ABAP Select data from SAP table ISU2A_ZW_STRUC_ANL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU2A_ZW_STRUC_ANL 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 ISU2A_ZW_STRUC_ANL. 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 ISU2A_ZW_STRUC_ANL 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_ISU2A_ZW_STRUC_ANL TYPE STANDARD TABLE OF ISU2A_ZW_STRUC_ANL,
      WA_ISU2A_ZW_STRUC_ANL TYPE ISU2A_ZW_STRUC_ANL,
      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: <ISU2A_ZW_STRUC_ANL> TYPE ISU2A_ZW_STRUC_ANL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU2A_ZW_STRUC_ANL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU2A_ZW_STRUC_ANL
  INTO TABLE IT_ISU2A_ZW_STRUC_ANL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU2A_ZW_STRUC_ANL
*  INTO TABLE @DATA(IT_ISU2A_ZW_STRUC_ANL2).
*--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_ISU2A_ZW_STRUC_ANL INDEX 1 INTO DATA(WA_ISU2A_ZW_STRUC_ANL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU2A_ZW_STRUC_ANL ASSIGNING <ISU2A_ZW_STRUC_ANL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU2A_ZW_STRUC_ANL>-ANLAGE = 1.
<ISU2A_ZW_STRUC_ANL>-LOGIKZW = 1.
<ISU2A_ZW_STRUC_ANL>-AB = 1.
<ISU2A_ZW_STRUC_ANL>-BIS = 1.
<ISU2A_ZW_STRUC_ANL>-EQUNR = 1.

ENDLOOP.

LOOP AT IT_ISU2A_ZW_STRUC_ANL INTO WA_ISU2A_ZW_STRUC_ANL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU2A_ZW_STRUC_ANL-ZWNUMMER, sy-vline,
  WA_ISU2A_ZW_STRUC_ANL-ZWTYP, sy-vline,
  WA_ISU2A_ZW_STRUC_ANL-ZWNABR, sy-vline,
  WA_ISU2A_ZW_STRUC_ANL-LOGIKNR, sy-vline,
  WA_ISU2A_ZW_STRUC_ANL-TARIFART, sy-vline,
  WA_ISU2A_ZW_STRUC_ANL-KONDIGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU2A_ZW_STRUC_ANL 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_ISU2A_ZW_STRUC_ANL 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_ISU2A_ZW_STRUC_ANL INTO WA_ISU2A_ZW_STRUC_ANL.


*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 ANLAGE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-ANLAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-ANLAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MASSREAD
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-MASSREAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-MASSREAD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PREISKLA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-PREISKLA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-PREISKLA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RABZUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-RABZUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-RABZUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISU2A_ZW_STRUC_ANL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU2A_ZW_STRUC_ANL-MATNR.
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_ISU2A_ZW_STRUC_ANL_STR, 
ANLAGE TYPE STRING,
LOGIKZW TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
EQUNR TYPE STRING,
ZWNUMMER TYPE STRING,
ZWTYP TYPE STRING,
ZWNABR TYPE STRING,
LOGIKNR TYPE STRING,
TARIFART TYPE STRING,
KONDIGR TYPE STRING,
THGVER TYPE STRING,
MESSDRCK TYPE STRING,
FESTTEMP TYPE STRING,
KZAHLE TYPE STRING,
KZAHLT TYPE STRING,
GASFACTOR TYPE STRING,
ABRFAKT TYPE STRING,
ZWFAKT TYPE STRING,
STANZVOR TYPE STRING,
MASSREAD TYPE STRING,
PROPROZ TYPE STRING,
PROFEST TYPE STRING,
ZEITRAUM TYPE STRING,
GERAET TYPE STRING,
SPARTYP TYPE STRING,
TEMP_AREA TYPE STRING,
PR_AREA_AI TYPE STRING,
CALOR_AREA TYPE STRING,
HOEKORR TYPE STRING,
GAS_PRS_AR TYPE STRING,
CRGPRESS TYPE STRING,
PREISKLA TYPE STRING,
GVERRECH TYPE STRING,
RABZUS TYPE STRING,
BLIWIRK TYPE STRING,
MAIN_REG TYPE STRING,
SEC_REG TYPE STRING,
MATNR TYPE STRING,
PERTYP TYPE STRING,
BACKNO TYPE STRING,
INTSIZEID TYPE STRING,
QD_PROC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU2A_ZW_STRUC_ANL_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_ISU2A_ZW_STRUC_ANL_STR-ANLAGE sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-LOGIKZW sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-AB sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-BIS sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-EQUNR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ZWNUMMER sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ZWTYP sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ZWNABR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-LOGIKNR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-TARIFART sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-KONDIGR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-THGVER sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-MESSDRCK sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-FESTTEMP sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-KZAHLE sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-KZAHLT sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-GASFACTOR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ABRFAKT sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ZWFAKT sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-STANZVOR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-MASSREAD sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-PROPROZ sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-PROFEST sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-ZEITRAUM sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-GERAET sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-SPARTYP sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-TEMP_AREA sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-PR_AREA_AI sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-CALOR_AREA sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-HOEKORR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-GAS_PRS_AR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-CRGPRESS sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-PREISKLA sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-GVERRECH sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-RABZUS sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-BLIWIRK sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-MAIN_REG sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-SEC_REG sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-MATNR sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-PERTYP sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-BACKNO sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-INTSIZEID sy-vline 
WA_ISU2A_ZW_STRUC_ANL_STR-QD_PROC sy-vline      INTO ld_text SEPARATED BY SPACE.

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