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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/LOC_TPVS_DB
*  INTO TABLE @DATA(IT_/SAPAPO/LOC_TPVS_DB2).
*--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/LOC_TPVS_DB INDEX 1 INTO DATA(WA_/SAPAPO/LOC_TPVS_DB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/LOC_TPVS_DB>-CONSOL_FLG = 1.
</SAPAPO/LOC_TPVS_DB>-COMP_FLG = 1.
</SAPAPO/LOC_TPVS_DB>-TRPCR_TIME = 1.
</SAPAPO/LOC_TPVS_DB>-TRPCR_TIME_UNIT = 1.
</SAPAPO/LOC_TPVS_DB>-COM_TIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/LOC_TPVS_DB-COM_TIME_UNIT, sy-vline,
  WA_/SAPAPO/LOC_TPVS_DB-SETUPKEY, sy-vline,
  WA_/SAPAPO/LOC_TPVS_DB-SCACD, sy-vline,
  WA_/SAPAPO/LOC_TPVS_DB-CONT_MV, sy-vline,
  WA_/SAPAPO/LOC_TPVS_DB-DURAT, sy-vline,
  WA_/SAPAPO/LOC_TPVS_DB-PERF_PCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/LOC_TPVS_DB 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/LOC_TPVS_DB 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/LOC_TPVS_DB INTO WA_/SAPAPO/LOC_TPVS_DB.


*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 CUNIT, internal->external for field TRPCR_TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/LOC_TPVS_DB-TRPCR_TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/LOC_TPVS_DB-TRPCR_TIME_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field COM_TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/LOC_TPVS_DB-COM_TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/LOC_TPVS_DB-COM_TIME_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field DURAT
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/LOC_TPVS_DB-DURAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/LOC_TPVS_DB-DURAT.
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_/SAPAPO/LOC_TPVS_DB_STR, 
CONSOL_FLG TYPE STRING,
COMP_FLG TYPE STRING,
TRPCR_TIME TYPE STRING,
TRPCR_TIME_UNIT TYPE STRING,
COM_TIME TYPE STRING,
COM_TIME_UNIT TYPE STRING,
SETUPKEY TYPE STRING,
SCACD TYPE STRING,
CONT_MV TYPE STRING,
DURAT TYPE STRING,
PERF_PCT TYPE STRING,
FVISIT TYPE STRING,
LVISIT TYPE STRING,
KOSCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/LOC_TPVS_DB_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/LOC_TPVS_DB_STR-CONSOL_FLG sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-COMP_FLG sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-TRPCR_TIME sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-TRPCR_TIME_UNIT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-COM_TIME sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-COM_TIME_UNIT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-SETUPKEY sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-SCACD sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-CONT_MV sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-DURAT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-PERF_PCT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-FVISIT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-LVISIT sy-vline 
WA_/SAPAPO/LOC_TPVS_DB_STR-KOSCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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