[ http://issues.apache.org/jira/browse/DERBY-1132?page=all ]
Saurabh Vyas reassigned DERBY-1132:
-----------------------------------
Assignee: Saurabh Vyas
> Truncation Error with Concat
> ----------------------------
>
> Key: DERBY-1132
> URL: http://issues.apache.org/jira/browse/DERBY-1132
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.1.1.0
> Environment: Solaris, Windwos, JDK 1.5
> Reporter: Mitesh Meswani
> Assigned To: Saurabh Vyas
> Attachments: repro.java
>
>
> Consider the table
> CREATE TABLE CUSTOMER_TABLE ( ID VARCHAR(255) PRIMARY KEY NOT NULL, NAMEZ
> VARCHAR(255) , COUNTRY VARCHAR(255) )
> Sql:
> PreparedStatement ps = conn.prepateStatement ("SELECT * FROM CUSTOMER_TABLE
> WHERE NAMEZ = VARCHAR ( CAST (? AS VARCHAR(32672) ) || CAST (? AS
> VARCHAR(32672) ) )" );
> ps.setString(1, "Alan E. ");
> ps.setString(2, "Frechette");
> ps.executeQuery()
> Error:
> "A truncation error was encountered trying to shrink VARCHAR 'Alan E.
> Frechette' to length 15."
> getErrorCode()-1
> getSQLState()22001
> Please note that
> -The query executes ok against DB2 database
> -The query executes ok if the total length of both the parameters bound is
> less than 15. That is as follows
> //Total length of parameters bound = len("Alan E. Fre") = 11
> ps.setString(1, "Alan E. ");
> ps.setString(2, "Fre");
> -The error occurs both with embedded and network mode of derby
> -Omitting the casts as follows also gives the same error
> query: SELECT * FROM CUSTOMER_TABLE WHERE NAMEZ = VARCHAR( 'Frechette' ||
> ? )
> error: SQLState: 22001 "A truncation error was encountered trying to
> shrink VARCHAR 'FrechetteAlan E. ' to length 15"
> -Using parameter markers for both the variables without cast like as follows
> results in error
> query: SELECT * FROM CUSTOMER_TABLE WHERE NAMEZ = ? || ?
> error: SQLState: 42X35 "It is not allowed for both operands of '||' to be
> ? parameters."
> -Using parameter markers for only one variables without cast like as follows
> results in error
> query: SELECT * FROM CUSTOMER_TABLE WHERE NAMEZ = 'Frechette' || ?
> error:SQLState: 42818 "Comparisons between 'VARCHAR' and 'LONG VARCHAR'
> are not supported."
> -It works to cast to VARCHAR(2000), but not VARCHAR(2001) or larger.
> Regardless of length, if it fails, the magic number is always 15.
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