ABAP Select data from SAP table ISI_ACCT_DETAIL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISI_ACCT_DETAIL
*  INTO TABLE @DATA(IT_ISI_ACCT_DETAIL2).
*--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_ISI_ACCT_DETAIL INDEX 1 INTO DATA(WA_ISI_ACCT_DETAIL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISI_ACCT_DETAIL>-SEL_ACCT = 1.
<ISI_ACCT_DETAIL>-ACCTNO = 1.
<ISI_ACCT_DETAIL>-CUSTOMER_EXT = 1.
<ISI_ACCT_DETAIL>-CUSTOMER_TYPE = 1.
<ISI_ACCT_DETAIL>-CUSTOMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISI_ACCT_DETAIL-VENDOR_TYPE, sy-vline,
  WA_ISI_ACCT_DETAIL-VENDOR, sy-vline,
  WA_ISI_ACCT_DETAIL-RET_MATERIAL, sy-vline,
  WA_ISI_ACCT_DETAIL-BUKRS, sy-vline,
  WA_ISI_ACCT_DETAIL-ACCTBAL, sy-vline,
  WA_ISI_ACCT_DETAIL-UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISI_ACCT_DETAIL 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_ISI_ACCT_DETAIL 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_ISI_ACCT_DETAIL INTO WA_ISI_ACCT_DETAIL.


*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 ACCTNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISI_ACCT_DETAIL-ACCTNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_ACCT_DETAIL-ACCTNO.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit ISOLA, internal->external for field TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ISI_ACCT_DETAIL-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISI_ACCT_DETAIL-TDSPRAS.
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_ISI_ACCT_DETAIL_STR, 
SEL_ACCT TYPE STRING,
ACCTNO TYPE STRING,
CUSTOMER_EXT TYPE STRING,
CUSTOMER_TYPE TYPE STRING,
CUSTOMER TYPE STRING,
VENDOR_TYPE TYPE STRING,
VENDOR TYPE STRING,
RET_MATERIAL TYPE STRING,
BUKRS TYPE STRING,
ACCTBAL TYPE STRING,
UNIT TYPE STRING,
NRART TYPE STRING,
PARNR TYPE STRING,
ROLEACM TYPE STRING,
SEQNO TYPE STRING,
REF_PURCH_DOC TYPE STRING,
ACST_CTRL TYPE STRING,
ACST_CREATE_CTRL TYPE STRING,
BALDATE_OLD TYPE STRING,
POSTNEW TYPE STRING,
STATUS TYPE STRING,
PARTNO TYPE STRING,
USE_ACSTCREA TYPE STRING,
USE_OUTPUT TYPE STRING,
USE_MATCH TYPE STRING,
ACST_CHNGTYPE TYPE STRING,
ACST_CPSTATEHD TYPE STRING,
POSTINGS_STRUCT TYPE STRING,
POSTINGS TYPE STRING,
ACST_STRUCT TYPE STRING,
MANDT TYPE STRING,
ACSTNO TYPE STRING,
CHNGTYPE TYPE STRING,
TRMNO_INT TYPE STRING,
PARTNO TYPE STRING,
CUSTNO_PR TYPE STRING,
SUPPNO_PR TYPE STRING,
MATCUSTNO TYPE STRING,
MATSUPPNO TYPE STRING,
MATGR TYPE STRING,
BALDATE TYPE STRING,
BAL TYPE STRING,
ACSTUM TYPE STRING,
BALDATE_OLD TYPE STRING,
BAL_OLD TYPE STRING,
ACCTNO TYPE STRING,
ACCTNO_S TYPE STRING,
CPSTATEHD TYPE STRING,
ITEMS TYPE STRING,
USE_OUTPUT TYPE STRING,
USE_MATCH TYPE STRING,
MIME_DATA TYPE STRING,
DATA TYPE STRING,
LENGTH TYPE STRING,
TYPE TYPE STRING,
ITEM_DISP TYPE STRING,
TEXT TYPE STRING,
TDOBJECT TYPE STRING,
TDNAME TYPE STRING,
TDID TYPE STRING,
TDSPRAS TYPE STRING,
TLINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISI_ACCT_DETAIL_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_ISI_ACCT_DETAIL_STR-SEL_ACCT sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACCTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-CUSTOMER_EXT sy-vline 
WA_ISI_ACCT_DETAIL_STR-CUSTOMER_TYPE sy-vline 
WA_ISI_ACCT_DETAIL_STR-CUSTOMER sy-vline 
WA_ISI_ACCT_DETAIL_STR-VENDOR_TYPE sy-vline 
WA_ISI_ACCT_DETAIL_STR-VENDOR sy-vline 
WA_ISI_ACCT_DETAIL_STR-RET_MATERIAL sy-vline 
WA_ISI_ACCT_DETAIL_STR-BUKRS sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACCTBAL sy-vline 
WA_ISI_ACCT_DETAIL_STR-UNIT sy-vline 
WA_ISI_ACCT_DETAIL_STR-NRART sy-vline 
WA_ISI_ACCT_DETAIL_STR-PARNR sy-vline 
WA_ISI_ACCT_DETAIL_STR-ROLEACM sy-vline 
WA_ISI_ACCT_DETAIL_STR-SEQNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-REF_PURCH_DOC sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACST_CTRL sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACST_CREATE_CTRL sy-vline 
WA_ISI_ACCT_DETAIL_STR-BALDATE_OLD sy-vline 
WA_ISI_ACCT_DETAIL_STR-POSTNEW sy-vline 
WA_ISI_ACCT_DETAIL_STR-STATUS sy-vline 
WA_ISI_ACCT_DETAIL_STR-PARTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-USE_ACSTCREA sy-vline 
WA_ISI_ACCT_DETAIL_STR-USE_OUTPUT sy-vline 
WA_ISI_ACCT_DETAIL_STR-USE_MATCH sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACST_CHNGTYPE sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACST_CPSTATEHD sy-vline 
WA_ISI_ACCT_DETAIL_STR-POSTINGS_STRUCT sy-vline 
WA_ISI_ACCT_DETAIL_STR-POSTINGS sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACST_STRUCT sy-vline 
WA_ISI_ACCT_DETAIL_STR-MANDT sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACSTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-CHNGTYPE sy-vline 
WA_ISI_ACCT_DETAIL_STR-TRMNO_INT sy-vline 
WA_ISI_ACCT_DETAIL_STR-PARTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-CUSTNO_PR sy-vline 
WA_ISI_ACCT_DETAIL_STR-SUPPNO_PR sy-vline 
WA_ISI_ACCT_DETAIL_STR-MATCUSTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-MATSUPPNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-MATGR sy-vline 
WA_ISI_ACCT_DETAIL_STR-BALDATE sy-vline 
WA_ISI_ACCT_DETAIL_STR-BAL sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACSTUM sy-vline 
WA_ISI_ACCT_DETAIL_STR-BALDATE_OLD sy-vline 
WA_ISI_ACCT_DETAIL_STR-BAL_OLD sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACCTNO sy-vline 
WA_ISI_ACCT_DETAIL_STR-ACCTNO_S sy-vline 
WA_ISI_ACCT_DETAIL_STR-CPSTATEHD sy-vline 
WA_ISI_ACCT_DETAIL_STR-ITEMS sy-vline 
WA_ISI_ACCT_DETAIL_STR-USE_OUTPUT sy-vline 
WA_ISI_ACCT_DETAIL_STR-USE_MATCH sy-vline 
WA_ISI_ACCT_DETAIL_STR-MIME_DATA sy-vline 
WA_ISI_ACCT_DETAIL_STR-DATA sy-vline 
WA_ISI_ACCT_DETAIL_STR-LENGTH sy-vline 
WA_ISI_ACCT_DETAIL_STR-TYPE sy-vline 
WA_ISI_ACCT_DETAIL_STR-ITEM_DISP sy-vline 
WA_ISI_ACCT_DETAIL_STR-TEXT sy-vline 
WA_ISI_ACCT_DETAIL_STR-TDOBJECT sy-vline 
WA_ISI_ACCT_DETAIL_STR-TDNAME sy-vline 
WA_ISI_ACCT_DETAIL_STR-TDID sy-vline 
WA_ISI_ACCT_DETAIL_STR-TDSPRAS sy-vline 
WA_ISI_ACCT_DETAIL_STR-TLINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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