ABAP Select data from SAP table QNQMI00EA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP QNQMI00EA 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 QNQMI00EA. 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 QNQMI00EA 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_QNQMI00EA TYPE STANDARD TABLE OF QNQMI00EA,
      WA_QNQMI00EA TYPE QNQMI00EA,
      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: <QNQMI00EA> TYPE QNQMI00EA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QNQMI00EA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QNQMI00EA
  INTO TABLE IT_QNQMI00EA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QNQMI00EA
*  INTO TABLE @DATA(IT_QNQMI00EA2).
*--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_QNQMI00EA INDEX 1 INTO DATA(WA_QNQMI00EA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QNQMI00EA ASSIGNING <QNQMI00EA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QNQMI00EA>-MATERIAL = 1.
<QNQMI00EA>-MAT_CHARGE = 1.
<QNQMI00EA>-MAT_KUNDE = 1.
<QNQMI00EA>-MAT_CHA_KUNDE = 1.
<QNQMI00EA>-MAT_LIEFER = 1.

ENDLOOP.

LOOP AT IT_QNQMI00EA INTO WA_QNQMI00EA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QNQMI00EA-MAT_CHA_LIEFER, sy-vline,
  WA_QNQMI00EA-LIEFERANT, sy-vline,
  WA_QNQMI00EA-KUNDE, sy-vline,
  WA_QNQMI00EA-FEARTGRP, sy-vline,
  WA_QNQMI00EA-FEART, sy-vline,
  WA_QNQMI00EA-FEORTGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QNQMI00EA 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_QNQMI00EA 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_QNQMI00EA INTO WA_QNQMI00EA.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QNQMI00EA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMI00EA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QNQMI00EA-KUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMI00EA-KUNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QNQMI00EA-LIFNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMI00EA-LIFNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QNQMI00EA-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMI00EA-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QNQMI00EA-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QNQMI00EA-PRUEFLOS.
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_QNQMI00EA_STR, 
MATERIAL TYPE STRING,
MAT_CHARGE TYPE STRING,
MAT_KUNDE TYPE STRING,
MAT_CHA_KUNDE TYPE STRING,
MAT_LIEFER TYPE STRING,
MAT_CHA_LIEFER TYPE STRING,
LIEFERANT TYPE STRING,
KUNDE TYPE STRING,
FEARTGRP TYPE STRING,
FEART TYPE STRING,
FEORTGRP TYPE STRING,
FEORT TYPE STRING,
MATNR TYPE STRING,
CHARGE TYPE STRING,
KUNUM TYPE STRING,
LIFNUM TYPE STRING,
QMNUM TYPE STRING,
PRUEFLOS TYPE STRING,
MODUS TYPE STRING,
REFRESH TYPE STRING,
ICONE1 TYPE STRING,
ICONE2 TYPE STRING,
VERSION TYPE STRING,
ANZ_TAGE TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QNQMI00EA_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_QNQMI00EA_STR-MATERIAL sy-vline 
WA_QNQMI00EA_STR-MAT_CHARGE sy-vline 
WA_QNQMI00EA_STR-MAT_KUNDE sy-vline 
WA_QNQMI00EA_STR-MAT_CHA_KUNDE sy-vline 
WA_QNQMI00EA_STR-MAT_LIEFER sy-vline 
WA_QNQMI00EA_STR-MAT_CHA_LIEFER sy-vline 
WA_QNQMI00EA_STR-LIEFERANT sy-vline 
WA_QNQMI00EA_STR-KUNDE sy-vline 
WA_QNQMI00EA_STR-FEARTGRP sy-vline 
WA_QNQMI00EA_STR-FEART sy-vline 
WA_QNQMI00EA_STR-FEORTGRP sy-vline 
WA_QNQMI00EA_STR-FEORT sy-vline 
WA_QNQMI00EA_STR-MATNR sy-vline 
WA_QNQMI00EA_STR-CHARGE sy-vline 
WA_QNQMI00EA_STR-KUNUM sy-vline 
WA_QNQMI00EA_STR-LIFNUM sy-vline 
WA_QNQMI00EA_STR-QMNUM sy-vline 
WA_QNQMI00EA_STR-PRUEFLOS sy-vline 
WA_QNQMI00EA_STR-MODUS sy-vline 
WA_QNQMI00EA_STR-REFRESH sy-vline 
WA_QNQMI00EA_STR-ICONE1 sy-vline 
WA_QNQMI00EA_STR-ICONE2 sy-vline 
WA_QNQMI00EA_STR-VERSION sy-vline 
WA_QNQMI00EA_STR-ANZ_TAGE sy-vline 
WA_QNQMI00EA_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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