added cross join syntax support

Author: wumpz

README.md

@@ -9,6 +9,7 @@ Original project websites:
 
 ## Extensions Version 0.8.3
 
+* Added support for cross join 
 * Allowed complex expressions in extract from
 * Corrected cast expression to make type parameters usable (e.g. cast(col1 as varchar(255))
 * Added support for column comma list in partition by statements

src/main/java/net/sf/jsqlparser/statement/select/Join.java

@@ -38,6 +38,7 @@ public class Join {
 	private boolean full = false;
 	private boolean inner = false;
 	private boolean simple = false;
+	private boolean cross = false;
 	private FromItem rightItem;
 	private Expression onExpression;
 	private List<Column> usingColumns;
@@ -133,6 +134,14 @@ public void setFull(boolean b) {
 		full = b;
 	}
 
+	public boolean isCross() {
+		return cross;
+	}
+
+	public void setCross(boolean cross) {
+		this.cross = cross;
+	}
+
 	/**
 	 * Returns the right item of the join
 	 */
@@ -182,6 +191,8 @@ public String toString() {
 				type += "FULL ";
 			} else if (isLeft()) {
 				type += "LEFT ";
+			} else if (isCross()) {
+				type += "CROSS ";
 			}
 
 			if (isOuter()) {

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

@@ -264,6 +264,8 @@ public void deparseJoin(Join join) {
 				buffer.append(" FULL");
 			} else if (join.isLeft()) {
 				buffer.append(" LEFT");
+			} else if (join.isCross()) {
+				buffer.append(" CROSS");
 			}
 
 			if (join.isOuter()) {

src/main/javacc/net/sf/jsqlparser/parser/JSqlParserCC.jj

@@ -189,6 +189,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_DROP:"DROP">
 |   <K_JOIN:"JOIN">
 |   <K_LEFT:"LEFT">
+|   <K_CROSS:"CROSS">
 |   <K_FROM:"FROM">
 |   <K_OPEN:"OPEN">
 |   <K_CASE:"CASE">
@@ -855,12 +856,21 @@ Join JoinerExpression():
 	List<Column> columns = null;
 }
 {
-
+	/*
+		Refactor to be more restrictive.
+			left [outer] join
+			right [outer] join
+			full [outer] join
+			[inner] join
+			cross join
+			natural join
+     */
 	  [ (
 	  	<K_LEFT> { join.setLeft(true); }
   		| <K_RIGHT> { join.setRight(true); } 
   		| <K_FULL> { join.setFull(true); } 
   		| <K_NATURAL> { join.setNatural(true); } 
+		| <K_CROSS> { join.setCross(true); } 
   		)
   	   ]
 

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

@@ -799,6 +799,11 @@ public void testMultiTableJoin() throws JSQLParserException {
 		String stmt = "SELECT * FROM taba INNER JOIN tabb ON taba.a = tabb.a, tabc LEFT JOIN tabd ON tabc.c = tabd.c";
 		assertSqlCanBeParsedAndDeparsed(stmt);
 	}
+	
+	public void testTableCrossJoin() throws JSQLParserException {
+		String stmt = "SELECT * FROM taba CROSS JOIN tabb";
+		assertSqlCanBeParsedAndDeparsed(stmt);
+	}
 
 	public void testLateral1() throws JSQLParserException {
 		String stmt = "SELECT O.ORDERID, O.CUSTNAME, OL.LINETOTAL FROM ORDERS AS O, LATERAL(SELECT SUM(NETAMT) AS LINETOTAL FROM ORDERLINES AS LINES WHERE LINES.ORDERID = O.ORDERID) AS OL";