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ODBC Driver Assertion `stmt->Dbc->FirstStmt' Failed  #7306

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@fuboat

Description

Describe the bug
ODBC Driver assertion failed

To Reproduce
command to start odbc client:

apt install unixodbc
# config MonetDB in $HOME/.odbc.ini
...
isql monetdb -v

Input the following statements:

SELECT avg(42) over (order by row_number() over ());
SELECT 1;

It will end up with an assertion failure:

+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+
SQL> SELECT avg(42) over (order by row_number() over ())
[37000][MonetDB][ODBC Driver 11.44.0]unexpected end of file
[ISQL]ERROR: Could not SQLPrepare
SQL> SELECT 1
isql: /root/MonetDB/clients/odbc/driver/ODBCStmt.c:194: destroyODBCStmt: Assertion `stmt->Dbc->FirstStmt' failed.
fish: “isql monetdb -v” terminated by signal SIGABRT (Abort)

Expected behavior

+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+
SQL> SELECT avg(42) over (order by row_number() over ())
[37000][MonetDB][ODBC Driver 11.44.0]unexpected end of file
[ISQL]ERROR: Could not SQLPrepare
SQL> SELECT 1
+-----+
| %2  |
+-----+
| 1   |
+-----+
SQLRowCount returns 1
1 rows fetched

Screenshots
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Software versions

  • ODBC Driver version number: MonetDB ODBC Driver 11.44.0
  • OS and version: Ubuntu 20.04, UnixODBC 2.3.6
    • MonetDB Server version number (I think that the server version doesn't matter): MonetDB Database Server v11.43.13 (hg id: ce33b6b12cd6)

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