ABAP Select data from SAP table QISR_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QISR_HEADER
*  INTO TABLE @DATA(IT_QISR_HEADER2).
*--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_QISR_HEADER INDEX 1 INTO DATA(WA_QISR_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QISR_HEADER>-NOTIF_NO = 1.
<QISR_HEADER>-NOTIF_TYPE = 1.
<QISR_HEADER>-SCENARIO = 1.
<QISR_HEADER>-SCENARIO_DESCR = 1.
<QISR_HEADER>-CREATION_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QISR_HEADER-CREATION_TIME, sy-vline,
  WA_QISR_HEADER-CALC_COSTS, sy-vline,
  WA_QISR_HEADER-CALC_COSTS_CURR, sy-vline,
  WA_QISR_HEADER-LANGUAGE, sy-vline,
  WA_QISR_HEADER-PRICE_LIST, sy-vline,
  WA_QISR_HEADER-START_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QISR_HEADER 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_QISR_HEADER 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_QISR_HEADER INTO WA_QISR_HEADER.


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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_QISR_HEADER-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QISR_HEADER-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSN, internal->external for field WBS_ELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_QISR_HEADER-WBS_ELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QISR_HEADER-WBS_ELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SALES_ORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QISR_HEADER-SALES_ORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QISR_HEADER-SALES_ORD.
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_QISR_HEADER_STR, 
NOTIF_NO TYPE STRING,
NOTIF_TYPE TYPE STRING,
SCENARIO TYPE STRING,
SCENARIO_DESCR TYPE STRING,
CREATION_DATE TYPE STRING,
CREATION_TIME TYPE STRING,
CALC_COSTS TYPE STRING,
CALC_COSTS_CURR TYPE STRING,
LANGUAGE TYPE STRING,
PRICE_LIST TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
REQ_DATE TYPE STRING,
REQ_TIME TYPE STRING,
PRIORITY TYPE STRING,
EXT_REF_NUMBER TYPE STRING,
SHORT_TEXT TYPE STRING,
ESTIM_COSTS TYPE STRING,
ESTIM_COSTS_CURR TYPE STRING,
SERVICE_TYPE TYPE STRING,
CO_AREA TYPE STRING,
COSTCENTER TYPE STRING,
ORDERID TYPE STRING,
WBS_ELEMENT TYPE STRING,
SALES_ORD TYPE STRING,
S_ORD_ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QISR_HEADER_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_QISR_HEADER_STR-NOTIF_NO sy-vline 
WA_QISR_HEADER_STR-NOTIF_TYPE sy-vline 
WA_QISR_HEADER_STR-SCENARIO sy-vline 
WA_QISR_HEADER_STR-SCENARIO_DESCR sy-vline 
WA_QISR_HEADER_STR-CREATION_DATE sy-vline 
WA_QISR_HEADER_STR-CREATION_TIME sy-vline 
WA_QISR_HEADER_STR-CALC_COSTS sy-vline 
WA_QISR_HEADER_STR-CALC_COSTS_CURR sy-vline 
WA_QISR_HEADER_STR-LANGUAGE sy-vline 
WA_QISR_HEADER_STR-PRICE_LIST sy-vline 
WA_QISR_HEADER_STR-START_DATE sy-vline 
WA_QISR_HEADER_STR-START_TIME sy-vline 
WA_QISR_HEADER_STR-REQ_DATE sy-vline 
WA_QISR_HEADER_STR-REQ_TIME sy-vline 
WA_QISR_HEADER_STR-PRIORITY sy-vline 
WA_QISR_HEADER_STR-EXT_REF_NUMBER sy-vline 
WA_QISR_HEADER_STR-SHORT_TEXT sy-vline 
WA_QISR_HEADER_STR-ESTIM_COSTS sy-vline 
WA_QISR_HEADER_STR-ESTIM_COSTS_CURR sy-vline 
WA_QISR_HEADER_STR-SERVICE_TYPE sy-vline 
WA_QISR_HEADER_STR-CO_AREA sy-vline 
WA_QISR_HEADER_STR-COSTCENTER sy-vline 
WA_QISR_HEADER_STR-ORDERID sy-vline 
WA_QISR_HEADER_STR-WBS_ELEMENT sy-vline 
WA_QISR_HEADER_STR-SALES_ORD sy-vline 
WA_QISR_HEADER_STR-S_ORD_ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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