ABAP Select data from SAP table P08P1_ABS_SCHEME into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P08P1_ABS_SCHEME 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 P08P1_ABS_SCHEME. 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 P08P1_ABS_SCHEME 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_P08P1_ABS_SCHEME TYPE STANDARD TABLE OF P08P1_ABS_SCHEME,
      WA_P08P1_ABS_SCHEME TYPE P08P1_ABS_SCHEME,
      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: <P08P1_ABS_SCHEME> TYPE P08P1_ABS_SCHEME.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P08P1_ABS_SCHEME.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P08P1_ABS_SCHEME
  INTO TABLE IT_P08P1_ABS_SCHEME.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P08P1_ABS_SCHEME
*  INTO TABLE @DATA(IT_P08P1_ABS_SCHEME2).
*--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_P08P1_ABS_SCHEME INDEX 1 INTO DATA(WA_P08P1_ABS_SCHEME2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P08P1_ABS_SCHEME ASSIGNING <P08P1_ABS_SCHEME>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P08P1_ABS_SCHEME>-COVPA = 1.
<P08P1_ABS_SCHEME>-COVRU = 1.
<P08P1_ABS_SCHEME>-CRABT = 1.
<P08P1_ABS_SCHEME>-CREVC = 1.
<P08P1_ABS_SCHEME>-CRWST = 1.

ENDLOOP.

LOOP AT IT_P08P1_ABS_SCHEME INTO WA_P08P1_ABS_SCHEME.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P08P1_ABS_SCHEME-CRWEN, sy-vline,
  WA_P08P1_ABS_SCHEME-CRNQR, sy-vline,
  WA_P08P1_ABS_SCHEME-WTG, sy-vline,
  WA_P08P1_ABS_SCHEME-WTGLFT, sy-vline,
  WA_P08P1_ABS_SCHEME-LMT, sy-vline,
  WA_P08P1_ABS_SCHEME-LMTLFT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P08P1_ABS_SCHEME 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_P08P1_ABS_SCHEME 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_P08P1_ABS_SCHEME INTO WA_P08P1_ABS_SCHEME.


*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_P08P1_ABS_SCHEME_STR, 
COVPA TYPE STRING,
COVRU TYPE STRING,
CRABT TYPE STRING,
CREVC TYPE STRING,
CRWST TYPE STRING,
CRWEN TYPE STRING,
CRNQR TYPE STRING,
WTG TYPE STRING,
WTGLFT TYPE STRING,
LMT TYPE STRING,
LMTLFT TYPE STRING,
LMTRCH TYPE STRING,
LM2 TYPE STRING,
LM2LFT TYPE STRING,
LM2RCH TYPE STRING,
ENT TYPE STRING,
ENTPTA TYPE STRING,
ENTADJ TYPE STRING,
ENTLFT TYPE STRING,
ENTRUN TYPE STRING,
EXT TYPE STRING,
RED TYPE STRING,
CRPER TYPE STRING,
CRSEQ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P08P1_ABS_SCHEME_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_P08P1_ABS_SCHEME_STR-COVPA sy-vline 
WA_P08P1_ABS_SCHEME_STR-COVRU sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRABT sy-vline 
WA_P08P1_ABS_SCHEME_STR-CREVC sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRWST sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRWEN sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRNQR sy-vline 
WA_P08P1_ABS_SCHEME_STR-WTG sy-vline 
WA_P08P1_ABS_SCHEME_STR-WTGLFT sy-vline 
WA_P08P1_ABS_SCHEME_STR-LMT sy-vline 
WA_P08P1_ABS_SCHEME_STR-LMTLFT sy-vline 
WA_P08P1_ABS_SCHEME_STR-LMTRCH sy-vline 
WA_P08P1_ABS_SCHEME_STR-LM2 sy-vline 
WA_P08P1_ABS_SCHEME_STR-LM2LFT sy-vline 
WA_P08P1_ABS_SCHEME_STR-LM2RCH sy-vline 
WA_P08P1_ABS_SCHEME_STR-ENT sy-vline 
WA_P08P1_ABS_SCHEME_STR-ENTPTA sy-vline 
WA_P08P1_ABS_SCHEME_STR-ENTADJ sy-vline 
WA_P08P1_ABS_SCHEME_STR-ENTLFT sy-vline 
WA_P08P1_ABS_SCHEME_STR-ENTRUN sy-vline 
WA_P08P1_ABS_SCHEME_STR-EXT sy-vline 
WA_P08P1_ABS_SCHEME_STR-RED sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRPER sy-vline 
WA_P08P1_ABS_SCHEME_STR-CRSEQ sy-vline      INTO ld_text SEPARATED BY SPACE.

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