{"record":{"id":"c55ba89052cefc20","repo":"apache/cassandra","slug":"invalid-amount-of-bind-variables","errorCode":null,"errorMessage":"Invalid amount of bind variables","messagePattern":"Invalid amount of bind variables","errorType":"validation","errorClass":"InvalidRequestException","httpStatus":null,"severity":"error","filePath":"src/java/org/apache/cassandra/cql3/QueryProcessor.java","lineNumber":402,"sourceCode":"    {\n        return getStatement(queryString, queryState.getClientState().cloneWithKeyspaceIfSet(options.getKeyspace()));\n    }\n\n    public ResultMessage process(CQLStatement statement,\n                                 QueryState state,\n                                 QueryOptions options,\n                                 Map<String, ByteBuffer> customPayload,\n                                 Dispatcher.RequestTime requestTime) throws RequestExecutionException, RequestValidationException\n    {\n        return process(statement, state, options, requestTime);\n    }\n\n    public ResultMessage process(CQLStatement prepared, QueryState queryState, QueryOptions options, Dispatcher.RequestTime requestTime)\n    throws RequestExecutionException, RequestValidationException\n    {\n        options.prepare(prepared.getBindVariables());\n        if (prepared.getBindVariables().size() != options.getValues().size())\n            throw new InvalidRequestException(\"Invalid amount of bind variables\");\n\n        if (!queryState.getClientState().isInternal)\n            metrics.regularStatementsExecuted.inc();\n\n        return processStatement(prepared, queryState, options, requestTime);\n    }\n\n    public static CQLStatement parseStatement(String queryStr, ClientState clientState) throws RequestValidationException\n    {\n        return getStatement(queryStr, clientState);\n    }\n\n    public static UntypedResultSet process(String query, ConsistencyLevel cl) throws RequestExecutionException\n    {\n        return process(query, cl, Collections.<ByteBuffer>emptyList());\n    }\n\n    public static UntypedResultSet process(String query, ConsistencyLevel cl, List<ByteBuffer> values) throws RequestExecutionException","sourceCodeStart":384,"sourceCodeEnd":420,"githubUrl":"https://github.com/apache/cassandra/blob/88fd0f6a0eaed8943f05ac9e8f947882b8ddc8f1/src/java/org/apache/cassandra/cql3/QueryProcessor.java#L384-L420","documentation":"QueryProcessor.process() validates that the number of values supplied in QueryOptions matches the number of bind variables in the prepared statement. A mismatch means the client supplied too many or too few bound values, so execution is rejected before processStatement.","triggerScenarios":"Executing a prepared statement with positional values whose count != prepared.getBindVariables().size(), e.g. missing a bound value after adding a column to the CQL, or passing extra values.","commonSituations":"Schema change added/removed a bind marker while cached prepared-statement binding code was not updated; loops building value lists that skip nulls; driver misuse mixing named and positional binding.","solutions":["Supply exactly one value per bind marker in the prepared statement.","Re-prepare the statement if the schema changed and the bind variable count differs.","Fix code that constructs the values list (e.g. skips null entries) to include all markers."],"exampleFix":"// before\nstmt.bind(id); // statement has 2 markers\n// after\nstmt.bind(id, name);","handlingStrategy":"validation","validationCode":"if (values.size() != prepared.getBindVariables().size()) throw new IllegalStateException(\"expected \" + prepared.getBindVariables().size() + \" values, got \" + values.size());","typeGuard":null,"tryCatchPattern":"try { session.execute(ps.bind(values.toArray())); } catch (InvalidRequestException e) { if (e.getMessage().equals(\"Invalid amount of bind variables\")) { /* re-prepare and rebind */ } }","preventionTips":["Re-prepare statements after schema migrations","Build value lists from bind-marker metadata, not hardcoded counts","Never filter nulls out of positional value lists"],"tags":["cql","bind-parameters","prepared-statement"],"backgroundTag":"missing-required-argument","analyzedSha":"88fd0f6a0eaed8943f05ac9e8f947882b8ddc8f1","analyzedAt":"2026-09-10T07:29:22.284Z","contentChangedAt":"2026-09-10T07:29:22.284Z","schemaVersion":2},"datasetVersion":"2026-09-14T16:17:12.679Z"}