[Snowflake-ODBC]Can't get column info succesfully with SQLColumns API - odbc

Question

I hit a issue with snowflake-odbc driver to collect all the columns' metadata of table;
A> Download the odbc driver from
https://sfc-repo.snowflakecomputing.com/odbc/linux/2.21.6/snowflake_linux_x8664_odbc-2.21.6.tgz
B> Install and config the odbc driver with doc in snowflake site:
https://docs.snowflake.com/en/user-guide/odbc-linux.html
I install it with unixodbc_setup.sh automatically and only updates the SF_ACCOUNT info, configure database and Warehouse values in /etc/odbc.ini
c> Test the driver with isql which works fine
[root#sflake1 lib]# isql -v snowflake user password
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL> select * from test_vch
+-----------+-----+--------------------------------------------------+
| V10 | V100 | V255 |
+-----------+------------------+----------------+
| v10 | v100 | v255 |
| a | b | c |
| aa | bb | cc |
+-----------+---------------+
SQLRowCount returns 3
3 rows fetched
SQL> quit;
d> I try to get the columns with SQLCOLUMNS API;
Implement the tested C codes likes below:
RETCODE getColumns(SQLHSTMT hstmt, SQLCHAR* tablename)
{
SQLRETURN rc;
SQLCHAR szSchema[STR_LEN];
SQLCHAR szCatalog[STR_LEN];
SQLCHAR szColumnName[STR_LEN];
SQLCHAR szTableName[STR_LEN];
SQLCHAR szTypeName[STR_LEN];
SQLCHAR szRemarks[REM_LEN];
SQLCHAR szColumnDefault[STR_LEN];
SQLCHAR szIsNullable[STR_LEN];
SQLINTEGER ColumnSize;
SQLINTEGER BufferLength;
SQLINTEGER CharOctetLength;
SQLINTEGER OrdinalPosition;
SQLSMALLINT DataType;
SQLSMALLINT DecimalDigits;
SQLSMALLINT NumPrecRadix;
SQLSMALLINT Nullable;
SQLSMALLINT SQLDataType;
SQLSMALLINT DatetimeSubtypeCode;
SQLLEN cbCatalog;
SQLLEN cbSchema;
SQLLEN cbTableName;
SQLLEN cbColumnName;
SQLLEN cbDataType;
SQLLEN cbTypeName;
SQLLEN cbColumnSize;
SQLLEN cbBufferLength;
SQLLEN cbDecimalDigits;
SQLLEN cbNumPrecRadix;
SQLLEN cbNullable;
SQLLEN cbRemarks;
SQLLEN cbColumnDefault;
SQLLEN cbSQLDataType;
SQLLEN cbDatetimeSubtypeCode;
SQLLEN cbCharOctetLength;
SQLLEN cbOrdinalPosition;
SQLLEN cbIsNullable;
SQLLEN numRecs = 0;
SQLCHAR SqlState[6], SQLStmt[100], Msg[SQL_MAX_MESSAGE_LENGTH];
SQLINTEGER NativeError;
SQLSMALLINT i, MsgLen;
rc = SQLColumns(hstmt, NULL, 0, (SQLCHAR*)"PUBLIC", SQL_NTS, tablename, SQL_NTS, NULL, 0);
if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
SQLBindCol(hstmt, 1, SQL_C_CHAR, szCatalog, STR_LEN,&cbCatalog);
SQLBindCol(hstmt, 2, SQL_C_CHAR, szSchema, STR_LEN, &cbSchema);
SQLBindCol(hstmt, 3, SQL_C_CHAR, szTableName, STR_LEN,&cbTableName);
SQLBindCol(hstmt, 4, SQL_C_CHAR, szColumnName, STR_LEN, &cbColumnName);
SQLBindCol(hstmt, 5, SQL_C_SSHORT, &DataType, 0, &cbDataType);
SQLBindCol(hstmt, 6, SQL_C_CHAR, szTypeName, STR_LEN, &cbTypeName);
SQLBindCol(hstmt, 7, SQL_C_SLONG, &ColumnSize, 0, &cbColumnSize);
SQLBindCol(hstmt, 8, SQL_C_SLONG, &BufferLength, 0, &cbBufferLength);
SQLBindCol(hstmt, 9, SQL_C_SSHORT, &DecimalDigits, 0, &cbDecimalDigits);
SQLBindCol(hstmt, 10, SQL_C_SSHORT, &NumPrecRadix, 0, &cbNumPrecRadix);
SQLBindCol(hstmt, 11, SQL_C_SSHORT, &Nullable, 0, &cbNullable);
SQLBindCol(hstmt, 12, SQL_C_CHAR, szRemarks, REM_LEN, &cbRemarks);
SQLBindCol(hstmt, 13, SQL_C_CHAR, szColumnDefault, STR_LEN, &cbColumnDefault);
SQLBindCol(hstmt, 14, SQL_C_SSHORT, &SQLDataType, 0, &cbSQLDataType);
SQLBindCol(hstmt, 15, SQL_C_SSHORT, &DatetimeSubtypeCode, 0, &cbDatetimeSubtypeCode);
SQLBindCol(hstmt, 16, SQL_C_SLONG, &CharOctetLength, 0, &cbCharOctetLength);
SQLBindCol(hstmt, 17, SQL_C_SLONG, &OrdinalPosition, 0, &cbOrdinalPosition);
SQLBindCol(hstmt, 18, SQL_C_CHAR, szIsNullable, STR_LEN, &cbIsNullable);
}
while (SQL_SUCCESS == rc) {
rc = SQLFetch(hstmt);
if (rc == SQL_NO_DATA_FOUND){
printf("SQL_NO_DATA_FOUND:All result done...");
break;
}
else if(rc != SQL_SUCCESS){
SQLGetDiagField(SQL_HANDLE_STMT, hstmt, 0, SQL_DIAG_NUMBER, &numRecs, 0, 0);
// Get the status records.
i = 1;
while (i <= numRecs && (rc = SQLGetDiagRec(SQL_HANDLE_STMT, hstmt, i, SqlState, &NativeError,Msg, sizeof(Msg), &MsgLen)) != SQL_NO_DATA) {
printf("SqlState:%s\n", SqlState); <------ Will show errors here
printf("NativeError:%d\n", NativeError);
printf("Msg:%s\n", Msg);
i++;
}
break;
}
printf("szColumnName=%s,szTypeName=%s,DataType=%d,ColumnSize=precision=%d",szColumnName,szTypeName,DataType,ColumnSize);
}
SQLFreeStmt(hstmt, SQL_UNBIND);
SQLFreeStmt(hstmt, SQL_CLOSE);
return rc;
}
The error message shows:
SqlState:S1000
NativeError:6
Msg:[Snowflake][Snowflake] (6)
Assertion failure: USER_DEFINED_TYPE_type_unsupported
The odbc.ini, odbcinst.ini and simba.snowflake.ini are attached below:
[root#sflake1 log]# more /etc/odbc.ini
[snowflake]
Description=SnowflakeDB
Driver=SnowflakeDSIIDriver
Locale=en-US
SERVER=cy72957.us-east-2.aws.snowflakecomputing.com
PORT=443
SSL=on
ACCOUNT=cy72957.us-east-2.aws
database=testdbu
Warehouse=COMPUTE_WH
[root#sflake1 log]# more /etc/odbcinst.ini
# Example driver definitions
# Driver from the postgresql-odbc package
# Setup from the unixODBC package
[PostgreSQL]
Description = ODBC for PostgreSQL
Driver = /usr/lib/psqlodbcw.so
Setup = /usr/lib/libodbcpsqlS.so
Driver64 = /usr/lib64/psqlodbcw.so
Setup64 = /usr/lib64/libodbcpsqlS.so
FileUsage = 1
# Driver from the mysql-connector-odbc package
# Setup from the unixODBC package
[MySQL]
Description = ODBC for MySQL
Driver = /usr/lib/libmyodbc5.so
Setup = /usr/lib/libodbcmyS.so
Driver64 = /usr/lib64/libmyodbc5.so
Setup64 = /usr/lib64/libodbcmyS.so
FileUsage = 1
[SnowflakeDSIIDriver]
APILevel=1
ConnectFunctions=YYY
Description=Snowflake DSII
Driver=/root/snowflake/snowflake_odbc/lib/libSnowflake.so
DriverODBCVer=03.52
SQLLevel=1
[root#sflake1 lib]# more simba.snowflake.ini
# To use this INI file, replace [INSTALLDIR] with the
# directory the tarball was extracted to.
[Driver]
ANSIENCODING=UTF-8
## Note that this default DriverManagerEncoding of UTF-32 is for iODBC. unixODBC uses UTF-16 by default.
## If unixODBC was compiled with -DSQL_WCHART_CONVERT, then UTF-32 is the correct value.
## Execute 'odbc_config --cflags' to determine if you need UTF-32 or UTF-16 on unixODBC
DriverManagerEncoding=UTF-16
DriverLocale=en-US
ErrorMessagesPath=/root/snowflake/snowflake_odbc/ErrorMessages/
LogLevel=0
LogNamespace=
LogPath=/root/snowflake/snowflake_odbc/log
CURLVerboseMode=false
CABundleFile=/path/to/cacert.pem
## - Uncomment the ODBCInstLib corresponding to the Driver Manager being used.
## - Note that the path to your ODBC Driver Manager must be specified in LD_LIBRARY_PATH (LIBPATH for AIX, DYLD_LIBRARY_PATH for Darwin).
## - Note that AIX has a different format for specifying its shared libraries.
# Generic ODBCInstLib
# iODBC
#ODBCInstLib=libiodbcinst.so.2
# SimbaDM / unixODBC
#ODBCInstLib=libodbcinst.so
# Darwin specific ODBCInstLib
# iODBC
#ODBCInstLib=libiodbcinst.dylib
# AIX specific ODBCInstLib
# iODBC
#ODBCInstLib=libiodbcinst.a(libiodbcinst.so.2)
# SimbaDM
#ODBCInstLib=libodbcinst.a(odbcinst.so)
# unixODBC
ODBCInstLib=/usr/lib64/libodbcinst.so
CABundleFile=/root/snowflake/snowflake_odbc/lib/cacert.pem