ABAP Select data from SAP table DIEQUZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIEQUZ
*  INTO TABLE @DATA(IT_DIEQUZ2).
*--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_DIEQUZ INDEX 1 INTO DATA(WA_DIEQUZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIEQUZ>-EQUNR = 1.
<DIEQUZ>-DATBI = 1.
<DIEQUZ>-EQLFN = 1.
<DIEQUZ>-ERDAT = 1.
<DIEQUZ>-ERNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIEQUZ-AEDAT, sy-vline,
  WA_DIEQUZ-AENAM, sy-vline,
  WA_DIEQUZ-TIMBI, sy-vline,
  WA_DIEQUZ-STNAM, sy-vline,
  WA_DIEQUZ-LVORM, sy-vline,
  WA_DIEQUZ-DATAB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIEQUZ 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_DIEQUZ 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_DIEQUZ INTO WA_DIEQUZ.


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

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

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

*Conversion exit ALPHA, internal->external for field KUND1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-KUND1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-KUND1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUND2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-KUND2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-KUND2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUND3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-KUND3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-KUND3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-TPLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-PROID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field J_3GPMAUFE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-J_3GPMAUFE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-J_3GPMAUFE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_3GPMAUFV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DIEQUZ-J_3GPMAUFV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DIEQUZ-J_3GPMAUFV.
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_DIEQUZ_STR, 
EQUNR TYPE STRING,
DATBI TYPE STRING,
EQLFN TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
TIMBI TYPE STRING,
STNAM TYPE STRING,
LVORM TYPE STRING,
DATAB TYPE STRING,
IWERK TYPE STRING,
IWERKI TYPE STRING,
SUBMT TYPE STRING,
MAPAR TYPE STRING,
HEQUI TYPE STRING,
HEQNR TYPE STRING,
INGRP TYPE STRING,
INGRPI TYPE STRING,
PM_OBJTY TYPE STRING,
GEWRK TYPE STRING,
GEWRKI TYPE STRING,
TIDNR TYPE STRING,
TIDNRI TYPE STRING,
KUND1 TYPE STRING,
KUND2 TYPE STRING,
KUND3 TYPE STRING,
LIZNR TYPE STRING,
RBNR TYPE STRING,
EZDAT TYPE STRING,
EZBER TYPE STRING,
RBNR_I TYPE STRING,
MANDT TYPE STRING,
ILOAN TYPE STRING,
TPLNR TYPE STRING,
ABCKZ TYPE STRING,
ABCKZI TYPE STRING,
EQFNR TYPE STRING,
EQFNRI TYPE STRING,
SWERK TYPE STRING,
SWERKI TYPE STRING,
STORT TYPE STRING,
STORTI TYPE STRING,
MSGRP TYPE STRING,
MSGRPI TYPE STRING,
BEBER TYPE STRING,
BEBERI TYPE STRING,
CR_OBJTY TYPE STRING,
PPSID TYPE STRING,
PPSIDI TYPE STRING,
GSBER TYPE STRING,
GSBERI TYPE STRING,
KOKRS TYPE STRING,
KOKRSI TYPE STRING,
KOSTL TYPE STRING,
KOSTLI TYPE STRING,
PROID TYPE STRING,
PROIDI TYPE STRING,
BUKRS TYPE STRING,
BUKRSI TYPE STRING,
ANLNR TYPE STRING,
ANLNRI TYPE STRING,
ANLUN TYPE STRING,
ANLUNI TYPE STRING,
DAUFN TYPE STRING,
DAUFNI TYPE STRING,
AUFNR TYPE STRING,
AUFNRI TYPE STRING,
TPLNRI TYPE STRING,
VKORG TYPE STRING,
VKORGI TYPE STRING,
VTWEG TYPE STRING,
VTWEGI TYPE STRING,
SPART TYPE STRING,
SPARTI TYPE STRING,
ADRNR TYPE STRING,
ADRNRI TYPE STRING,
OWNER TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
ARBPL TYPE STRING,
GEWRKE TYPE STRING,
NAME_LIST TYPE STRING,
TEL_NUMBER TYPE STRING,
POST_CODE1 TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
STREET TYPE STRING,
STRNO TYPE STRING,
J_3GEIGNER TYPE STRING,
J_3GVERWAL TYPE STRING,
J_3GPMAUFE TYPE STRING,
J_3GPMAUFV TYPE STRING,
J_3GPACHT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIEQUZ_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_DIEQUZ_STR-EQUNR sy-vline 
WA_DIEQUZ_STR-DATBI sy-vline 
WA_DIEQUZ_STR-EQLFN sy-vline 
WA_DIEQUZ_STR-ERDAT sy-vline 
WA_DIEQUZ_STR-ERNAM sy-vline 
WA_DIEQUZ_STR-AEDAT sy-vline 
WA_DIEQUZ_STR-AENAM sy-vline 
WA_DIEQUZ_STR-TIMBI sy-vline 
WA_DIEQUZ_STR-STNAM sy-vline 
WA_DIEQUZ_STR-LVORM sy-vline 
WA_DIEQUZ_STR-DATAB sy-vline 
WA_DIEQUZ_STR-IWERK sy-vline 
WA_DIEQUZ_STR-IWERKI sy-vline 
WA_DIEQUZ_STR-SUBMT sy-vline 
WA_DIEQUZ_STR-MAPAR sy-vline 
WA_DIEQUZ_STR-HEQUI sy-vline 
WA_DIEQUZ_STR-HEQNR sy-vline 
WA_DIEQUZ_STR-INGRP sy-vline 
WA_DIEQUZ_STR-INGRPI sy-vline 
WA_DIEQUZ_STR-PM_OBJTY sy-vline 
WA_DIEQUZ_STR-GEWRK sy-vline 
WA_DIEQUZ_STR-GEWRKI sy-vline 
WA_DIEQUZ_STR-TIDNR sy-vline 
WA_DIEQUZ_STR-TIDNRI sy-vline 
WA_DIEQUZ_STR-KUND1 sy-vline 
WA_DIEQUZ_STR-KUND2 sy-vline 
WA_DIEQUZ_STR-KUND3 sy-vline 
WA_DIEQUZ_STR-LIZNR sy-vline 
WA_DIEQUZ_STR-RBNR sy-vline 
WA_DIEQUZ_STR-EZDAT sy-vline 
WA_DIEQUZ_STR-EZBER sy-vline 
WA_DIEQUZ_STR-RBNR_I sy-vline 
WA_DIEQUZ_STR-MANDT sy-vline 
WA_DIEQUZ_STR-ILOAN sy-vline 
WA_DIEQUZ_STR-TPLNR sy-vline 
WA_DIEQUZ_STR-ABCKZ sy-vline 
WA_DIEQUZ_STR-ABCKZI sy-vline 
WA_DIEQUZ_STR-EQFNR sy-vline 
WA_DIEQUZ_STR-EQFNRI sy-vline 
WA_DIEQUZ_STR-SWERK sy-vline 
WA_DIEQUZ_STR-SWERKI sy-vline 
WA_DIEQUZ_STR-STORT sy-vline 
WA_DIEQUZ_STR-STORTI sy-vline 
WA_DIEQUZ_STR-MSGRP sy-vline 
WA_DIEQUZ_STR-MSGRPI sy-vline 
WA_DIEQUZ_STR-BEBER sy-vline 
WA_DIEQUZ_STR-BEBERI sy-vline 
WA_DIEQUZ_STR-CR_OBJTY sy-vline 
WA_DIEQUZ_STR-PPSID sy-vline 
WA_DIEQUZ_STR-PPSIDI sy-vline 
WA_DIEQUZ_STR-GSBER sy-vline 
WA_DIEQUZ_STR-GSBERI sy-vline 
WA_DIEQUZ_STR-KOKRS sy-vline 
WA_DIEQUZ_STR-KOKRSI sy-vline 
WA_DIEQUZ_STR-KOSTL sy-vline 
WA_DIEQUZ_STR-KOSTLI sy-vline 
WA_DIEQUZ_STR-PROID sy-vline 
WA_DIEQUZ_STR-PROIDI sy-vline 
WA_DIEQUZ_STR-BUKRS sy-vline 
WA_DIEQUZ_STR-BUKRSI sy-vline 
WA_DIEQUZ_STR-ANLNR sy-vline 
WA_DIEQUZ_STR-ANLNRI sy-vline 
WA_DIEQUZ_STR-ANLUN sy-vline 
WA_DIEQUZ_STR-ANLUNI sy-vline 
WA_DIEQUZ_STR-DAUFN sy-vline 
WA_DIEQUZ_STR-DAUFNI sy-vline 
WA_DIEQUZ_STR-AUFNR sy-vline 
WA_DIEQUZ_STR-AUFNRI sy-vline 
WA_DIEQUZ_STR-TPLNRI sy-vline 
WA_DIEQUZ_STR-VKORG sy-vline 
WA_DIEQUZ_STR-VKORGI sy-vline 
WA_DIEQUZ_STR-VTWEG sy-vline 
WA_DIEQUZ_STR-VTWEGI sy-vline 
WA_DIEQUZ_STR-SPART sy-vline 
WA_DIEQUZ_STR-SPARTI sy-vline 
WA_DIEQUZ_STR-ADRNR sy-vline 
WA_DIEQUZ_STR-ADRNRI sy-vline 
WA_DIEQUZ_STR-OWNER sy-vline 
WA_DIEQUZ_STR-VKBUR sy-vline 
WA_DIEQUZ_STR-VKGRP sy-vline 
WA_DIEQUZ_STR-ARBPL sy-vline 
WA_DIEQUZ_STR-GEWRKE sy-vline 
WA_DIEQUZ_STR-NAME_LIST sy-vline 
WA_DIEQUZ_STR-TEL_NUMBER sy-vline 
WA_DIEQUZ_STR-POST_CODE1 sy-vline 
WA_DIEQUZ_STR-CITY1 sy-vline 
WA_DIEQUZ_STR-CITY2 sy-vline 
WA_DIEQUZ_STR-COUNTRY sy-vline 
WA_DIEQUZ_STR-REGION sy-vline 
WA_DIEQUZ_STR-STREET sy-vline 
WA_DIEQUZ_STR-STRNO sy-vline 
WA_DIEQUZ_STR-J_3GEIGNER sy-vline 
WA_DIEQUZ_STR-J_3GVERWAL sy-vline 
WA_DIEQUZ_STR-J_3GPMAUFE sy-vline 
WA_DIEQUZ_STR-J_3GPMAUFV sy-vline 
WA_DIEQUZ_STR-J_3GPACHT sy-vline      INTO ld_text SEPARATED BY SPACE.

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