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src/main/java/net/sf/jsqlparser/parser/feature/Feature.java

@@ -505,6 +505,12 @@ public enum Feature {
      * @see CreateSequence
      */
     createSequence,
+    /**
+     * SQL "CREATE SYNONYM" statement is allowed
+     *
+     * @see CreateSynonym
+     */
+    createSynonym,
     /**
      * SQL "CREATE TRIGGER" statement is allowed
      */

src/main/java/net/sf/jsqlparser/util/validation/metadata/NamedObject.java

@@ -38,6 +38,7 @@ public enum NamedObject {
      * a name constisting of max. 3 identifiers, i.e. [catalog].[schema].[sequence]
      */
     sequence,
+    synonym,
     procedure,
     user,
     role,

src/main/java/net/sf/jsqlparser/util/validation/validator/CreateSynonymValidator.java

@@ -0,0 +1,29 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2020 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
+package net.sf.jsqlparser.util.validation.validator;
+
+import net.sf.jsqlparser.parser.feature.Feature;
+import net.sf.jsqlparser.statement.create.synonym.CreateSynonym;
+import net.sf.jsqlparser.util.validation.ValidationCapability;
+import net.sf.jsqlparser.util.validation.metadata.NamedObject;
+
+/**
+ * @author gitmotte
+ */
+public class CreateSynonymValidator extends AbstractValidator<CreateSynonym> {
+
+    @Override
+    public void validate(CreateSynonym statement) {
+        for (ValidationCapability c : getCapabilities()) {
+            validateFeature(Feature.createSynonym);
+            validateName(c, NamedObject.synonym, statement.getSynonym().getFullyQualifiedName(), false);
+        }
+    }
+}

src/main/java/net/sf/jsqlparser/util/validation/validator/StatementValidator.java

@@ -31,6 +31,7 @@
 import net.sf.jsqlparser.statement.create.procedure.CreateProcedure;
 import net.sf.jsqlparser.statement.create.schema.CreateSchema;
 import net.sf.jsqlparser.statement.create.sequence.CreateSequence;
+import net.sf.jsqlparser.statement.create.synonym.CreateSynonym;
 import net.sf.jsqlparser.statement.create.table.CreateTable;
 import net.sf.jsqlparser.statement.create.view.AlterView;
 import net.sf.jsqlparser.statement.create.view.CreateView;
@@ -248,4 +249,9 @@ public void validate(Statement statement) {
         statement.accept(this);
     }
 
+    @Override
+    public void visit(CreateSynonym createSynonym) {
+        getValidator(CreateSynonymValidator.class).validate(createSynonym);
+    }
+
 }