fixes #119

Author: wumpz

README.md

@@ -34,6 +34,12 @@ Also I would like to know about needed examples or documentation stuff.
 
 ## Extensions in the latest SNAPSHOT version 0.9.3
 
+* support for with recursive
+
+```sql
+WITH RECURSIVE data as (SELECT ...) ...
+```
+
 * support for oracles old join syntax improved
 
 ```sql

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

@@ -28,60 +28,69 @@
  */
 public class WithItem implements SelectBody {
 
-	private String name;
-	private List<SelectItem> withItemList;
-	private SelectBody selectBody;
+    private String name;
+    private List<SelectItem> withItemList;
+    private SelectBody selectBody;
+    private boolean recursive;
 
-	/**
-	 * The name of this WITH item (for example, "myWITH" in "WITH myWITH AS
-	 * (SELECT A,B,C))"
-	 *
-	 * @return the name of this WITH
-	 */
-	public String getName() {
-		return name;
-	}
+    /**
+     * The name of this WITH item (for example, "myWITH" in "WITH myWITH AS
+     * (SELECT A,B,C))"
+     *
+     * @return the name of this WITH
+     */
+    public String getName() {
+        return name;
+    }
 
-	public void setName(String name) {
-		this.name = name;
-	}
+    public void setName(String name) {
+        this.name = name;
+    }
 
-	/**
-	 * The {@link SelectBody} of this WITH item is the part after the "AS"
-	 * keyword
-	 *
-	 * @return {@link SelectBody} of this WITH item
-	 */
-	public SelectBody getSelectBody() {
-		return selectBody;
-	}
+    public boolean isRecursive() {
+        return recursive;
+    }
 
-	public void setSelectBody(SelectBody selectBody) {
-		this.selectBody = selectBody;
-	}
+    public void setRecursive(boolean recursive) {
+        this.recursive = recursive;
+    }
 
-	/**
-	 * The {@link SelectItem}s in this WITH (for example the A,B,C in "WITH
-	 * mywith (A,B,C) AS ...")
-	 *
-	 * @return a list of {@link SelectItem}s
-	 */
-	public List<SelectItem> getWithItemList() {
-		return withItemList;
-	}
+    /**
+     * The {@link SelectBody} of this WITH item is the part after the "AS"
+     * keyword
+     *
+     * @return {@link SelectBody} of this WITH item
+     */
+    public SelectBody getSelectBody() {
+        return selectBody;
+    }
 
-	public void setWithItemList(List<SelectItem> withItemList) {
-		this.withItemList = withItemList;
-	}
+    public void setSelectBody(SelectBody selectBody) {
+        this.selectBody = selectBody;
+    }
 
-	@Override
-	public String toString() {
-		return name + ((withItemList != null) ? " " + PlainSelect.getStringList(withItemList, true, true) : "")
-				+ " AS (" + selectBody + ")";
-	}
+    /**
+     * The {@link SelectItem}s in this WITH (for example the A,B,C in "WITH
+     * mywith (A,B,C) AS ...")
+     *
+     * @return a list of {@link SelectItem}s
+     */
+    public List<SelectItem> getWithItemList() {
+        return withItemList;
+    }
 
-	@Override
-	public void accept(SelectVisitor visitor) {
-		visitor.visit(this);
-	}
+    public void setWithItemList(List<SelectItem> withItemList) {
+        this.withItemList = withItemList;
+    }
+
+    @Override
+    public String toString() {
+        return (recursive ? "RECURSIVE " : "") + name + ((withItemList != null) ? " " + PlainSelect.getStringList(withItemList, true, true) : "")
+                + " AS (" + selectBody + ")";
+    }
+
+    @Override
+    public void accept(SelectVisitor visitor) {
+        visitor.visit(this);
+    }
 }

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

@@ -288,33 +288,33 @@ public void deparseLimit(Limit limit) {
 
     public void deparseOffset(Offset offset) {
         // OFFSET offset
-    	// or OFFSET offset (ROW | ROWS)
+        // or OFFSET offset (ROW | ROWS)
         if (offset.isOffsetJdbcParameter()) {
             buffer.append(" OFFSET ?");
         } else if (offset.getOffset() != 0) {
             buffer.append(" OFFSET ");
             buffer.append(offset.getOffset());
         }
         if (offset.getOffsetParam() != null) {
-        	buffer.append(" ").append(offset.getOffsetParam());
+            buffer.append(" ").append(offset.getOffsetParam());
         }
 
     }
 
     public void deparseFetch(Fetch fetch) {
         // FETCH (FIRST | NEXT) row_count (ROW | ROWS) ONLY
-    	buffer.append(" FETCH ");
-    	if (fetch.isFetchParamFirst()) {
-    		buffer.append("FIRST ");
-    	} else {
-    		buffer.append("NEXT ");
-    	}
-    	if (fetch.isFetchJdbcParameter()) {
-    		buffer.append("?");
-    	} else {
-    		buffer.append(fetch.getRowCount());
-    	}
-    	buffer.append(" ").append(fetch.getFetchParam()).append(" ONLY");
+        buffer.append(" FETCH ");
+        if (fetch.isFetchParamFirst()) {
+            buffer.append("FIRST ");
+        } else {
+            buffer.append("NEXT ");
+        }
+        if (fetch.isFetchJdbcParameter()) {
+            buffer.append("?");
+        } else {
+            buffer.append(fetch.getRowCount());
+        }
+        buffer.append(" ").append(fetch.getFetchParam()).append(" ONLY");
 
     }
 
@@ -421,8 +421,11 @@ public void visit(SetOperationList list) {
 
     @Override
     public void visit(WithItem withItem) {
+        if (withItem.isRecursive()) {
+            buffer.append("RECURSIVE ");
+        }
         buffer.append(withItem.getName());
-        if (withItem.getWithItemList()!=null) {
+        if (withItem.getWithItemList() != null) {
             buffer.append(" ").append(PlainSelect.getStringList(withItem.getWithItemList(), true, true));
         }
         buffer.append(" AS (");

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

@@ -208,6 +208,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_UNIQUE:"UNIQUE">
 |   <K_WITHIN:"WITHIN">
 |   <K_IF:"IF">
+|   <K_RECURSIVE:"RECURSIVE">
 }
 
 TOKEN : /* Numeric Constants */
@@ -699,7 +700,7 @@ WithItem WithItem():
 	SelectBody selectBody = null;
 }
 {
-	 name=RelObjectName() { with.setName(name); }
+	 [ <K_RECURSIVE> { with.setRecursive(true); } ] name=RelObjectName() { with.setName(name); }
 	 [ "(" selectItems=SelectItemsList() ")" { with.setWithItemList(selectItems); } ]
 	 <K_AS>
 	 "(" selectBody = SelectBody() { with.setSelectBody(selectBody); } ")"

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

@@ -891,6 +891,10 @@ public void testWith() throws JSQLParserException {
                 + "WHERE THIS_EMP.JOB = 'SALESREP' AND THIS_EMP.WORKDEPT = DINFO.DEPTNO";
         assertSqlCanBeParsedAndDeparsed(statement);
     }
+    
+    public void testWithRecursive() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("WITH RECURSIVE t (n) AS ((SELECT 1) UNION ALL (SELECT n + 1 FROM t WHERE n < 100)) SELECT sum(n) FROM t");
+    }
 
     public void testSelectAliasInQuotes() throws JSQLParserException {
         String statement = "SELECT mycolumn AS \"My Column Name\" FROM mytable";