An array and scalar values together in an sql statement

Question

Hi
We have a table called SERVICE and following are the 3 columns from SERVICE table,
SERVICESTATUSID - NUMBER(10)
ACCOUNTID - NUMBER(10)
SERVICENUMBER - VARCHAR(41)
My aim is to be able to update the status of a bunch of entries in this table from Pro C code with new ServiceStatusID where accountId matches the accountId supplied and SERVICENUMBER exists in the list of services supplied.
Now I am trying to use host arrays here for SERVICENUMBERs and then my Update statement looks like this,
UPDATE SERVICE SET SERVICESTATUSID = :x WHERE ACCOUNTID = :y AND SERVICENUMBER = :z
And then I am trying to execute it with the help of bind variables in Pro C as follows,
EXEC SQL AT DB_NAME CONTEXT USE :myContext;
EXEC SQL AT DB_NAME DECLARE sqlStatement STATEMENT;
EXEC SQL AT DB_NAME PREPARE sqlStatement FROM :str;
EXEC SQL AT DB_NAME EXECUTE sqlStatement USING :statusId, :accountId, :serviceNumbersList;
where statusId is integer,

Answer 1

user12169137 wrote:
Now I am trying to use host arrays here for SERVICENUMBERs and then my Update statement looks like this,
UPDATE SERVICE SET SERVICESTATUSID = :x WHERE ACCOUNTID = :y AND SERVICENUMBER = :z
And then I am trying to execute it with the help of bind variables in Pro C as follows,
EXEC SQL AT DB_NAME CONTEXT USE :myContext;
EXEC SQL AT DB_NAME DECLARE sqlStatement STATEMENT;
EXEC SQL AT DB_NAME PREPARE sqlStatement FROM :str;
EXEC SQL AT DB_NAME EXECUTE sqlStatement USING :statusId, :accountId, :serviceNumbersList;
where statusId is integer,I am not sure what you are asking. I think you want statusId to be a scalar integer but use a series of values for the service numbers.
This can be done, but will take a little effort. It might be most easily done in a PL/SQL block where you can control the datatypes too. What you will have to do is create a database object with the datatype (integer, number, whatever), then another object as a table of that object. It should then be possible to convert your collection into a database nested table with the CAST() function. Don't expect really good performance from this.
Search OTN for cast conversions for more information on this method.
Another alternative if you have < 1000 items is to use dynamic SQL by generating an IN list from your collection contents. Again, performance will probably not be great.
Good luck.