ABAP Select data from SAP table EWASCONTAINERASSGNGRP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWASCONTAINERASSGNGRP
*  INTO TABLE @DATA(IT_EWASCONTAINERASSGNGRP2).
*--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_EWASCONTAINERASSGNGRP INDEX 1 INTO DATA(WA_EWASCONTAINERASSGNGRP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWASCONTAINERASSGNGRP>-SERVICEADDRESS = 1.
<EWASCONTAINERASSGNGRP>-SERVLOC = 1.
<EWASCONTAINERASSGNGRP>-EQUNR = 1.
<EWASCONTAINERASSGNGRP>-LOGIKNR = 1.
<EWASCONTAINERASSGNGRP>-DEVGRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWASCONTAINERASSGNGRP-IBASE, sy-vline,
  WA_EWASCONTAINERASSGNGRP-BIS, sy-vline,
  WA_EWASCONTAINERASSGNGRP-AB, sy-vline,
  WA_EWASCONTAINERASSGNGRP-TIMBI, sy-vline,
  WA_EWASCONTAINERASSGNGRP-TIMAB, sy-vline,
  WA_EWASCONTAINERASSGNGRP-BEH_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWASCONTAINERASSGNGRP 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_EWASCONTAINERASSGNGRP 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_EWASCONTAINERASSGNGRP INTO WA_EWASCONTAINERASSGNGRP.


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

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

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

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

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

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

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

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_EWASCONTAINERASSGNGRP-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASCONTAINERASSGNGRP-GERAET.
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_EWASCONTAINERASSGNGRP_STR, 
SERVICEADDRESS TYPE STRING,
SERVLOC TYPE STRING,
EQUNR TYPE STRING,
LOGIKNR TYPE STRING,
DEVGRP TYPE STRING,
IBASE TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
TIMBI TYPE STRING,
TIMAB TYPE STRING,
BEH_TYPE TYPE STRING,
WASTE_TYPE TYPE STRING,
ASSIGNTYPE TYPE STRING,
TEMPLOC TYPE STRING,
TEMPREMOVAL TYPE STRING,
CONT_COUNT TYPE STRING,
GERAET TYPE STRING,
PARTNERS TYPE STRING,
SERVICEDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWASCONTAINERASSGNGRP_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_EWASCONTAINERASSGNGRP_STR-SERVICEADDRESS sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-SERVLOC sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-EQUNR sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-LOGIKNR sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-DEVGRP sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-IBASE sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-BIS sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-AB sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-TIMBI sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-TIMAB sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-BEH_TYPE sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-WASTE_TYPE sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-ASSIGNTYPE sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-TEMPLOC sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-TEMPREMOVAL sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-CONT_COUNT sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-GERAET sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-PARTNERS sy-vline 
WA_EWASCONTAINERASSGNGRP_STR-SERVICEDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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