ABAP Select data from SAP table WB2_DISPATCHER_PARAMETERS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WB2_DISPATCHER_PARAMETERS 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 WB2_DISPATCHER_PARAMETERS. 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 WB2_DISPATCHER_PARAMETERS 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_WB2_DISPATCHER_PARAMETERS TYPE STANDARD TABLE OF WB2_DISPATCHER_PARAMETERS,
      WA_WB2_DISPATCHER_PARAMETERS TYPE WB2_DISPATCHER_PARAMETERS,
      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: <WB2_DISPATCHER_PARAMETERS> TYPE WB2_DISPATCHER_PARAMETERS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WB2_DISPATCHER_PARAMETERS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WB2_DISPATCHER_PARAMETERS
  INTO TABLE IT_WB2_DISPATCHER_PARAMETERS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WB2_DISPATCHER_PARAMETERS
*  INTO TABLE @DATA(IT_WB2_DISPATCHER_PARAMETERS2).
*--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_WB2_DISPATCHER_PARAMETERS INDEX 1 INTO DATA(WA_WB2_DISPATCHER_PARAMETERS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WB2_DISPATCHER_PARAMETERS ASSIGNING <WB2_DISPATCHER_PARAMETERS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WB2_DISPATCHER_PARAMETERS>-PARTNER = 1.
<WB2_DISPATCHER_PARAMETERS>-PARTNER_SEL_ONLY = 1.
<WB2_DISPATCHER_PARAMETERS>-REPID = 1.
<WB2_DISPATCHER_PARAMETERS>-SIMULATION = 1.
<WB2_DISPATCHER_PARAMETERS>-MONITOR_JOBS = 1.

ENDLOOP.

LOOP AT IT_WB2_DISPATCHER_PARAMETERS INTO WA_WB2_DISPATCHER_PARAMETERS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WB2_DISPATCHER_PARAMETERS-MONITOR_TIME, sy-vline,
  WA_WB2_DISPATCHER_PARAMETERS-MONITOR_INTERV, sy-vline,
  WA_WB2_DISPATCHER_PARAMETERS-PREFIX_JOBNAME, sy-vline,
  WA_WB2_DISPATCHER_PARAMETERS-JOB_USER_PRINT, sy-vline,
  WA_WB2_DISPATCHER_PARAMETERS-START_IMMEDIATE, sy-vline,
  WA_WB2_DISPATCHER_PARAMETERS-START_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WB2_DISPATCHER_PARAMETERS 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_WB2_DISPATCHER_PARAMETERS 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_WB2_DISPATCHER_PARAMETERS INTO WA_WB2_DISPATCHER_PARAMETERS.


*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_WB2_DISPATCHER_PARAMETERS_STR, 
PARTNER TYPE STRING,
PARTNER_SEL_ONLY TYPE STRING,
REPID TYPE STRING,
SIMULATION TYPE STRING,
MONITOR_JOBS TYPE STRING,
MONITOR_TIME TYPE STRING,
MONITOR_INTERV TYPE STRING,
PREFIX_JOBNAME TYPE STRING,
JOB_USER_PRINT TYPE STRING,
START_IMMEDIATE TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
START_EVENT TYPE STRING,
START_EVENTID TYPE STRING,
JOB_USER TYPE STRING,
SERVER_NAME TYPE STRING,
SERVER_GROUP TYPE STRING,
SPLIT_PARTNER TYPE STRING,
SPLIT_PARTNERPJ TYPE STRING,
SPLIT_DOC TYPE STRING,
SPLIT_DOCPJ TYPE STRING,
SPLIT_JOBS TYPE STRING,
SPLIT_JOBS_NMBR TYPE STRING,
NO_JOB TYPE STRING,
ERROR_NO_DOCS TYPE STRING,
CHECK_CONSIST TYPE STRING,
FIELD_TKONN TYPE STRING,
FIELD_PARTNER TYPE STRING,
MAX_JOBS TYPE STRING,
LOCK_ALL_DOCS TYPE STRING,
BTBSTA_SD TYPE STRING,
TOLERANCE_SD TYPE STRING,
OUTPUT_ERR_SD TYPE STRING,
DISVARIANT_SD TYPE STRING,
START_EVENTPA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WB2_DISPATCHER_PARAMETERS_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_WB2_DISPATCHER_PARAMETERS_STR-PARTNER sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-PARTNER_SEL_ONLY sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-REPID sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SIMULATION sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-MONITOR_JOBS sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-MONITOR_TIME sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-MONITOR_INTERV sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-PREFIX_JOBNAME sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-JOB_USER_PRINT sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_IMMEDIATE sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_DATE sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_TIME sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_EVENT sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_EVENTID sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-JOB_USER sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SERVER_NAME sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SERVER_GROUP sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_PARTNER sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_PARTNERPJ sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_DOC sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_DOCPJ sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_JOBS sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-SPLIT_JOBS_NMBR sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-NO_JOB sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-ERROR_NO_DOCS sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-CHECK_CONSIST sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-FIELD_TKONN sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-FIELD_PARTNER sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-MAX_JOBS sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-LOCK_ALL_DOCS sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-BTBSTA_SD sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-TOLERANCE_SD sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-OUTPUT_ERR_SD sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-DISVARIANT_SD sy-vline 
WA_WB2_DISPATCHER_PARAMETERS_STR-START_EVENTPA sy-vline      INTO ld_text SEPARATED BY SPACE.

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