ABAP Select data from SAP table PRA_S_GAS_STATEMENT_ITEMS_PDF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PRA_S_GAS_STATEMENT_ITEMS_PDF
*  INTO TABLE @DATA(IT_PRA_S_GAS_STATEMENT_ITEMS_PDF2).
*--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_PRA_S_GAS_STATEMENT_ITEMS_PDF INDEX 1 INTO DATA(WA_PRA_S_GAS_STATEMENT_ITEMS_PDF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PRA_S_GAS_STATEMENT_ITEMS_PDF>-GASRPTH_NO = 1.
<PRA_S_GAS_STATEMENT_ITEMS_PDF>-EFF_FROM_DT = 1.
<PRA_S_GAS_STATEMENT_ITEMS_PDF>-EFF_TO_DT = 1.
<PRA_S_GAS_STATEMENT_ITEMS_PDF>-ACTL_GR_VL = 1.
<PRA_S_GAS_STATEMENT_ITEMS_PDF>-VOLUME_UNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-VL_TYPE_CD, sy-vline,
  WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-TRNSP_NO, sy-vline,
  WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-WI_OWN_ISQ_NO, sy-vline,
  WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-ACT_HEAT_VAL_FCT, sy-vline,
  WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-HEAT_VALUE_FCT_U, sy-vline,
  WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-PC_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PRA_S_GAS_STATEMENT_ITEMS_PDF 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_PRA_S_GAS_STATEMENT_ITEMS_PDF 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_PRA_S_GAS_STATEMENT_ITEMS_PDF INTO WA_PRA_S_GAS_STATEMENT_ITEMS_PDF.


*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 VOLUME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-VOLUME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-VOLUME_UNIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field DENSITY_U
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-DENSITY_U
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PRA_S_GAS_STATEMENT_ITEMS_PDF-DENSITY_U.
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_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR, 
GASRPTH_NO TYPE STRING,
EFF_FROM_DT TYPE STRING,
EFF_TO_DT TYPE STRING,
ACTL_GR_VL TYPE STRING,
VOLUME_UNIT TYPE STRING,
VL_TYPE_CD TYPE STRING,
TRNSP_NO TYPE STRING,
WI_OWN_ISQ_NO TYPE STRING,
ACT_HEAT_VAL_FCT TYPE STRING,
HEAT_VALUE_FCT_U TYPE STRING,
PC_AMT TYPE STRING,
PC_CURR TYPE STRING,
ACTL_GR_VAL_AM TYPE STRING,
VOLUME_AM TYPE STRING,
TRNSP_REF_NO TYPE STRING,
RUN_TKT_NO TYPE STRING,
DENSITY TYPE STRING,
GROSS_VAL_AM TYPE STRING,
DENSITY_U TYPE STRING,
MON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_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_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-GASRPTH_NO sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-EFF_FROM_DT sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-EFF_TO_DT sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-ACTL_GR_VL sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-VOLUME_UNIT sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-VL_TYPE_CD sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-TRNSP_NO sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-WI_OWN_ISQ_NO sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-ACT_HEAT_VAL_FCT sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-HEAT_VALUE_FCT_U sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-PC_AMT sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-PC_CURR sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-ACTL_GR_VAL_AM sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-VOLUME_AM sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-TRNSP_REF_NO sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-RUN_TKT_NO sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-DENSITY sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-GROSS_VAL_AM sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-DENSITY_U sy-vline 
WA_PRA_S_GAS_STATEMENT_ITEMS_PDF_STR-MON sy-vline      INTO ld_text SEPARATED BY SPACE.

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