ODBC SQLFetch fails when column size is bigger than 64K

[Jieping Zhang]

SQLFetch returned error "[TRAF][Trafodion ODBC Driver] Cardinality violation; parameter value list does not match column list.Inconsistent memory offsets, data length, and rows fetched" when column size is bigger than 64K

To reproduce the problem, do the fetch below in ODBCTest:
SQLExecDirect:
    In: Statementhandle = 0x000000000020AF40, StatementText = "select left (query_text,8192) from "_REPOS_".metri...", Statementlength = 64
    Return: SQL_SUCCESS=0
SQLFetch:
    In: StatementHandle = 0x000000000020AF40
    Return: SQL_ERROR=-1
    stmt: szSqlState = "21002", *pfNativeError = 0, *pcbErrorMsg = 159, *ColumnNumber = -1, *RowNumber = -2
          MessageText = "[TRAF][Trafodion ODBC Driver] Cardinality violation; parameter value list does not match column list.Inconsistent memory offsets, data length, and rows fetched"
    stmt: szSqlState = "S1000", *pfNativeError = 0, *pcbErrorMsg = 49, *ColumnNumber = -1, *RowNumber = -2
          MessageText = "[TRAF][Trafodion ODBC Driver] Data type mismatch."

Data type of query_text: VARCHAR(50000 CHARS) CHARACTER SET UTF8

[Daniel Lu (ping-lu)]

this fix corresponding to server side fix "Fix for bug 1438775". without it, client will report "Cardinality violation; parameter value list does not match column list.Inconsistent memory offsets, data length, and rows fetched".

[Jieping Zhang (jieping-zhang)]

QA test passed.

Test scenario:
Insert 200K long string into a table's varchar(200000) column, fetch the string from the varchar column, string was fetched successfully thru ODBC driver(Linux and Windows drivers).