PEAK sy-vline 
WA_SGW_STAT_STR-MAX_SHM_REQ sy-vline 
WA_SGW_STAT_STR-REQ_STACK_SIZE sy-vline 
WA_SGW_STAT_STR-ACT_MAX_DATA_STACK sy-vline 
WA_SGW_STAT_STR-CONN_WITH_ACT_MAX_DATA_STACK sy-vline      INTO ld_text SEPARATED BY SPACE.

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