加入若干pgsql的接口

Ramitta/Database/SQLite.cs

@@ -1,4 +1,5 @@
-using System.Data;
+using Newtonsoft.Json.Linq;
+using System.Data;
 using System.Data.SQLite;
 using static NPOI.HSSF.Util.HSSFColor;
 
@@ -263,6 +264,60 @@ namespace Ramitta
             }
         }
 
+        public int ExecuteBatchInsert(string tableName, List<string> columns, string columnsStr, List<Dictionary<string, object>> batch, int batchIndex)
+        {
+            var valueParams = new List<string>();
+            var parameters = new Dictionary<string, object>();
+
+            for (int i = 0; i < batch.Count; i++)
+            {
+                var paramNames = columns.Select(col => $"@p{batchIndex}_{i}_{col}").ToList();
+                valueParams.Add($"({string.Join(", ", paramNames)})");
+
+                foreach (var col in columns)
+                {
+                    parameters[$"p{batchIndex}_{i}_{col}"] = batch[i][col] ?? DBNull.Value;
+                }
+            }
+
+            string insertQuery = $"INSERT INTO {tableName} ({columnsStr}) VALUES {string.Join(", ", valueParams)}";
+
+            using (var transaction = db.BeginTransaction())
+            using (var cmd = new SQLiteCommand(insertQuery, db, transaction))
+            {
+                foreach (var param in parameters)
+                {
+                    cmd.Parameters.AddWithValue(param.Key, param.Value);
+                }
+
+                int result = cmd.ExecuteNonQuery();
+                transaction.Commit();
+                return result;
+            }
+        }
+
+        // 修改主方法
+        public int BulkInsert(string tableName, List<Dictionary<string, object>> dataList)
+        {
+            if (dataList == null || dataList.Count == 0)
+                return 0;
+
+            int insertedCount = 0;
+            var columns = dataList[0].Keys.ToList();
+            var columnsStr = string.Join(", ", columns);
+            int batchSize = 500;
+            int batchIndex = 0;  // 添加批次索引
+
+            for (int i = 0; i < dataList.Count; i += batchSize)
+            {
+                var batch = dataList.Skip(i).Take(batchSize).ToList();
+                insertedCount += ExecuteBatchInsert(tableName, columns, columnsStr, batch, batchIndex);
+                batchIndex++;  // 递增批次索引
+            }
+
+            return insertedCount;
+        }
+
         // 释放资源，关闭数据库连接
         // 确保数据库连接在对象销毁时被正确关闭
         public void Dispose()