fix: add some public getters

- fixes #2201

Signed-off-by: Andreas Reichel <andreas@manticore-projects.com>

Author: manticore-projects

src/main/java/net/sf/jsqlparser/expression/PreferringClause.java

@@ -39,6 +39,24 @@ public void toStringPreferring(StringBuilder b) {
         }
     }
 
+    public Expression getPreferring() {
+        return preferring;
+    }
+
+    public PreferringClause setPreferring(Expression preferring) {
+        this.preferring = preferring;
+        return this;
+    }
+
+    public PartitionByClause getPartitionBy() {
+        return partitionBy;
+    }
+
+    public PreferringClause setPartitionBy(PartitionByClause partitionBy) {
+        this.partitionBy = partitionBy;
+        return this;
+    }
+
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();

src/main/java/net/sf/jsqlparser/statement/DeclareStatement.java

@@ -120,6 +120,8 @@ public List<TypeDefExpr> getTypeDefinitions() {
         return typeDefExprList;
     }
 
+
+
     @Override
     public String toString() {
         StringBuilder b = new StringBuilder("DECLARE ");
@@ -213,5 +215,17 @@ public TypeDefExpr(UserVariable userVariable, ColDataType colDataType,
             this.colDataType = colDataType;
             this.defaultExpr = defaultExpr;
         }
+
+        public UserVariable getUserVariable() {
+            return userVariable;
+        }
+
+        public ColDataType getColDataType() {
+            return colDataType;
+        }
+
+        public Expression getDefaultExpr() {
+            return defaultExpr;
+        }
     }
 }

src/test/java/net/sf/jsqlparser/statement/insert/InsertTest.java

@@ -27,6 +27,7 @@
 import net.sf.jsqlparser.statement.select.*;
 import net.sf.jsqlparser.statement.update.Update;
 import net.sf.jsqlparser.statement.update.UpdateSet;
+import net.sf.jsqlparser.test.TestUtils;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.function.Executable;
@@ -902,4 +903,18 @@ public void testOverridingSystemValueInsertsParseWithTableNamedOverriding(String
         assertEquals(true, insert.isOverriding());
     }
 
+    @Test
+    void insertDemo() {
+        Insert insert =
+                new Insert()
+                        .withTable(new Table("test"))
+                        .withSelect(
+                                new Values()
+                                        .addExpressions(
+                                                new StringValue("A"), new StringValue("B")));
+
+        TestUtils.assertStatementCanBeDeparsedAs(
+                insert, "INSERT INTO test VALUES ('A', 'B')");
+    }
+
 }