ABAP Select data from SAP table SESTA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SESTA 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 SESTA. 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 SESTA 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_SESTA TYPE STANDARD TABLE OF SESTA,
      WA_SESTA TYPE SESTA,
      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: <SESTA> TYPE SESTA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SESTA
*  INTO TABLE @DATA(IT_SESTA2).
*--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_SESTA INDEX 1 INTO DATA(WA_SESTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SESTA>-MANDT = 1.
<SESTA>-MATNR = 1.
<SESTA>-WERKS = 1.
<SESTA>-VERID = 1.
<SESTA>-MDV01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SESTA-MDV02, sy-vline,
  WA_SESTA-VERTO, sy-vline,
  WA_SESTA-STLAL, sy-vline,
  WA_SESTA-STLAN, sy-vline,
  WA_SESTA-PLNTY, sy-vline,
  WA_SESTA-PLNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SESTA 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_SESTA 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_SESTA INTO WA_SESTA.


*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.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-APLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-APLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-PLNNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-PLNNG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-ALNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-ALNAG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-PLNNM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-PLNNM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ALNAM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-ALNAM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-ALNAM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PKOSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-PKOSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-PKOSA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SESTA-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SESTA-QPLOS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SESTA_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
VERID TYPE STRING,
MDV01 TYPE STRING,
MDV02 TYPE STRING,
VERTO TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
APLAL TYPE STRING,
PLTYG TYPE STRING,
PLNNG TYPE STRING,
ALNAG TYPE STRING,
PLTYM TYPE STRING,
PLNNM TYPE STRING,
ALNAM TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
AUFNR TYPE STRING,
PKOSA TYPE STRING,
STDAY TYPE STRING,
ENDAY TYPE STRING,
PHAS0 TYPE STRING,
PLRST TYPE STRING,
PERIO TYPE STRING,
DISPO TYPE STRING,
RSNUM TYPE STRING,
ALORT TYPE STRING,
QPLOS TYPE STRING,
AUART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SESTA_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_SESTA_STR-MANDT sy-vline 
WA_SESTA_STR-MATNR sy-vline 
WA_SESTA_STR-WERKS sy-vline 
WA_SESTA_STR-VERID sy-vline 
WA_SESTA_STR-MDV01 sy-vline 
WA_SESTA_STR-MDV02 sy-vline 
WA_SESTA_STR-VERTO sy-vline 
WA_SESTA_STR-STLAL sy-vline 
WA_SESTA_STR-STLAN sy-vline 
WA_SESTA_STR-PLNTY sy-vline 
WA_SESTA_STR-PLNNR sy-vline 
WA_SESTA_STR-APLAL sy-vline 
WA_SESTA_STR-PLTYG sy-vline 
WA_SESTA_STR-PLNNG sy-vline 
WA_SESTA_STR-ALNAG sy-vline 
WA_SESTA_STR-PLTYM sy-vline 
WA_SESTA_STR-PLNNM sy-vline 
WA_SESTA_STR-ALNAM sy-vline 
WA_SESTA_STR-BSTMI sy-vline 
WA_SESTA_STR-BSTMA sy-vline 
WA_SESTA_STR-AUFNR sy-vline 
WA_SESTA_STR-PKOSA sy-vline 
WA_SESTA_STR-STDAY sy-vline 
WA_SESTA_STR-ENDAY sy-vline 
WA_SESTA_STR-PHAS0 sy-vline 
WA_SESTA_STR-PLRST sy-vline 
WA_SESTA_STR-PERIO sy-vline 
WA_SESTA_STR-DISPO sy-vline 
WA_SESTA_STR-RSNUM sy-vline 
WA_SESTA_STR-ALORT sy-vline 
WA_SESTA_STR-QPLOS sy-vline 
WA_SESTA_STR-AUART sy-vline      INTO ld_text SEPARATED BY SPACE.

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