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Regression when running DDL (CREATE SCHEMA or CREATE VIEW) in PreparedStatement

See original GitHub issue

The following code:

try (Connection c = new com.microsoft.sqlserver.jdbc.SQLServerDriver().connect(url, properties)) {
    try (PreparedStatement s1 = c.prepareStatement("create schema x");
         PreparedStatement s2 = c.prepareStatement("drop schema x")) {
        System.out.println(s1.execute());
        System.out.println(s2.execute());
    }
}

… works with:

<dependency>
    <groupId>com.microsoft.sqlserver</groupId>
    <artifactId>mssql-jdbc</artifactId>
    <version>6.1.0.jre8</version>
</dependency>

… but it no longer works with:

    <version>6.2.0.jre8</version>

The error I’m getting is this:

com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near the keyword 'schema'.
	at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:258)
	at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(SQLServerStatement.java:1547)
	at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.doExecutePreparedStatement(SQLServerPreparedStatement.java:528)
	at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement$PrepStmtExecCmd.doExecute(SQLServerPreparedStatement.java:461)
	at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7151)
	at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2689)
	at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(SQLServerStatement.java:224)
	at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(SQLServerStatement.java:204)
	at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.execute(SQLServerPreparedStatement.java:445)
	at SQLServer.main(SQLServer.java:69)

A workaround is to resort to static statements. The same is true for CREATE VIEW statements:

// Works on both versions
try (Statement s1 = c.createStatement();
     Statement s2 = c.createStatement()) {
    System.out.println(s1.execute("create view x as select 1 a"));
    System.out.println(s2.execute("drop view x"));
}

// Works only on version 6.1.0
try (PreparedStatement s1 = c.prepareStatement("create view x as select 1 a");
     PreparedStatement s2 = c.prepareStatement("drop view x")) {
    System.out.println(s1.execute());
    System.out.println(s2.execute());
}

I think that’s quite a significant regression. Other DDL statements might be affected as well.