Hi Lukas,
thank you very much for the quick and very informational response.
Actually this is just a sample. In the real application, this list of ids
is the result of multiple queries that select them iteratively. After all
ids have been identified, the corresponding objects are selected.
The limitation of 2000 parameters is really a limitation of jTDS, not of
SQL Server (see if-block in method SQLParser.parse from line 1234 to 1259).
Here is the respective code snippet:
//
// Impose a reasonable maximum limit on the number of parameters
// unless the connection is sending statements unprepared (i.e. by
// building a plain query) and this is not a procedure call.
//
if (params != null && params.size() > 255
&& connection.getPrepareSql() != TdsCore.UNPREPARED
&& procName != null) {
int limit = 255; // SQL 6.5 and Sybase < 12.50
if (connection.getServerType() == Driver.SYBASE) {
if (connection.getDatabaseMajorVersion() > 12 ||
connection.getDatabaseMajorVersion() == 12 &&
connection.getDatabaseMinorVersion() >= 50) {
limit = 2000; // Actually 2048 but allow some head room
}
} else {
if (connection.getDatabaseMajorVersion() == 7) {
limit = 1000; // Actually 1024
} else
if (connection.getDatabaseMajorVersion() > 7) {
limit = 2000; // Actually 2100
}
}
if (params.size() > limit) {
throw new SQLException(
Messages.get("error.parsesql.toomanyparams",
Integer.toString(limit)),
"22025");
}
}
HTH, Marcus
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