ABAP Select data from SAP table WSRMB_SEQ_HDR_P into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSRMB_SEQ_HDR_P
*  INTO TABLE @DATA(IT_WSRMB_SEQ_HDR_P2).
*--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_WSRMB_SEQ_HDR_P INDEX 1 INTO DATA(WA_WSRMB_SEQ_HDR_P2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSRMB_SEQ_HDR_P>-MANDT = 1.
<WSRMB_SEQ_HDR_P>-SEQ_ID_INT = 1.
<WSRMB_SEQ_HDR_P>-SEQ_ID_FLAVOUR = 1.
<WSRMB_SEQ_HDR_P>-LOGICAL_SEQ_ID = 1.
<WSRMB_SEQ_HDR_P>-STATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSRMB_SEQ_HDR_P-IA_PATTERN, sy-vline,
  WA_WSRMB_SEQ_HDR_P-MAX_RECEIVED, sy-vline,
  WA_WSRMB_SEQ_HDR_P-MAX_DELIVERED, sy-vline,
  WA_WSRMB_SEQ_HDR_P-SINGLE_ACK_RANGE, sy-vline,
  WA_WSRMB_SEQ_HDR_P-ACK_HIGH, sy-vline,
  WA_WSRMB_SEQ_HDR_P-ACK_LOW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSRMB_SEQ_HDR_P 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_WSRMB_SEQ_HDR_P 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_WSRMB_SEQ_HDR_P INTO WA_WSRMB_SEQ_HDR_P.


*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_WSRMB_SEQ_HDR_P_STR, 
MANDT TYPE STRING,
SEQ_ID_INT TYPE STRING,
SEQ_ID_FLAVOUR TYPE STRING,
LOGICAL_SEQ_ID TYPE STRING,
STATE TYPE STRING,
IA_PATTERN TYPE STRING,
MAX_RECEIVED TYPE STRING,
MAX_DELIVERED TYPE STRING,
SINGLE_ACK_RANGE TYPE STRING,
ACK_HIGH TYPE STRING,
ACK_LOW TYPE STRING,
LAST_MESSAGE TYPE STRING,
SECURITY TYPE STRING,
SERVICE_DEF TYPE STRING,
WSRM_VERSION TYPE STRING,
CREATED_AT TYPE STRING,
CREATED_BY TYPE STRING,
LAST_CHANGED_AT TYPE STRING,
LAST_CHANGED_BY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSRMB_SEQ_HDR_P_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_WSRMB_SEQ_HDR_P_STR-MANDT sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-SEQ_ID_INT sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-SEQ_ID_FLAVOUR sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-LOGICAL_SEQ_ID sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-STATE sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-IA_PATTERN sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-MAX_RECEIVED sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-MAX_DELIVERED sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-SINGLE_ACK_RANGE sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-ACK_HIGH sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-ACK_LOW sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-LAST_MESSAGE sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-SECURITY sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-SERVICE_DEF sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-WSRM_VERSION sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-CREATED_AT sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-CREATED_BY sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-LAST_CHANGED_AT sy-vline 
WA_WSRMB_SEQ_HDR_P_STR-LAST_CHANGED_BY sy-vline      INTO ld_text SEPARATED BY SPACE.

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