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Accessing System tables using ODBC and binding C types
I would like to access tables in Vertica such as the disk_storage table using the ODBC interface. The user level DB's are detailed in the v_catalog.columns however I cannot seem to see any detailed about the v_catalog tables, possibly due to their being virtual.
So the questions is if I want to use ODBC and do a bind of C data types to the statement results how do I determine what the column data types will be in the disk_storage table for example ?
ret = SQLExecDirect( hdlStmt, (SQLCHAR*)statement.c_str(), SQL_NTS );
ret = SQLBindCol(hdlStmt, 1, SQL_C_???????, ....;
What is the secret way to determine what SQL_C_???????,would be for the system tables?
Thanks,
Karl
So the questions is if I want to use ODBC and do a bind of C data types to the statement results how do I determine what the column data types will be in the disk_storage table for example ?
std::string statement("SELECT * FROM disk_storage WHERE storage_usage ILIKE '%data%' ORDER BY rank;");
...ret = SQLExecDirect( hdlStmt, (SQLCHAR*)statement.c_str(), SQL_NTS );
ret = SQLBindCol(hdlStmt, 1, SQL_C_???????, ....;
What is the secret way to determine what SQL_C_???????,would be for the system tables?
Thanks,
Karl
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