ABAP Select data from SAP table HRSFEC_D_SEQKEYM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRSFEC_D_SEQKEYM
*  INTO TABLE @DATA(IT_HRSFEC_D_SEQKEYM2).
*--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_HRSFEC_D_SEQKEYM INDEX 1 INTO DATA(WA_HRSFEC_D_SEQKEYM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRSFEC_D_SEQKEYM>-MANDT = 1.
<HRSFEC_D_SEQKEYM>-PERNR = 1.
<HRSFEC_D_SEQKEYM>-NODE_NAME = 1.
<HRSFEC_D_SEQKEYM>-EC_ID = 1.
<HRSFEC_D_SEQKEYM>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRSFEC_D_SEQKEYM-SUBTY, sy-vline,
  WA_HRSFEC_D_SEQKEYM-OBJPS, sy-vline,
  WA_HRSFEC_D_SEQKEYM-SPRPS, sy-vline,
  WA_HRSFEC_D_SEQKEYM-ENDDA, sy-vline,
  WA_HRSFEC_D_SEQKEYM-BEGDA, sy-vline,
  WA_HRSFEC_D_SEQKEYM-SEQNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRSFEC_D_SEQKEYM 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_HRSFEC_D_SEQKEYM 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_HRSFEC_D_SEQKEYM INTO WA_HRSFEC_D_SEQKEYM.


*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_HRSFEC_D_SEQKEYM_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
NODE_NAME TYPE STRING,
EC_ID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRSFEC_D_SEQKEYM_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_HRSFEC_D_SEQKEYM_STR-MANDT sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-PERNR sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-NODE_NAME sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-EC_ID sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-INFTY sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-SUBTY sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-OBJPS sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-SPRPS sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-ENDDA sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-BEGDA sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-SEQNR sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-AEDTM sy-vline 
WA_HRSFEC_D_SEQKEYM_STR-UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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