diff --git a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
index 45ef64c1bf..247354b58e 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBinaryOperator.java
@@ -92,6 +92,7 @@ public enum SQLBinaryOperator {
     Assignment(":=", 169),
 
     PG_And("&&", 140),
+    PG_ST_DISTANCE("<->", 20),
     ;
 
     public static int getPriority(SQLBinaryOperator operator) {
diff --git a/src/main/java/com/alibaba/druid/sql/parser/Lexer.java b/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
index 98f4c0feab..c1d1c05628 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/Lexer.java
@@ -690,6 +690,10 @@ public class Lexer {
                 } else if (ch == '@') {
                     scanChar();
                     token = Token.LT_MONKEYS_AT;
+                } else if (ch == '-' && charAt(pos + 1) == '>') {
+                    scanChar();
+                    scanChar();
+                    token = Token.LT_SUB_GT;
                 } else {
                     token = Token.LT;
                 }
diff --git a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index 8dccdf244d..bf7591378a 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -115,48 +115,76 @@ public class SQLExprParser extends SQLParser {
 
     public SQLExpr bitXorRest(SQLExpr expr) {
         Token token = lexer.token;
-        if (token == Token.CARET) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BitwiseXor, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.SUBGT) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGt, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.SUBGTGT) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGtGt, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.POUNDGT) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGt, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.POUNDGTGT) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGtGt, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.QUESQUES) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesQues, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.QUESBAR) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesBar, rightExp, dbType);
-            expr = bitXorRest(expr);
-        } else if (token == Token.QUESAMP) {
-            lexer.nextToken();
-            SQLExpr rightExp = primary();
-            expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesAmp, rightExp, dbType);
-            expr = bitXorRest(expr);
+        switch (token) {
+            case CARET: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.BitwiseXor, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case SUBGT:{
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGt, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case LT_SUB_GT: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PG_ST_DISTANCE, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case SUBGTGT:{
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.SubGtGt, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case POUNDGT: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGt, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case POUNDGTGT: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.PoundGtGt, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case QUESQUES: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesQues, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case QUESBAR: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesBar, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+            case QUESAMP: {
+                lexer.nextToken();
+                SQLExpr rightExp = primary();
+                expr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.QuesAmp, rightExp, dbType);
+                expr = bitXorRest(expr);
+                break;
+            }
+
+            default:
+                break;
         }
 
+
         return expr;
     }
 
diff --git a/src/main/java/com/alibaba/druid/sql/parser/Token.java b/src/main/java/com/alibaba/druid/sql/parser/Token.java
index 9a34972b2d..e0a1ef5241 100644
--- a/src/main/java/com/alibaba/druid/sql/parser/Token.java
+++ b/src/main/java/com/alibaba/druid/sql/parser/Token.java
@@ -299,7 +299,8 @@ public enum Token {
     DOTDOTDOT("..,"), 
     EQ("="), 
     GT(">"), 
-    LT("<"), 
+    LT("<"),
+    LT_SUB_GT("<->"),
     BANG("!"),
     BANGBANG("!!"),
     BANG_TILDE("!~"),
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/postgresql/select/PGSelectTest54.java b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/select/PGSelectTest54.java
new file mode 100644
index 0000000000..ade73e7067
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/postgresql/select/PGSelectTest54.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 1999-2017 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.postgresql.select;
+
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+import junit.framework.TestCase;
+
+import java.util.List;
+
+public class PGSelectTest54 extends TestCase {
+    private final String dbType = JdbcConstants.POSTGRESQL;
+
+    public void test_0() throws Exception {
+        String sql = "select gid, kind, mapid, poi_id, telephone, admincode, x, y, zipcode, name, address, street, number,geom from public.v_poi order by public.v_poi.geom <-> st_point(?,?) limit 1";
+
+        List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, dbType);
+        SQLStatement stmt = stmtList.get(0);
+
+        assertEquals("SELECT gid, kind, mapid, poi_id, telephone\n" +
+                "\t, admincode, x, y, zipcode, name\n" +
+                "\t, address, street, number, geom\n" +
+                "FROM public.v_poi\n" +
+                "ORDER BY public.v_poi.geom <-> st_point(?, ?)\n" +
+                "LIMIT 1", SQLUtils.toPGString(stmt));
+        
+        assertEquals("select gid, kind, mapid, poi_id, telephone\n" +
+                "\t, admincode, x, y, zipcode, name\n" +
+                "\t, address, street, number, geom\n" +
+                "from public.v_poi\n" +
+                "order by public.v_poi.geom <-> st_point(?, ?)\n" +
+                "limit 1", SQLUtils.toPGString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION));
+
+        assertEquals(1, stmtList.size());
+
+        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(dbType);
+        stmt.accept(visitor);
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+
+        assertEquals(14, visitor.getColumns().size());
+        assertEquals(1, visitor.getTables().size());
+    }
+}