From 795e6bbee671fa9fd769502810ed27801a56499a Mon Sep 17 00:00:00 2001
From: changxing <1278729001@qq.com>
Date: Tue, 28 May 2024 13:22:48 +0800
Subject: [PATCH] =?UTF-8?q?#26=EF=BC=9A=E4=BF=AE=E5=A4=8D=20Hive=20?=
 =?UTF-8?q?=E5=BB=BA=E8=A1=A8=E8=AF=AD=E5=8F=A5=E4=B8=AD=20DECIMAL?=
 =?UTF-8?q?=E3=80=81VARCHAR=E3=80=81CHAR=20=E7=B1=BB=E5=9E=8B=E6=B2=A1?=
 =?UTF-8?q?=E6=9C=89=E5=8F=82=E6=95=B0=E7=9A=84=E9=97=AE=E9=A2=98?=
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---
 metasequoia_sql/core/node.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/metasequoia_sql/core/node.py b/metasequoia_sql/core/node.py
index 1a15281..a0b9edc 100644
--- a/metasequoia_sql/core/node.py
+++ b/metasequoia_sql/core/node.py
@@ -1348,8 +1348,15 @@ class ASTColumnTypeExpression(ASTBase):
     params: Optional[Tuple[ASTExpressionBase, ...]] = dataclasses.field(kw_only=True, default=None)
 
     def source(self, sql_type: SQLType = SQLType.DEFAULT) -> str:
-        """返回语法节点的 SQL 源码"""
-        if self.params is None or sql_type == SQLType.HIVE:
+        """返回语法节点的 SQL 源码
+        
+        TODO：后续计划将类型的处理，移动到翻译器中，而不是放置在 Node 节点中，因为这并不是一个适用于所有应用场景的功能，可能会引发特殊的 Bug
+        """
+        # 如果没有参数，则不添加参数
+        if self.params is None:
+            return self.name
+        # 如果为 Hive 中没有参数的类型，也不添加参数
+        if sql_type == SQLType.HIVE and self.name.upper() not in {"DECIMAL", "VARCHAR", "CHAR"}:
             return self.name
         # MySQL 标准导出逗号间没有空格
         type_params = "(" + ",".join([param.source(sql_type) for param in self.params]) + ")"