added support for T-SQL left and right joins (*= and =*)

Author: Nico

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

@@ -48,6 +48,8 @@
 import net.sf.jsqlparser.expression.operators.relational.NotEqualsTo;
 import net.sf.jsqlparser.expression.operators.relational.RegExpMatchOperator;
 import net.sf.jsqlparser.expression.operators.relational.RegExpMySQLOperator;
+import net.sf.jsqlparser.expression.operators.relational.TSQLLeftJoin;
+import net.sf.jsqlparser.expression.operators.relational.TSQLRightJoin;
 import net.sf.jsqlparser.expression.operators.relational.JsonOperator;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.statement.select.SubSelect;
@@ -180,4 +182,8 @@ public interface ExpressionVisitor {
 
     public void visit(NotExpression aThis);
 
+    public void visit(TSQLLeftJoin tsqlLeftJoin);
+
+    public void visit(TSQLRightJoin tsqlRightJoin);
+
 }

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

@@ -24,7 +24,6 @@
 import net.sf.jsqlparser.expression.operators.arithmetic.*;
 import net.sf.jsqlparser.expression.operators.conditional.AndExpression;
 import net.sf.jsqlparser.expression.operators.conditional.OrExpression;
-import net.sf.jsqlparser.expression.operators.relational.JsonOperator;
 import net.sf.jsqlparser.expression.operators.relational.*;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.statement.select.AllColumns;
@@ -508,4 +507,14 @@ public void visit(DateTimeLiteralExpression literal) {
 
     }
 
+    @Override
+    public void visit(TSQLLeftJoin tsqlLeftJoin) {
+        visitBinaryExpression(tsqlLeftJoin);
+    }
+
+    @Override
+    public void visit(TSQLRightJoin tsqlRightJoin) {
+        visitBinaryExpression(tsqlRightJoin);
+    }
+
 }

src/main/java/net/sf/jsqlparser/expression/operators/relational/TSQLLeftJoin.java

@@ -0,0 +1,36 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2013 JSQLParser
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as 
+ * published by the Free Software Foundation, either version 2.1 of the 
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Lesser Public 
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ * #L%
+ */
+package net.sf.jsqlparser.expression.operators.relational;
+
+import net.sf.jsqlparser.expression.ExpressionVisitor;
+
+public class TSQLLeftJoin extends ComparisonOperator {
+
+    public TSQLLeftJoin() {
+        super("*=");
+    }
+
+    @Override
+    public void accept(ExpressionVisitor expressionVisitor) {
+        expressionVisitor.visit(this);
+    }
+}

src/main/java/net/sf/jsqlparser/expression/operators/relational/TSQLRightJoin.java

@@ -0,0 +1,36 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2013 JSQLParser
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as 
+ * published by the Free Software Foundation, either version 2.1 of the 
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Lesser Public 
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ * #L%
+ */
+package net.sf.jsqlparser.expression.operators.relational;
+
+import net.sf.jsqlparser.expression.ExpressionVisitor;
+
+public class TSQLRightJoin extends ComparisonOperator {
+
+    public TSQLRightJoin() {
+        super("=*");
+    }
+
+    @Override
+    public void accept(ExpressionVisitor expressionVisitor) {
+        expressionVisitor.visit(this);
+    }
+}

src/main/java/net/sf/jsqlparser/util/TablesNamesFinder.java

@@ -91,6 +91,8 @@
 import net.sf.jsqlparser.expression.operators.relational.NotEqualsTo;
 import net.sf.jsqlparser.expression.operators.relational.RegExpMatchOperator;
 import net.sf.jsqlparser.expression.operators.relational.RegExpMySQLOperator;
+import net.sf.jsqlparser.expression.operators.relational.TSQLLeftJoin;
+import net.sf.jsqlparser.expression.operators.relational.TSQLRightJoin;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.schema.Table;
 import net.sf.jsqlparser.statement.Block;
@@ -859,4 +861,14 @@ public void visit(DescribeStatement describe) {
     public void visit(ExplainStatement explain) {
         explain.getStatement().accept(this);
     }
+
+    @Override
+    public void visit(TSQLLeftJoin tsqlLeftJoin) {
+        visitBinaryExpression(tsqlLeftJoin);
+    }
+
+    @Override
+    public void visit(TSQLRightJoin tsqlRightJoin) {
+        visitBinaryExpression(tsqlRightJoin);
+    }
 }

src/main/java/net/sf/jsqlparser/util/deparser/ExpressionDeParser.java

@@ -94,6 +94,8 @@
 import net.sf.jsqlparser.expression.operators.relational.RegExpMatchOperator;
 import net.sf.jsqlparser.expression.operators.relational.RegExpMySQLOperator;
 import net.sf.jsqlparser.expression.operators.relational.SupportsOldOracleJoinSyntax;
+import net.sf.jsqlparser.expression.operators.relational.TSQLLeftJoin;
+import net.sf.jsqlparser.expression.operators.relational.TSQLRightJoin;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.schema.Table;
 import net.sf.jsqlparser.statement.select.OrderByElement;
@@ -812,4 +814,14 @@ public void visit(DateTimeLiteralExpression literal) {
         buffer.append(literal.toString());
     }
 
+    @Override
+    public void visit(TSQLLeftJoin tsqlLeftJoin) {
+        visitBinaryExpression(tsqlLeftJoin, " *= ");
+    }
+
+    @Override
+    public void visit(TSQLRightJoin tsqlRightJoin) {
+        visitBinaryExpression(tsqlRightJoin, " =* ");
+    }
+
 }

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -2182,6 +2182,8 @@ Expression RegularCondition() #RegularCondition:
     ">" { result = new GreaterThan(); }
     | "<" { result = new MinorThan(); }
     | "=" { result = new EqualsTo(); }
+    | "*=" { result = new TSQLLeftJoin(); }
+    | "=*" { result = new TSQLRightJoin(); }
     | token=<OP_GREATERTHANEQUALS> { result = new GreaterThanEquals(token.image); }
     | token=<OP_MINORTHANEQUALS> { result = new MinorThanEquals(token.image); }
     | token=<OP_NOTEQUALSSTANDARD> { result = new NotEqualsTo(token.image); }

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -1810,12 +1810,24 @@ public void testFunctionRight() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed(statement);
     }
 
+    @Test
+    public void testTSQLJoin() throws JSQLParserException {
+        String stmt = "SELECT * FROM tabelle1, tabelle2 WHERE tabelle1.a *= tabelle2.b";
+        assertSqlCanBeParsedAndDeparsed(stmt);
+    }
+
+    @Test
+    public void testTSQLJoin2() throws JSQLParserException {
+        String stmt = "SELECT * FROM tabelle1, tabelle2 WHERE tabelle1.a =* tabelle2.b";
+        assertSqlCanBeParsedAndDeparsed(stmt);
+    }
+    
     @Test
     public void testOracleJoin() throws JSQLParserException {
         String stmt = "SELECT * FROM tabelle1, tabelle2 WHERE tabelle1.a = tabelle2.b(+)";
         assertSqlCanBeParsedAndDeparsed(stmt);
     }
-
+    
     @Test
     public void testOracleJoin2() throws JSQLParserException {
         String stmt = "SELECT * FROM tabelle1, tabelle2 WHERE tabelle1.a(+) = tabelle2.b";