Last 2 or 1 character got trucated when insert 200K or 199999 long string to a SQL table's varchar column

[Jieping Zhang]

Seems there is a bug in ODBC driver. When insert a 200K long string to the varchar column, the last 2 characters will be truncated and replaced by 2 blanks. Insert of 199999 long string to the varchar column has similar issue, the last character will be truncated and replaced by 1 blank. Insert of any string <=199998 works fine.

To reproduce:
create a table which has varchar column, eg. create table T1(c1 varchar(200000), c2 char(200000));

insert a 200K long string to column c1
select * from c1 --> you will see the last 2 characters are truncated and replaced with 2 blank character

insert a 199999 long string to column c1
select * from c1 --> you will see the last character is truncated and replaced with 1 blank character

[Arvind Narain (arvind-narain)]

Fix submitted via https://review.trafodion.org/#/c/1631/

change in
 https://review.trafodion.org/#/c/1631/2/sql/cli/CliExpExchange.cpp

Fix was tested via bug https://bugs.launchpad.net/trafodion/+bug/1451618

Closing as fix released.