ABAP Select data from SAP table QAMS_ISSUE_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAMS_ISSUE_EXTRACT
*  INTO TABLE @DATA(IT_QAMS_ISSUE_EXTRACT2).
*--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_QAMS_ISSUE_EXTRACT INDEX 1 INTO DATA(WA_QAMS_ISSUE_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAMS_ISSUE_EXTRACT>-ISSUE_COUNT = 1.
<QAMS_ISSUE_EXTRACT>-KEY_MAX = 1.
<QAMS_ISSUE_EXTRACT>-Q_COMSUM = 1.
<QAMS_ISSUE_EXTRACT>-Q_OCCSUM = 1.
<QAMS_ISSUE_EXTRACT>-Q_REFSUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAMS_ISSUE_EXTRACT-Q_COM_D_Q_REF, sy-vline,
  WA_QAMS_ISSUE_EXTRACT-Q_COM_D_Q_REF_CT, sy-vline,
  WA_QAMS_ISSUE_EXTRACT-T_302_S_T_301, sy-vline,
  WA_QAMS_ISSUE_EXTRACT-T_302_S_T_301_CT, sy-vline,
  WA_QAMS_ISSUE_EXTRACT-CUSTOMER_REF_ID, sy-vline,
  WA_QAMS_ISSUE_EXTRACT-MATERIAL_REF_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAMS_ISSUE_EXTRACT 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_QAMS_ISSUE_EXTRACT 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_QAMS_ISSUE_EXTRACT INTO WA_QAMS_ISSUE_EXTRACT.


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

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

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

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

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

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

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

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

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

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

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

*Conversion exit TSTLC, internal->external for field CHANGED_ON
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_QAMS_ISSUE_EXTRACT-CHANGED_ON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAMS_ISSUE_EXTRACT-CHANGED_ON.
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_QAMS_ISSUE_EXTRACT_STR, 
ISSUE_COUNT TYPE STRING,
KEY_MAX TYPE STRING,
Q_COMSUM TYPE STRING,
Q_OCCSUM TYPE STRING,
Q_REFSUM TYPE STRING,
Q_COM_D_Q_REF TYPE STRING,
Q_COM_D_Q_REF_CT TYPE STRING,
T_302_S_T_301 TYPE STRING,
T_302_S_T_301_CT TYPE STRING,
CUSTOMER_REF_ID TYPE STRING,
MATERIAL_REF_ID TYPE STRING,
VENDOR_REF_ID TYPE STRING,
CHA_REF_ID TYPE STRING,
DLI_REF_ID TYPE STRING,
DLV_REF_ID TYPE STRING,
EQ_REF_ID TYPE STRING,
FL_REF_ID TYPE STRING,
PLA_REF_ID TYPE STRING,
MAIN_REF_ID TYPE STRING,
PS_REF_ID TYPE STRING,
POB_REF_ID TYPE STRING,
BID_REF_ID TYPE STRING,
REFERENCE_ID TYPE STRING,
IDESC_CD TYPE STRING,
CDESC_CD TYPE STRING,
DDESC_CD TYPE STRING,
EDESC_CD TYPE STRING,
ISOLU_CD TYPE STRING,
LCYCLE_CD TYPE STRING,
CONSIST_CD TYPE STRING,
DEFERRAL_CD TYPE STRING,
ARCHIVING_CD TYPE STRING,
VALIDATION_CD TYPE STRING,
EFFECTIVENESS_CD TYPE STRING,
APPROVAL_CD TYPE STRING,
ISSUE_TYPE_CD TYPE STRING,
DIGSIGN_CD TYPE STRING,
ISSUE_ID TYPE STRING,
APPLICATION TYPE STRING,
ISSUE_TYPE TYPE STRING,
ISSUE_CATEGORY TYPE STRING,
AUTH_GROUP TYPE STRING,
CRITICALITY TYPE STRING,
PRIORITY TYPE STRING,
EMERGENCY TYPE STRING,
DURATION_CD TYPE STRING,
COUNTRY TYPE STRING,
DEF_QUANT_UNIT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_BY TYPE STRING,
RESPONSIBLE_ID TYPE STRING,
CHANGED_ON TYPE STRING,
I_ROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAMS_ISSUE_EXTRACT_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_QAMS_ISSUE_EXTRACT_STR-ISSUE_COUNT sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-KEY_MAX sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-Q_COMSUM sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-Q_OCCSUM sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-Q_REFSUM sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-Q_COM_D_Q_REF sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-Q_COM_D_Q_REF_CT sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-T_302_S_T_301 sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-T_302_S_T_301_CT sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CUSTOMER_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-MATERIAL_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-VENDOR_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CHA_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DLI_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DLV_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-EQ_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-FL_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-PLA_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-MAIN_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-PS_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-POB_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-BID_REF_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-REFERENCE_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-IDESC_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CDESC_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DDESC_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-EDESC_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ISOLU_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-LCYCLE_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CONSIST_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DEFERRAL_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ARCHIVING_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-VALIDATION_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-EFFECTIVENESS_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-APPROVAL_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ISSUE_TYPE_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DIGSIGN_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ISSUE_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-APPLICATION sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ISSUE_TYPE sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-ISSUE_CATEGORY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-AUTH_GROUP sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CRITICALITY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-PRIORITY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-EMERGENCY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DURATION_CD sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-COUNTRY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-DEF_QUANT_UNIT sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CREATED_BY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CHANGED_BY sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-RESPONSIBLE_ID sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-CHANGED_ON sy-vline 
WA_QAMS_ISSUE_EXTRACT_STR-I_ROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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