removed possibility of empty tablename

Author: wumpz

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

@@ -187,12 +187,12 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 
 TOKEN : /* Numeric Constants */
 {
-	< S_DOUBLE: ((<S_LONG>)? "." <S_LONG> ( ["e","E"] (["+", "-"])? <S_LONG>)?
-				|
-				<S_LONG> "." (["e","E"] (["+", "-"])? <S_LONG>)?
-				|
-				<S_LONG> ["e","E"] (["+", "-"])? <S_LONG>
-				)>
+   < S_DOUBLE: ((<S_LONG>)? "." <S_LONG> ( ["e","E"] (["+", "-"])? <S_LONG>)?
+			|
+			<S_LONG> "." (["e","E"] (["+", "-"])? <S_LONG>)?
+			|
+			<S_LONG> ["e","E"] (["+", "-"])? <S_LONG>
+			)>
   | 	< S_LONG: ( <DIGIT> )+ >
   | 	< #DIGIT: ["0" - "9"] >
 }
@@ -406,8 +406,8 @@ Column Column():
 }
 {
     (
-          LOOKAHEAD(7) databaseName=RelObjectName() "." [schemaName=RelObjectName()] "." [tableName=RelObjectName()] "." columnName=RelObjectName()
-        | LOOKAHEAD(5) schemaName=RelObjectName() "." [tableName=RelObjectName()] "." columnName=RelObjectName()
+          LOOKAHEAD(7) databaseName=RelObjectName() "." [schemaName=RelObjectName()] "." tableName=RelObjectName() "." columnName=RelObjectName()
+        | LOOKAHEAD(5) schemaName=RelObjectName() "." tableName=RelObjectName() "." columnName=RelObjectName()
         | LOOKAHEAD(3) tableName=RelObjectName() "." columnName=RelObjectName()
         | columnName=RelObjectName()
     )

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

@@ -13,6 +13,8 @@
 
 import java.io.*;
 import java.util.*;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import static net.sf.jsqlparser.test.TestUtils.*;
 
@@ -86,35 +88,52 @@ public void testMultiPartColumnNameWithDatabaseNameAndSchemaNameAndTableName() t
 
         assertStatementCanBeDeparsedAs(select, statement);
     }
-    public void testMultiPartColumnNameWithDatabaseNameAndSchemaName() throws Exception {
+	
+	
+    public void testMultiPartColumnNameWithDatabaseNameAndSchemaName() {
         final String statement = "SELECT databaseName.schemaName..columnName FROM tableName";
-        Select select = (Select) parserManager.parse(new StringReader(statement));
-
-        assertStatementCanBeDeparsedAs(select, statement);
+        Select select;
+		try {
+			select = (Select) parserManager.parse(new StringReader(statement));
+			fail("must not work");
+		} catch (JSQLParserException ex) {
+			Logger.getLogger(SelectTest.class.getName()).log(Level.SEVERE, null, ex);
+		}
     }
+	
     public void testMultiPartColumnNameWithDatabaseNameAndTableName() throws Exception {
         final String statement = "SELECT databaseName..tableName.columnName FROM tableName";
         Select select = (Select) parserManager.parse(new StringReader(statement));
 
         assertStatementCanBeDeparsedAs(select, statement);
     }
-    public void testMultiPartColumnNameWithDatabaseName() throws Exception {
+    public void testMultiPartColumnNameWithDatabaseName() {
         final String statement = "SELECT databaseName...columnName FROM tableName";
-        Select select = (Select) parserManager.parse(new StringReader(statement));
-
-        assertStatementCanBeDeparsedAs(select, statement);
+        Select select;
+		try {
+			select = (Select) parserManager.parse(new StringReader(statement));
+			fail("must not work");
+		} catch (JSQLParserException ex) {
+			Logger.getLogger(SelectTest.class.getName()).log(Level.SEVERE, null, ex);
+		}
     }
+	
     public void testMultiPartColumnNameWithSchemaNameAndTableName() throws Exception {
         final String statement = "SELECT schemaName.tableName.columnName FROM tableName";
         Select select = (Select) parserManager.parse(new StringReader(statement));
 
         assertStatementCanBeDeparsedAs(select, statement);
     }
-    public void testMultiPartColumnNameWithSchemaName() throws Exception {
+	
+    public void testMultiPartColumnNameWithSchemaName() {
         final String statement = "SELECT schemaName..columnName FROM tableName";
-        Select select = (Select) parserManager.parse(new StringReader(statement));
-
-        assertStatementCanBeDeparsedAs(select, statement);
+        Select select;
+		try {
+			select = (Select) parserManager.parse(new StringReader(statement));
+			fail("must not work");
+		} catch (JSQLParserException ex) {
+			Logger.getLogger(SelectTest.class.getName()).log(Level.SEVERE, null, ex);
+		}
     }
 
     public void testMultiPartColumnNameWithTableName() throws Exception {