ABAP Select data from SAP table ACIVALLINE_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACIVALLINE_I
*  INTO TABLE @DATA(IT_ACIVALLINE_I2).
*--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_ACIVALLINE_I INDEX 1 INTO DATA(WA_ACIVALLINE_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACIVALLINE_I>-KOSTL = 1.
<ACIVALLINE_I>-LSTAR = 1.
<ACIVALLINE_I>-PRZNR = 1.
<ACIVALLINE_I>-AUFNR = 1.
<ACIVALLINE_I>-POSID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACIVALLINE_I-P_KOSTL, sy-vline,
  WA_ACIVALLINE_I-P_LSTAR, sy-vline,
  WA_ACIVALLINE_I-P_PRZNR, sy-vline,
  WA_ACIVALLINE_I-KSTAR, sy-vline,
  WA_ACIVALLINE_I-MEF001, sy-vline,
  WA_ACIVALLINE_I-MEF002, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACIVALLINE_I 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_ACIVALLINE_I 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_ACIVALLINE_I INTO WA_ACIVALLINE_I.


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

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

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

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_ACIVALLINE_I-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACIVALLINE_I-POSID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field REC_GRANT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACIVALLINE_I-REC_GRANT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACIVALLINE_I-REC_GRANT.
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_ACIVALLINE_I_STR, 
KOSTL TYPE STRING,
LSTAR TYPE STRING,
PRZNR TYPE STRING,
AUFNR TYPE STRING,
POSID TYPE STRING,
P_KOSTL TYPE STRING,
P_LSTAR TYPE STRING,
P_PRZNR TYPE STRING,
KSTAR TYPE STRING,
MEF001 TYPE STRING,
MEF002 TYPE STRING,
MEF003 TYPE STRING,
MEF004 TYPE STRING,
MEF005 TYPE STRING,
MEF006 TYPE STRING,
MEF007 TYPE STRING,
MEF008 TYPE STRING,
MEF009 TYPE STRING,
MEF010 TYPE STRING,
MEF011 TYPE STRING,
MEF012 TYPE STRING,
MEF013 TYPE STRING,
MEF014 TYPE STRING,
MEF015 TYPE STRING,
MEF016 TYPE STRING,
MEV001 TYPE STRING,
MEV002 TYPE STRING,
MEV003 TYPE STRING,
MEV004 TYPE STRING,
MEV005 TYPE STRING,
MEV006 TYPE STRING,
MEV007 TYPE STRING,
MEV008 TYPE STRING,
MEV009 TYPE STRING,
MEV010 TYPE STRING,
MEV011 TYPE STRING,
MEV012 TYPE STRING,
MEV013 TYPE STRING,
MEV014 TYPE STRING,
MEV015 TYPE STRING,
MEV016 TYPE STRING,
ROW_ID TYPE STRING,
SEND_FUND TYPE STRING,
REC_FUND TYPE STRING,
SEND_FUNCTION TYPE STRING,
REC_FUNCTION TYPE STRING,
SEND_GRANT TYPE STRING,
REC_GRANT TYPE STRING,
SEND_BUDGET_PD TYPE STRING,
REC_BUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACIVALLINE_I_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_ACIVALLINE_I_STR-KOSTL sy-vline 
WA_ACIVALLINE_I_STR-LSTAR sy-vline 
WA_ACIVALLINE_I_STR-PRZNR sy-vline 
WA_ACIVALLINE_I_STR-AUFNR sy-vline 
WA_ACIVALLINE_I_STR-POSID sy-vline 
WA_ACIVALLINE_I_STR-P_KOSTL sy-vline 
WA_ACIVALLINE_I_STR-P_LSTAR sy-vline 
WA_ACIVALLINE_I_STR-P_PRZNR sy-vline 
WA_ACIVALLINE_I_STR-KSTAR sy-vline 
WA_ACIVALLINE_I_STR-MEF001 sy-vline 
WA_ACIVALLINE_I_STR-MEF002 sy-vline 
WA_ACIVALLINE_I_STR-MEF003 sy-vline 
WA_ACIVALLINE_I_STR-MEF004 sy-vline 
WA_ACIVALLINE_I_STR-MEF005 sy-vline 
WA_ACIVALLINE_I_STR-MEF006 sy-vline 
WA_ACIVALLINE_I_STR-MEF007 sy-vline 
WA_ACIVALLINE_I_STR-MEF008 sy-vline 
WA_ACIVALLINE_I_STR-MEF009 sy-vline 
WA_ACIVALLINE_I_STR-MEF010 sy-vline 
WA_ACIVALLINE_I_STR-MEF011 sy-vline 
WA_ACIVALLINE_I_STR-MEF012 sy-vline 
WA_ACIVALLINE_I_STR-MEF013 sy-vline 
WA_ACIVALLINE_I_STR-MEF014 sy-vline 
WA_ACIVALLINE_I_STR-MEF015 sy-vline 
WA_ACIVALLINE_I_STR-MEF016 sy-vline 
WA_ACIVALLINE_I_STR-MEV001 sy-vline 
WA_ACIVALLINE_I_STR-MEV002 sy-vline 
WA_ACIVALLINE_I_STR-MEV003 sy-vline 
WA_ACIVALLINE_I_STR-MEV004 sy-vline 
WA_ACIVALLINE_I_STR-MEV005 sy-vline 
WA_ACIVALLINE_I_STR-MEV006 sy-vline 
WA_ACIVALLINE_I_STR-MEV007 sy-vline 
WA_ACIVALLINE_I_STR-MEV008 sy-vline 
WA_ACIVALLINE_I_STR-MEV009 sy-vline 
WA_ACIVALLINE_I_STR-MEV010 sy-vline 
WA_ACIVALLINE_I_STR-MEV011 sy-vline 
WA_ACIVALLINE_I_STR-MEV012 sy-vline 
WA_ACIVALLINE_I_STR-MEV013 sy-vline 
WA_ACIVALLINE_I_STR-MEV014 sy-vline 
WA_ACIVALLINE_I_STR-MEV015 sy-vline 
WA_ACIVALLINE_I_STR-MEV016 sy-vline 
WA_ACIVALLINE_I_STR-ROW_ID sy-vline 
WA_ACIVALLINE_I_STR-SEND_FUND sy-vline 
WA_ACIVALLINE_I_STR-REC_FUND sy-vline 
WA_ACIVALLINE_I_STR-SEND_FUNCTION sy-vline 
WA_ACIVALLINE_I_STR-REC_FUNCTION sy-vline 
WA_ACIVALLINE_I_STR-SEND_GRANT sy-vline 
WA_ACIVALLINE_I_STR-REC_GRANT sy-vline 
WA_ACIVALLINE_I_STR-SEND_BUDGET_PD sy-vline 
WA_ACIVALLINE_I_STR-REC_BUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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