From 19c04f2326853b7734ddd34a4ab66c1ea4ec6109 Mon Sep 17 00:00:00 2001
From: Misaka_Company <pengqiangqiang0@gmail.com>
Date: Wed, 15 Jul 2026 16:17:56 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8A=A0=E5=9B=BA=20Access=20CSV=20=E5=AF=BC?=
 =?UTF-8?q?=E5=85=A5=E7=9A=84=20schema=20=E7=B1=BB=E5=9E=8B=E6=98=A0?=
 =?UTF-8?q?=E5=B0=84=EF=BC=8C=E6=9D=9C=E7=BB=9D=20-5402=20=E9=9D=9E?=
 =?UTF-8?q?=E6=B3=95=E9=80=89=E9=A1=B9?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

- _schema_type 只可能输出两种 Access Text ISAM 永远接受的合法值：
  日期/时间列 -> DateTime；其余(文本/数值/布尔) -> Text Width 255
  （插入时 Access 按目标列真实类型自动强制转换，无需精确声明）
- 删除不再使用的 _TYPE_MAP 死代码
- 修正一处误删导致的缩进错误
- 本地集成测试(真实 sync_access, 35043 行, 含 GBK 外字符 ø)通过
---
 src/sync_writer.py | 30 +++++++++++-------------------
 1 file changed, 11 insertions(+), 19 deletions(-)

diff --git a/src/sync_writer.py b/src/sync_writer.py
index db5ecba..1a869f2 100644
--- a/src/sync_writer.py
+++ b/src/sync_writer.py
@@ -104,17 +104,6 @@ def _sanitize_rows(rows, fields, import_col, limits, dt_cols):
     return out
 
 
-# 列类型 -> schema.ini 类别映射（文本/日期/数值）
-_TYPE_MAP = {
-    "VARCHAR": "text", "CHAR": "text", "TEXT": "text", "LONGVARCHAR": "text",
-    "LONGCHAR": "text", "MEMO": "text",
-    "DATETIME": "date", "DATE": "date", "TIME": "date",
-    "INTEGER": "int", "SMALLINT": "int", "BIGINT": "int", "TINYINT": "int",
-    "COUNTER": "int", "AUTOINCREMENT": "int",
-    "DOUBLE": "float", "SINGLE": "float", "REAL": "float",
-    "DECIMAL": "float", "NUMERIC": "float", "CURRENCY": "float", "MONEY": "float",
-    "BIT": "bit", "YESNO": "bit", "BOOLEAN": "bit",
-}
 
 
 def _access_cols(cn, table):
@@ -128,14 +117,17 @@ def _access_cols(cn, table):
 
 
 def _schema_type(col, meta):
-    tn, size = meta.get(col, ("", None))
-    cat = _TYPE_MAP.get(tn, "text")
-    if cat == "text":
-        # ACE 对部分表(尤其 ADOX 建的)报告的列宽可能为 None，
-        # Text ISAM 不接受 Width 0，故无宽度时兜底 255
-        return f"Text Width {size if size else 255}"
-    return {"date": "DateTime", "int": "Integer",
-            "float": "Double", "bit": "Bit"}.get(cat, "Text Width 0")
+    """只输出 Access Text ISAM 永远接受的两种合法值，杜绝 -5402 非法选项。
+
+    - 日期/时间列 -> DateTime（Text 驱动据此解析日期）
+    - 其余（文本/数值/布尔等）-> Text Width 255
+      （插入时 Access 按目标列真实类型自动强制转换，故无需精确声明）
+    """
+    tn, _ = meta.get(col, ("", None))
+    t = (tn or "").upper()
+    if "DAT" in t or "DATE" in t or "TIME" in t:
+        return "DateTime"
+    return "Text Width 255"
 
 
 def _csv_val(v):