ABAP Select data from SAP table CEINSTANLYSQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CEINSTANLYSQ
*  INTO TABLE @DATA(IT_CEINSTANLYSQ2).
*--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_CEINSTANLYSQ INDEX 1 INTO DATA(WA_CEINSTANLYSQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CEINSTANLYSQ>-MANDT = 1.
<CEINSTANLYSQ>-UTILITIESINSTALLATION = 1.
<CEINSTANLYSQ>-UTILSINSTALLATIONISSUSPENDED = 1.
<CEINSTANLYSQ>-DIVISION = 1.
<CEINSTANLYSQ>-DIVISIONNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CEINSTANLYSQ-UTILITIESBILLINGCLASS, sy-vline,
  WA_CEINSTANLYSQ-UTILITIESBILLINGCLASSNAME, sy-vline,
  WA_CEINSTANLYSQ-UTILITIESRATECATEGORY, sy-vline,
  WA_CEINSTANLYSQ-UTILITIESRATECATEGORYNAME, sy-vline,
  WA_CEINSTANLYSQ-UTILITIESPREMISE, sy-vline,
  WA_CEINSTANLYSQ-UTILITIESCONTRACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CEINSTANLYSQ 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_CEINSTANLYSQ 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_CEINSTANLYSQ INTO WA_CEINSTANLYSQ.


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

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

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

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

*Conversion exit ALPHA, internal->external for field UTILSINSTGUAROFSUPREASON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CEINSTANLYSQ-UTILSINSTGUAROFSUPREASON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CEINSTANLYSQ-UTILSINSTGUAROFSUPREASON.
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_CEINSTANLYSQ_STR, 
MANDT TYPE STRING,
UTILITIESINSTALLATION TYPE STRING,
UTILSINSTALLATIONISSUSPENDED TYPE STRING,
DIVISION TYPE STRING,
DIVISIONNAME TYPE STRING,
UTILITIESBILLINGCLASS TYPE STRING,
UTILITIESBILLINGCLASSNAME TYPE STRING,
UTILITIESRATECATEGORY TYPE STRING,
UTILITIESRATECATEGORYNAME TYPE STRING,
UTILITIESPREMISE TYPE STRING,
UTILITIESCONTRACT TYPE STRING,
INDUSTRYSECTOR TYPE STRING,
REGION TYPE STRING,
COUNTRY TYPE STRING,
CITYNAME TYPE STRING,
STREETNAME TYPE STRING,
HOUSENUMBER TYPE STRING,
HOUSENUMBERSUPPLEMENTTEXT TYPE STRING,
METERREADINGBLOCKINGREASON TYPE STRING,
METERREADINGBLOCKINGREASONNAME TYPE STRING,
METERREADINGUNIT TYPE STRING,
METERREADINGUNITNAME TYPE STRING,
UTILITIESINSTALLATIONTYPE TYPE STRING,
UTILITIESINSTALLATIONTYPENAME TYPE STRING,
UTILITIESSRVCPROVIDERROLE TYPE STRING,
UTILITIESSRVCPROVIDERROLENAME TYPE STRING,
UTILSINSTDEREGULATIONSTS TYPE STRING,
UTILSINSTDEREGULATIONSTSNAME TYPE STRING,
UTILSINSTDVCEALLCTNISNOTALLWD TYPE STRING,
UTILSINSTGUAROFSUPREASON TYPE STRING,
UTILSINSTGUAROFSUPREASONNAME TYPE STRING,
NUMBEROFUTILITIESINSTALLATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CEINSTANLYSQ_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_CEINSTANLYSQ_STR-MANDT sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESINSTALLATION sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTALLATIONISSUSPENDED sy-vline 
WA_CEINSTANLYSQ_STR-DIVISION sy-vline 
WA_CEINSTANLYSQ_STR-DIVISIONNAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESBILLINGCLASS sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESBILLINGCLASSNAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESRATECATEGORY sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESRATECATEGORYNAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESPREMISE sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESCONTRACT sy-vline 
WA_CEINSTANLYSQ_STR-INDUSTRYSECTOR sy-vline 
WA_CEINSTANLYSQ_STR-REGION sy-vline 
WA_CEINSTANLYSQ_STR-COUNTRY sy-vline 
WA_CEINSTANLYSQ_STR-CITYNAME sy-vline 
WA_CEINSTANLYSQ_STR-STREETNAME sy-vline 
WA_CEINSTANLYSQ_STR-HOUSENUMBER sy-vline 
WA_CEINSTANLYSQ_STR-HOUSENUMBERSUPPLEMENTTEXT sy-vline 
WA_CEINSTANLYSQ_STR-METERREADINGBLOCKINGREASON sy-vline 
WA_CEINSTANLYSQ_STR-METERREADINGBLOCKINGREASONNAME sy-vline 
WA_CEINSTANLYSQ_STR-METERREADINGUNIT sy-vline 
WA_CEINSTANLYSQ_STR-METERREADINGUNITNAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESINSTALLATIONTYPE sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESINSTALLATIONTYPENAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESSRVCPROVIDERROLE sy-vline 
WA_CEINSTANLYSQ_STR-UTILITIESSRVCPROVIDERROLENAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTDEREGULATIONSTS sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTDEREGULATIONSTSNAME sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTDVCEALLCTNISNOTALLWD sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTGUAROFSUPREASON sy-vline 
WA_CEINSTANLYSQ_STR-UTILSINSTGUAROFSUPREASONNAME sy-vline 
WA_CEINSTANLYSQ_STR-NUMBEROFUTILITIESINSTALLATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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