fix

hibernate-reactive-core/src/main/java/org/hibernate/reactive/provider/service/AbstractReactiveInformationSchemaBasedExtractorImpl.java

@@ -183,7 +183,11 @@ protected <T> T processSchemaResultSet(
 		final List<Object> parameters = new ArrayList<>();
 		appendClauseAndParameterIfNotNullOrEmpty( " and catalog_name = ", catalog, sb, parameters );
 		appendClauseAndParameterIfNotNullOrEmpty( " and schema_name like ", schemaPattern, sb, parameters );
-		return getExtractionContext().getQueryResults( sb.toString(), parameters.toArray(), processor );
+		return getExtractionContext().getQueryResults(
+				sb.toString(),
+				parameters.toArray(),
+				processor
+		);
 	}
 
 	protected boolean appendClauseAndParameterIfNotNullOrEmpty(
@@ -195,12 +199,16 @@ protected boolean appendClauseAndParameterIfNotNullOrEmpty(
 		if ( parameter != null && ( ! String.class.isInstance( parameter ) || ! ( (String) parameter ).isEmpty() ) ) {
 			parameters.add( parameter );
 			sb.append( clause );
-			sb.append( "?");
+			sb.append( parameterMarker( parameters.size() ) );
 			return true;
 		}
 		return false;
 	}
 
+	protected String parameterMarker(int pos) {
+		return "?";
+	}
+
 	@Override
 	protected <T> T processTableResultSet(
 			String catalog,

hibernate-reactive-core/src/main/java/org/hibernate/reactive/provider/service/OracleSqlReactiveInformationExtractorImpl.java

@@ -61,10 +61,15 @@ protected <T> T processIndexInfoResultSet(
 		appendClauseAndParameterIfNotNullOrEmpty( " and ui.table_owner = ", schema, sb, parameters );
 		appendClauseAndParameterIfNotNullOrEmpty( " and ui.table_name = ", table, sb, parameters );
 
-
 		return getExtractionContext().getQueryResults( sb.toString(), parameters.toArray(), processor );
 	}
 
+	@Override
+	protected String parameterMarker(int pos) {
+		return ":" + pos;
+	}
+
+
 	@Override
 	protected <T> T processImportedKeysResultSet(
 			String catalog,

hibernate-reactive-core/src/main/java/org/hibernate/reactive/provider/service/PostgreSqlReactiveInformationExtractorImpl.java

@@ -100,6 +100,11 @@ protected <T> T processIndexInfoResultSet(
 		);
 	}
 
+	@Override
+	protected String parameterMarker(int pos) {
+		return "$" + pos;
+	}
+
 	@Override
 	protected <T> T processImportedKeysResultSet(
 			String catalog,
@@ -135,7 +140,6 @@ protected <T> T processImportedKeysResultSet(
 
 		// No need to order by catalog since it is always null.
 		sb.append( " order by pkn.nspname, pkc.relname, con.conname, pos.n" );
-
 		return getExtractionContext().getQueryResults( sb.toString(), parameterValues.toArray(), processor );
 	}
 

hibernate-reactive-core/src/main/java/org/hibernate/reactive/provider/service/SqlServerReactiveInformationExtractorImpl.java

@@ -93,6 +93,12 @@ protected <T> T processTableResultSet(
 		return getExtractionContext().getQueryResults( sb.toString(), parameterValues.toArray(), processor );
 	}
 
+
+	@Override
+	protected String parameterMarker(int pos) {
+		return "@P" + pos;
+	}
+
 	@Override
 	protected <T> T processColumnsResultSet(
 			String catalog,

hibernate-reactive-core/src/main/java/org/hibernate/reactive/query/sql/internal/ReactiveNativeNonSelectQueryPlan.java

@@ -20,6 +20,7 @@
 import org.hibernate.query.sql.spi.ParameterOccurrence;
 import org.hibernate.query.sqm.internal.SqmJdbcExecutionContextAdapter;
 import org.hibernate.reactive.engine.spi.ReactiveSharedSessionContractImplementor;
+import org.hibernate.reactive.pool.impl.Parameters;
 import org.hibernate.reactive.query.sql.spi.ReactiveNonSelectQueryPlan;
 import org.hibernate.reactive.sql.exec.internal.StandardReactiveJdbcMutationExecutor;
 import org.hibernate.sql.exec.internal.JdbcParameterBindingsImpl;
@@ -71,8 +72,9 @@ public CompletionStage<Integer> executeReactiveUpdate(DomainQueryExecutionContex
 
 							final SQLQueryParser parser = new SQLQueryParser( sql, null, session.getFactory() );
 
+							Parameters parameters = Parameters.instance( session.getDialect() );
 							final JdbcOperationQueryMutation jdbcMutation = new JdbcOperationQueryMutationNative(
-									parser.process(),
+									parameters.process( parser.process() ),
 									jdbcParameterBinders,
 									affectedTableNames
 							);

hibernate-reactive-core/src/main/java/org/hibernate/reactive/query/sql/internal/ReactiveNativeSelectQueryPlanImpl.java

@@ -11,6 +11,7 @@
 import java.util.Set;
 import java.util.concurrent.CompletionStage;
 
+import org.hibernate.dialect.Dialect;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.results.ResultSetMapping;
 import org.hibernate.query.spi.DomainQueryExecutionContext;
@@ -22,6 +23,7 @@
 import org.hibernate.query.sql.spi.ParameterOccurrence;
 import org.hibernate.query.sqm.internal.SqmJdbcExecutionContextAdapter;
 import org.hibernate.reactive.engine.spi.ReactiveSharedSessionContractImplementor;
+import org.hibernate.reactive.pool.impl.Parameters;
 import org.hibernate.reactive.query.internal.ReactiveResultSetMappingProcessor;
 import org.hibernate.reactive.query.spi.ReactiveNativeSelectQueryPlan;
 import org.hibernate.reactive.sql.exec.internal.StandardReactiveSelectExecutor;
@@ -59,7 +61,8 @@ public ReactiveNativeSelectQueryPlanImpl(
 			resultSetMapping.addAffectedTableNames( affectedTableNames, sessionFactory );
 		}
 		this.affectedTableNames = affectedTableNames;
-		this.sql = parser.process();
+		Dialect dialect = sessionFactory.getJdbcServices().getDialect();
+		this.sql = Parameters.instance( dialect ).process( parser.process() );
 		this.parameterList = parameterList;
 
 	}

hibernate-reactive-core/src/main/java/org/hibernate/reactive/sql/results/internal/ReactiveDeferredResultSetAccess.java

@@ -156,7 +156,6 @@ private CompletionStage<ResultSet> executeQuery() {
 					LOG.tracef( "Executing query to retrieve ResultSet : %s", getFinalSql() );
 
 					Dialect dialect = executionContext.getSession().getJdbcServices().getDialect();
-					// I'm not sure calling Parameters here is necessary, the query should already have the right parameters
 					final String sql = getFinalSql();
 					Object[] parameters = PreparedStatementAdaptor.bind( super::bindParameters );