improved sql parser schema repository.

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/MySqlKey.java

@@ -16,9 +16,11 @@
 package com.alibaba.druid.sql.dialect.mysql.ast;
 
 import com.alibaba.druid.sql.ast.SQLName;
+import com.alibaba.druid.sql.ast.statement.SQLSelectOrderByItem;
 import com.alibaba.druid.sql.ast.statement.SQLTableConstraint;
 import com.alibaba.druid.sql.ast.statement.SQLUnique;
 import com.alibaba.druid.sql.ast.statement.SQLUniqueConstraint;
+import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlAlterTableChangeColumn;
 import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 import com.alibaba.druid.util.JdbcConstants;

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableStatement.java

@@ -28,6 +28,7 @@ import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLObject;
 import com.alibaba.druid.sql.ast.SQLPartitionBy;
 import com.alibaba.druid.sql.ast.statement.*;
+import com.alibaba.druid.sql.dialect.mysql.ast.MySqlKey;
 import com.alibaba.druid.sql.dialect.mysql.ast.MySqlObjectImpl;
 import com.alibaba.druid.sql.dialect.mysql.ast.MySqlPrimaryKey;
 import com.alibaba.druid.sql.dialect.mysql.ast.MySqlUnique;
@@ -295,13 +296,14 @@ public class MySqlCreateTableStatement extends SQLCreateTableStatement implement
             insertIndex = beforeIndex;
         } else if (afterIndex != -1) {
             insertIndex = afterIndex + 1;
+        } else if (item.isFirst()) {
+            insertIndex = 0;
         }
 
         SQLColumnDefinition column = item.getNewColumnDefinition().clone();
         column.setParent(this);
         if (insertIndex == -1 || insertIndex == columnIndex) {
             tableElementList.set(columnIndex, column);
-            return true;
         } else {
             if (insertIndex > columnIndex) {
                 tableElementList.add(insertIndex, column);
@@ -312,6 +314,14 @@ public class MySqlCreateTableStatement extends SQLCreateTableStatement implement
             }
         }
 
+        for (SQLTableElement e : tableElementList) {
+            if(e instanceof MySqlTableIndex) {
+                ((MySqlTableIndex) e).apply(item);
+            } else if (e instanceof MySqlKey) {
+                ((MySqlKey) e).applyColumnRename(columnName, column.getName());
+            }
+        }
+
         return true;
     }
 

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlTableIndex.java

@@ -84,4 +84,8 @@ public class MySqlTableIndex extends MySqlObjectImpl implements SQLTableElement
         }
         return x;
     }
+
+    public boolean apply(MySqlAlterTableChangeColumn x) {
+        return false;
+    }
 }

src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/transform/NameResolveVisitor.java

@@ -18,6 +18,7 @@ package com.alibaba.druid.sql.dialect.mysql.visitor.transform;
 import com.alibaba.druid.sql.SQLUtils;
 import com.alibaba.druid.sql.ast.SQLName;
 import com.alibaba.druid.sql.ast.SQLObject;
+import com.alibaba.druid.sql.ast.SQLStatement;
 import com.alibaba.druid.sql.ast.expr.*;
 import com.alibaba.druid.sql.ast.statement.*;
 import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitorAdapter;
@@ -28,6 +29,16 @@ import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitorAdapter;
 public class NameResolveVisitor extends OracleASTVisitorAdapter {
     public boolean visit(SQLIdentifierExpr x) {
         SQLObject parent = x.getParent();
+
+        if (parent instanceof SQLBinaryOpExpr) {
+            SQLBinaryOpExpr binaryOpExpr = (SQLBinaryOpExpr) parent;
+            boolean isJoinCondition = binaryOpExpr.getLeft() instanceof SQLName
+                    && binaryOpExpr.getRight() instanceof SQLName;
+            if (isJoinCondition) {
+                return false;
+            }
+        }
+
         String name = x.getName();
 
         if ("ROWNUM".equalsIgnoreCase(name)) {

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/expr/OracleOuterExpr.java

@@ -33,6 +33,14 @@ public class OracleOuterExpr extends SQLExprImpl implements OracleExpr {
         this.expr = expr;
     }
 
+    public OracleOuterExpr clone() {
+        OracleOuterExpr x = new OracleOuterExpr();
+        if (expr != null) {
+            x.setExpr(expr.clone());
+        }
+        return x;
+    }
+
     public SQLExpr getExpr() {
         return this.expr;
     }

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/stmt/OracleSelectJoin.java

@@ -145,4 +145,9 @@ public class OracleSelectJoin extends SQLJoinTableSource implements OracleSelect
         }
         this.setRight(tableSource);
     }
+
+    public SQLJoinTableSource join(SQLTableSource right, JoinType joinType, SQLExpr condition) {
+        SQLJoinTableSource joined = new OracleSelectJoin(this, joinType, right, condition);
+        return joined;
+    }
 }