ABAP Select data from SAP table /SAPAPO/TS_RLG_STEPS_FILTER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/TS_RLG_STEPS_FILTER 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 /SAPAPO/TS_RLG_STEPS_FILTER. 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 /SAPAPO/TS_RLG_STEPS_FILTER 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_/SAPAPO/TS_RLG_STEPS_FILTER TYPE STANDARD TABLE OF /SAPAPO/TS_RLG_STEPS_FILTER,
      WA_/SAPAPO/TS_RLG_STEPS_FILTER TYPE /SAPAPO/TS_RLG_STEPS_FILTER,
      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: </SAPAPO/TS_RLG_STEPS_FILTER> TYPE /SAPAPO/TS_RLG_STEPS_FILTER.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/TS_RLG_STEPS_FILTER
  INTO TABLE IT_/SAPAPO/TS_RLG_STEPS_FILTER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/TS_RLG_STEPS_FILTER
*  INTO TABLE @DATA(IT_/SAPAPO/TS_RLG_STEPS_FILTER2).
*--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_/SAPAPO/TS_RLG_STEPS_FILTER INDEX 1 INTO DATA(WA_/SAPAPO/TS_RLG_STEPS_FILTER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/TS_RLG_STEPS_FILTER ASSIGNING </SAPAPO/TS_RLG_STEPS_FILTER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/TS_RLG_STEPS_FILTER>-RLG_STEPS = 1.
</SAPAPO/TS_RLG_STEPS_FILTER>-STATUS = 1.
</SAPAPO/TS_RLG_STEPS_FILTER>-VALIDITY_DATE = 1.
</SAPAPO/TS_RLG_STEPS_FILTER>-RLG_ADM = 1.
</SAPAPO/TS_RLG_STEPS_FILTER>-MANDT = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/TS_RLG_STEPS_FILTER INTO WA_/SAPAPO/TS_RLG_STEPS_FILTER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/TS_RLG_STEPS_FILTER-TABNAME, sy-vline,
  WA_/SAPAPO/TS_RLG_STEPS_FILTER-STEP_ID, sy-vline,
  WA_/SAPAPO/TS_RLG_STEPS_FILTER-CDAT, sy-vline,
  WA_/SAPAPO/TS_RLG_STEPS_FILTER-CTIME, sy-vline,
  WA_/SAPAPO/TS_RLG_STEPS_FILTER-AUTOR, sy-vline,
  WA_/SAPAPO/TS_RLG_STEPS_FILTER-UDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/TS_RLG_STEPS_FILTER 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_/SAPAPO/TS_RLG_STEPS_FILTER 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_/SAPAPO/TS_RLG_STEPS_FILTER INTO WA_/SAPAPO/TS_RLG_STEPS_FILTER.


*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_/SAPAPO/TS_RLG_STEPS_FILTER_STR, 
RLG_STEPS TYPE STRING,
STATUS TYPE STRING,
VALIDITY_DATE TYPE STRING,
RLG_ADM TYPE STRING,
MANDT TYPE STRING,
TABNAME TYPE STRING,
STEP_ID TYPE STRING,
CDAT TYPE STRING,
CTIME TYPE STRING,
AUTOR TYPE STRING,
UDAT TYPE STRING,
UPNAM TYPE STRING,
UTIME TYPE STRING,
FLG_GEN TYPE STRING,
GEN_PROGRAM TYPE STRING,
REQID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/TS_RLG_STEPS_FILTER_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_/SAPAPO/TS_RLG_STEPS_FILTER_STR-RLG_STEPS sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-STATUS sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-VALIDITY_DATE sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-RLG_ADM sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-MANDT sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-TABNAME sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-STEP_ID sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-CDAT sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-CTIME sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-AUTOR sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-UDAT sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-UPNAM sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-UTIME sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-FLG_GEN sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-GEN_PROGRAM sy-vline 
WA_/SAPAPO/TS_RLG_STEPS_FILTER_STR-REQID sy-vline      INTO ld_text SEPARATED BY SPACE.

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