fix SQLColumnDefinition#getParent() is null, for issue #4492

core/src/main/java/com/alibaba/druid/sql/dialect/odps/parser/OdpsCreateTableParser.java

@@ -210,7 +210,7 @@ public class OdpsCreateTableParser extends SQLCreateTableParser {
                         throw new ParserException("expect identifier. " + lexer.info());
                 }
 
-                stmt.getTableElementList().add(column);
+                stmt.addColumn(column);
 
                 if (lexer.isKeepComments() && lexer.hasComment()) {
                     column.addAfterComment(lexer.readAndResetComments());

core/src/test/java/com/alibaba/druid/bvt/sql/odps/issues/Issue4992.java

@@ -0,0 +1,26 @@
+package com.alibaba.druid.bvt.sql.odps.issues;
+
+import com.alibaba.druid.DbType;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.statement.SQLColumnDefinition;
+import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class Issue4992 {
+    @Test
+    public void testInsert() {
+        String sql = "CREATE TABLE IF NOT EXISTS test_table \n" +
+                "(\n" +
+                "  user_id STRING COMMENT\"userid\"\n" +
+                "  ,user_features STRING COMMENT\"用户特征\"\n" +
+                ")\n" +
+                ";";
+        SQLCreateTableStatement stmt = (SQLCreateTableStatement) SQLUtils.parseSingleStatement(sql, DbType.odps);
+        SQLColumnDefinition column = stmt.getColumn("user_id");
+        assertNotNull(column);
+        assertNotNull(column.getParent());
+        assertSame(stmt, column.getParent());
+    }
+}