ABAP Select data from SAP table RKE_POST_LOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RKE_POST_LOG
*  INTO TABLE @DATA(IT_RKE_POST_LOG2).
*--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_RKE_POST_LOG INDEX 1 INTO DATA(WA_RKE_POST_LOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RKE_POST_LOG>-MANDT = 1.
<RKE_POST_LOG>-ERKRS = 1.
<RKE_POST_LOG>-RUNID = 1.
<RKE_POST_LOG>-DATUM = 1.
<RKE_POST_LOG>-TIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RKE_POST_LOG-USNAM, sy-vline,
  WA_RKE_POST_LOG-PLIKZ, sy-vline,
  WA_RKE_POST_LOG-SOURCE_SYSTEM, sy-vline,
  WA_RKE_POST_LOG-RFC_TYPE, sy-vline,
  WA_RKE_POST_LOG-SOURCE_PROG, sy-vline,
  WA_RKE_POST_LOG-TESTRUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RKE_POST_LOG 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_RKE_POST_LOG 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_RKE_POST_LOG INTO WA_RKE_POST_LOG.


*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_RKE_POST_LOG_STR, 
MANDT TYPE STRING,
ERKRS TYPE STRING,
RUNID TYPE STRING,
DATUM TYPE STRING,
TIME TYPE STRING,
USNAM TYPE STRING,
PLIKZ TYPE STRING,
SOURCE_SYSTEM TYPE STRING,
RFC_TYPE TYPE STRING,
SOURCE_PROG TYPE STRING,
TESTRUN TYPE STRING,
DERIVE TYPE STRING,
VALUATE TYPE STRING,
CHECK_CHARAC TYPE STRING,
CHECK_ORG_UNITS TYPE STRING,
ADD_MISSING_LED TYPE STRING,
POST_PLAN_DELTA TYPE STRING,
PLAN_DATA_EXCLUD TYPE STRING,
PROVIDED_B0 TYPE STRING,
PROVIDED_10 TYPE STRING,
PROVIDED_B2 TYPE STRING,
PROVIDED_12 TYPE STRING,
TIMESTAMP_FROM TYPE STRING,
NU_ITEMS_PROVID TYPE STRING,
NU_ITEMS_POSTED TYPE STRING,
SEVERITY TYPE STRING,
FIRST_ERROR_ITEM TYPE STRING,
PACKAGES_POSTED TYPE STRING,
RUNTIME_TOTAL TYPE STRING,
RUNTIME_CHECK TYPE STRING,
RUNTIME_DERI TYPE STRING,
RUNTIME_VALU TYPE STRING,
RUNTIME_CE4 TYPE STRING,
RUNTIME_POST TYPE STRING,
RUNTIME_READ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RKE_POST_LOG_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_RKE_POST_LOG_STR-MANDT sy-vline 
WA_RKE_POST_LOG_STR-ERKRS sy-vline 
WA_RKE_POST_LOG_STR-RUNID sy-vline 
WA_RKE_POST_LOG_STR-DATUM sy-vline 
WA_RKE_POST_LOG_STR-TIME sy-vline 
WA_RKE_POST_LOG_STR-USNAM sy-vline 
WA_RKE_POST_LOG_STR-PLIKZ sy-vline 
WA_RKE_POST_LOG_STR-SOURCE_SYSTEM sy-vline 
WA_RKE_POST_LOG_STR-RFC_TYPE sy-vline 
WA_RKE_POST_LOG_STR-SOURCE_PROG sy-vline 
WA_RKE_POST_LOG_STR-TESTRUN sy-vline 
WA_RKE_POST_LOG_STR-DERIVE sy-vline 
WA_RKE_POST_LOG_STR-VALUATE sy-vline 
WA_RKE_POST_LOG_STR-CHECK_CHARAC sy-vline 
WA_RKE_POST_LOG_STR-CHECK_ORG_UNITS sy-vline 
WA_RKE_POST_LOG_STR-ADD_MISSING_LED sy-vline 
WA_RKE_POST_LOG_STR-POST_PLAN_DELTA sy-vline 
WA_RKE_POST_LOG_STR-PLAN_DATA_EXCLUD sy-vline 
WA_RKE_POST_LOG_STR-PROVIDED_B0 sy-vline 
WA_RKE_POST_LOG_STR-PROVIDED_10 sy-vline 
WA_RKE_POST_LOG_STR-PROVIDED_B2 sy-vline 
WA_RKE_POST_LOG_STR-PROVIDED_12 sy-vline 
WA_RKE_POST_LOG_STR-TIMESTAMP_FROM sy-vline 
WA_RKE_POST_LOG_STR-NU_ITEMS_PROVID sy-vline 
WA_RKE_POST_LOG_STR-NU_ITEMS_POSTED sy-vline 
WA_RKE_POST_LOG_STR-SEVERITY sy-vline 
WA_RKE_POST_LOG_STR-FIRST_ERROR_ITEM sy-vline 
WA_RKE_POST_LOG_STR-PACKAGES_POSTED sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_TOTAL sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_CHECK sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_DERI sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_VALU sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_CE4 sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_POST sy-vline 
WA_RKE_POST_LOG_STR-RUNTIME_READ sy-vline      INTO ld_text SEPARATED BY SPACE.

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