fixes #102

Author: wumpz

pom.xml

@@ -298,8 +298,6 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 
-	<description>
-		JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes.
-		The generated hierarchy can be navigated using the Visitor Pattern.
-	</description>
+	<description>JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes.
+The generated hierarchy can be navigated using the Visitor Pattern.</description>
 </project>

src/main/java/net/sf/jsqlparser/statement/create/table/CreateTable.java

@@ -42,6 +42,7 @@ public class CreateTable implements Statement {
     private List<ColumnDefinition> columnDefinitions;
     private List<Index> indexes;
     private Select select;
+    private boolean ifNotExists = false;
 
     @Override
     public void accept(StatementVisitor statementVisitor) {
@@ -121,14 +122,22 @@ public void setSelect(Select select) {
         this.select = select;
     }
 
+    public boolean isIfNotExists() {
+        return ifNotExists;
+    }
+
+    public void setIfNotExists(boolean ifNotExists) {
+        this.ifNotExists = ifNotExists;
+    }
+
     @Override
     public String toString() {
         String sql = "";
         String createOps = PlainSelect.getStringList(createOptionsStrings, false, false);
 
         sql = "CREATE " + (unlogged ? "UNLOGGED " : "") + 
                 (!"".equals(createOps)?createOps + " ":"") +
-                "TABLE " + table;
+                "TABLE " + (ifNotExists?"IF NOT EXISTS ":"") + table;
 
         if (select != null) {
             sql += " AS " + select.toString();

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

@@ -53,7 +53,11 @@ public void deParse(CreateTable createTable) {
             buffer.append(params).append(' ');
         }
 
-        buffer.append("TABLE ").append(createTable.getTable().getFullyQualifiedName());
+        buffer.append("TABLE ");
+        if (createTable.isIfNotExists()) {
+            buffer.append("IF NOT EXISTS ");
+        }
+        buffer.append(createTable.getTable().getFullyQualifiedName());
         if (createTable.getSelect() != null) {
             buffer.append(" AS ").append(createTable.getSelect().toString());
         } else {
@@ -87,7 +91,7 @@ public void deParse(CreateTable createTable) {
                 buffer.append(")");
             }
         }
-        
+
         params = PlainSelect.getStringList(createTable.getTableOptionsStrings(), false, false);
         if (!"".equals(params)) {
             buffer.append(' ').append(params);

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

@@ -207,6 +207,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_COMMIT:"COMMIT">
 |   <K_UNIQUE:"UNIQUE">
 |   <K_WITHIN:"WITHIN">
+|   <K_IF:"IF">
 }
 
 TOKEN : /* Numeric Constants */
@@ -2152,7 +2153,9 @@ CreateTable CreateTable():
     [ <K_UNLOGGED> { createTable.setUnlogged(true); } ]
 	(parameter = CreateParameter() { createOptions.add(parameter); })*
 
-	<K_TABLE> table=Table()
+	<K_TABLE> 
+    [ <K_IF> <K_NOT> <K_EXISTS> { createTable.setIfNotExists(true); }]
+    table=Table()
 	[
 		("("
 		(columnName=<S_IDENTIFIER>
@@ -2344,7 +2347,7 @@ String CreateParameter():
 			tk=<K_NOT> { retval = tk.image; }
 			|
 			tk=<K_PRIMARY> { retval = tk.image; }
-			|
+            |
 			tk=<K_KEY> { retval = tk.image; }
 			|
 			tk=<S_CHAR_LITERAL> { retval = tk.image; }

src/test/java/net/sf/jsqlparser/test/create/CreateTableTest.java

@@ -107,6 +107,10 @@ public void testCreateTableDefault() throws JSQLParserException {
     public void testCreateTableDefault2() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("CREATE TABLE T1 (id integer default 1)");
     }
+    
+    public void testCreateTableIfNotExists() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("CREATE TABLE IF NOT EXISTS animals (id INT NOT NULL)");
+    }
 
 	public void testRUBiSCreateList() throws Exception {
 		BufferedReader in = new BufferedReader(new InputStreamReader(CreateTableTest.class.getResourceAsStream("/RUBiS-create-requests.txt")));