diff --git a/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
index 44094ba2c7..57a59a9641 100644
--- a/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java
@@ -1327,9 +1327,9 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Paramet
     }
 
     protected void printInteger(SQLIntegerExpr x, boolean parameterized) {
-        long val = x.getNumber().longValue();
+        String val = x.getNumber().toString();
 
-        if (val == 1) {
+        if ("1".equals(val)) {
             if (JdbcConstants.ORACLE.equals(dbType)) {
                 SQLObject parent = x.getParent();
                 if (parent instanceof SQLBinaryOpExpr) {
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/UnsignedBigIntTest.java b/src/test/java/com/alibaba/druid/bvt/sql/UnsignedBigIntTest.java
new file mode 100644
index 0000000000..38c05c7ed3
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/UnsignedBigIntTest.java
@@ -0,0 +1,33 @@
+package com.alibaba.druid.bvt.sql;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor;
+import com.alibaba.druid.sql.dialect.postgresql.parser.PGSQLStatementParser;
+import com.alibaba.druid.sql.dialect.postgresql.visitor.PGOutputVisitor;
+import junit.framework.TestCase;
+
+public class UnsignedBigIntTest extends TestCase {
+
+    public void test_mysqlUnsignedBitInt() throws Exception {
+        String sql = "SELECT a from b where c <> 1 LIMIT 18446744073709551615 OFFSET 0";
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        SQLStatement sqlStatement = parser.parseStatement();
+        StringBuilder sb = new StringBuilder();
+        MySqlOutputVisitor visitor = new MySqlOutputVisitor(sb);
+        visitor.setPrettyFormat(false);
+        sqlStatement.accept(visitor);
+        assertEquals("SELECT a FROM b WHERE c <> 1 LIMIT 0, 18446744073709551615", sb.toString());
+    }
+
+    public void test_postgresqlUnsignedBitInt() {
+        String sql = "SELECT a from b where c <> 1 LIMIT 18446744073709551615 OFFSET 1";
+        PGSQLStatementParser parser = new PGSQLStatementParser(sql);
+        SQLStatement sqlStatement = parser.parseStatement();
+        StringBuilder sb = new StringBuilder();
+        PGOutputVisitor visitor = new PGOutputVisitor(sb);
+        visitor.setPrettyFormat(false);
+        sqlStatement.accept(visitor);
+        assertEquals("SELECT a FROM b WHERE c <> 1 LIMIT 18446744073709551615 OFFSET 1", sb.toString());
+    }
+}