Continuous SQLMoreResults without fetching any data

[QIAO]

I am writing a ODBC driver for Athena. When I try to fetch data by Power BI through ODBC driver, I get lots of continuous SQLMoreResults without fetching any data. I attached some loggers, and don't understand why POWER BI call SQLMoreResults  so frequently without fetching any data??

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 0 (SQL_SUCCESS)
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 ENTER SQLMoreResults
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 0 (SQL_SUCCESS)
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 ENTER SQLMoreResults
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 0 (SQL_SUCCESS)
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 ENTER SQLMoreResults
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 0 (SQL_SUCCESS)
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 ENTER SQLMoreResults
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 0 (SQL_SUCCESS)
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 ENTER SQLMoreResults
HSTMT 0x00000270A09B3670

Microsoft.Mashu 41a0-2fd4 EXIT SQLMoreResults with return code 100 (SQL_NO_DATA_FOUND)
HSTMT 0x00000270A09B3670

[v-chuncz-msft]

@QIAO,

Make sure the SQL statement only returns one result set.