mirror of
https://github.com/nsnail/FreeSql.git
synced 2025-04-19 17:22:50 +08:00
205 lines
10 KiB
C#
205 lines
10 KiB
C#
using FreeSql;
|
||
using FreeSql.Internal.CommonProvider;
|
||
using FreeSql.Internal.Model;
|
||
using Kdbndp;
|
||
using System;
|
||
using System.Collections.Generic;
|
||
using System.Data;
|
||
using System.Linq;
|
||
using System.Text;
|
||
|
||
public static partial class FreeSqlKingbaseESGlobalExtensions
|
||
{
|
||
|
||
/// <summary>
|
||
/// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
|
||
/// </summary>
|
||
/// <param name="that"></param>
|
||
/// <param name="args"></param>
|
||
/// <returns></returns>
|
||
public static string FormatKingbaseES(this string that, params object[] args) => _kingbaseesAdo.Addslashes(that, args);
|
||
static FreeSql.KingbaseES.KingbaseESAdo _kingbaseesAdo = new FreeSql.KingbaseES.KingbaseESAdo();
|
||
|
||
#region ExecuteKdbCopy
|
||
/// <summary>
|
||
/// 批量插入或更新（操作的字段数量超过 2000 时收益大）<para></para>
|
||
/// 实现原理：使用 Copy 插入临时表，再执行 INSERT INTO t1 select * from #temp ON CONFLICT(""id"") DO UPDATE SET ...
|
||
/// </summary>
|
||
/// <typeparam name="T"></typeparam>
|
||
/// <param name="that"></param>
|
||
/// <returns></returns>
|
||
public static int ExecuteKdbCopy<T>(this IInsertOrUpdate<T> that) where T : class
|
||
{
|
||
var upsert = that as InsertOrUpdateProvider<T>;
|
||
if (upsert._source.Any() != true || upsert._tempPrimarys.Any() == false) return 0;
|
||
var state = ExecuteKdbCopyState(upsert);
|
||
return UpdateProvider.ExecuteBulkUpsert(upsert, state, insert => insert.ExecuteKdbCopy());
|
||
}
|
||
static NativeTuple<string, string, string, string, string[]> ExecuteKdbCopyState<T>(InsertOrUpdateProvider<T> upsert) where T : class
|
||
{
|
||
if (upsert._source.Any() != true) return null;
|
||
var _table = upsert._table;
|
||
var _commonUtils = upsert._commonUtils;
|
||
var updateTableName = upsert._tableRule?.Invoke(_table.DbName) ?? _table.DbName;
|
||
var tempTableName = $"temp_{Guid.NewGuid().ToString("N")}";
|
||
if (upsert._orm.CodeFirst.IsSyncStructureToLower) tempTableName = tempTableName.ToLower();
|
||
if (upsert._orm.CodeFirst.IsSyncStructureToUpper) tempTableName = tempTableName.ToUpper();
|
||
if (upsert._connection == null && upsert._orm.Ado.TransactionCurrentThread != null)
|
||
upsert.WithTransaction(upsert._orm.Ado.TransactionCurrentThread);
|
||
var sb = new StringBuilder().Append("CREATE TEMP TABLE ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" ( ");
|
||
foreach (var col in _table.Columns.Values)
|
||
{
|
||
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" ").Append(col.Attribute.DbType.Replace("NOT NULL", ""));
|
||
sb.Append(",");
|
||
}
|
||
var sql1 = sb.Remove(sb.Length - 1, 1).Append("\r\n) WITH (OIDS=FALSE);").ToString();
|
||
sb.Clear();
|
||
try
|
||
{
|
||
upsert._sourceSql = $"select * from {tempTableName}";
|
||
var sql2 = upsert.ToSql();
|
||
var sql3 = $"DROP TABLE {_commonUtils.QuoteSqlName(tempTableName)}";
|
||
return NativeTuple.Create(sql1, sql2, sql3, tempTableName, _table.Columns.Values.Select(a => a.Attribute.Name).ToArray());
|
||
}
|
||
finally
|
||
{
|
||
upsert._sourceSql = null;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 批量更新（更新字段数量超过 2000 时收益大）<para></para>
|
||
/// 实现原理：使用 Copy 插入临时表，再使用 UPDATE INNER JOIN 联表更新
|
||
/// </summary>
|
||
/// <typeparam name="T"></typeparam>
|
||
/// <param name="that"></param>
|
||
/// <returns></returns>
|
||
public static int ExecuteKdbCopy<T>(this IUpdate<T> that) where T : class
|
||
{
|
||
var update = that as UpdateProvider<T>;
|
||
if (update._source.Any() != true || update._tempPrimarys.Any() == false) return 0;
|
||
var state = ExecuteKdbCopyState(update);
|
||
return UpdateProvider.ExecuteBulkUpdate(update, state, insert => insert.ExecuteKdbCopy());
|
||
}
|
||
static NativeTuple<string, string, string, string, string[]> ExecuteKdbCopyState<T>(UpdateProvider<T> update) where T : class
|
||
{
|
||
if (update._source.Any() != true) return null;
|
||
var _table = update._table;
|
||
var _commonUtils = update._commonUtils;
|
||
var updateTableName = update._tableRule?.Invoke(_table.DbName) ?? _table.DbName;
|
||
var tempTableName = $"temp_{Guid.NewGuid().ToString("N")}";
|
||
if (update._orm.CodeFirst.IsSyncStructureToLower) tempTableName = tempTableName.ToLower();
|
||
if (update._orm.CodeFirst.IsSyncStructureToUpper) tempTableName = tempTableName.ToUpper();
|
||
if (update._connection == null && update._orm.Ado.TransactionCurrentThread != null)
|
||
update.WithTransaction(update._orm.Ado.TransactionCurrentThread);
|
||
var sb = new StringBuilder().Append("CREATE TEMP TABLE ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" ( ");
|
||
var setColumns = new List<string>();
|
||
var pkColumns = new List<string>();
|
||
foreach (var col in _table.Columns.Values)
|
||
{
|
||
if (update._tempPrimarys.Any(a => a.CsName == col.CsName)) pkColumns.Add(col.Attribute.Name);
|
||
else if (col.Attribute.IsIdentity == false && col.Attribute.IsVersion == false && update._ignore.ContainsKey(col.Attribute.Name) == false) setColumns.Add(col.Attribute.Name);
|
||
else continue;
|
||
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" ").Append(col.Attribute.DbType.Replace("NOT NULL", ""));
|
||
sb.Append(",");
|
||
}
|
||
var sql1 = sb.Remove(sb.Length - 1, 1).Append("\r\n) WITH (OIDS=FALSE);").ToString();
|
||
|
||
sb.Clear().Append("UPDATE ").Append(_commonUtils.QuoteSqlName(updateTableName)).Append(" a ")
|
||
.Append("\r\nSET \r\n ").Append(string.Join(", \r\n ", setColumns.Select(col => $"{_commonUtils.QuoteSqlName(col)} = b.{_commonUtils.QuoteSqlName(col)}")))
|
||
.Append("\r\nFROM ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" b ")
|
||
.Append("\r\nWHERE ").Append(string.Join(" AND ", pkColumns.Select(col => $"a.{_commonUtils.QuoteSqlName(col)} = b.{_commonUtils.QuoteSqlName(col)}")));
|
||
var sql2 = sb.ToString();
|
||
sb.Clear();
|
||
var sql3 = $"DROP TABLE {_commonUtils.QuoteSqlName(tempTableName)}";
|
||
return NativeTuple.Create(sql1, sql2, sql3, tempTableName, pkColumns.Concat(setColumns).ToArray());
|
||
}
|
||
|
||
/// <summary>
|
||
/// KingbaseES COPY 批量导入功能，封装了 KdbndpConnection.BeginBinaryImport 方法<para></para>
|
||
/// 使用 IgnoreColumns/InsertColumns 设置忽略/指定导入的列<para></para>
|
||
/// 使用 WithConnection/WithTransaction 传入连接/事务对象<para></para>
|
||
/// 提示：若本方法不能满足，请使用 IInsert<T>.ToDataTable 方法得到 DataTable 对象后，自行处理。<para></para>
|
||
/// COPY 与 insert into t values(..),(..),(..) 性能测试参考：<para></para>
|
||
/// 插入180000行，52列：10,090ms 与 46,756ms，10列：4,081ms 与 9,786ms<para></para>
|
||
/// 插入10000行，52列：583ms 与 3,294ms，10列：167ms 与 568ms<para></para>
|
||
/// 插入5000行，52列：337ms 与 2,269ms，10列：93ms 与 366ms<para></para>
|
||
/// 插入2000行，52列：136ms 与 1,019ms，10列：39ms 与 157ms<para></para>
|
||
/// 插入1000行，52列：88ms 与 374ms，10列：21ms 与 102ms<para></para>
|
||
/// 插入500行，52列：61ms 与 209ms，10列：12ms 与 34ms<para></para>
|
||
/// 插入100行，52列：30ms 与 51ms，10列：4ms 与 9ms<para></para>
|
||
/// 插入50行，52列：25ms 与 37ms，10列：2ms 与 6ms<para></para>
|
||
/// </summary>
|
||
/// <typeparam name="T"></typeparam>
|
||
/// <param name="that"></param>
|
||
public static void ExecuteKdbCopy<T>(this IInsert<T> that) where T : class
|
||
{
|
||
var insert = that as FreeSql.KingbaseES.KingbaseESInsert<T>;
|
||
if (insert == null) throw new Exception(CoreStrings.S_Features_Unique("ExecuteKdbCopy", "KingbaseES"));
|
||
|
||
var dt = that.ToDataTable();
|
||
if (dt.Rows.Count == 0) return;
|
||
|
||
Action<KdbndpConnection> binaryImport = conn =>
|
||
{
|
||
var copyFromCommand = new StringBuilder().Append("COPY ").Append(insert.InternalCommonUtils.QuoteSqlName(dt.TableName)).Append("(");
|
||
var colIndex = 0;
|
||
foreach (DataColumn col in dt.Columns)
|
||
{
|
||
if (colIndex++ > 0) copyFromCommand.Append(", ");
|
||
copyFromCommand.Append(insert.InternalCommonUtils.QuoteSqlName(col.ColumnName));
|
||
}
|
||
copyFromCommand.Append(") FROM STDIN BINARY");
|
||
using (var writer = conn.BeginBinaryImport(copyFromCommand.ToString()))
|
||
{
|
||
foreach (DataRow item in dt.Rows)
|
||
writer.WriteRow(item.ItemArray);
|
||
writer.Complete();
|
||
}
|
||
copyFromCommand.Clear();
|
||
};
|
||
|
||
try
|
||
{
|
||
if (insert.InternalConnection == null && insert.InternalTransaction == null)
|
||
{
|
||
using (var conn = insert.InternalOrm.Ado.MasterPool.Get())
|
||
{
|
||
binaryImport(conn.Value as KdbndpConnection);
|
||
}
|
||
}
|
||
else if (insert.InternalTransaction != null)
|
||
{
|
||
binaryImport(insert.InternalTransaction.Connection as KdbndpConnection);
|
||
}
|
||
else if (insert.InternalConnection != null)
|
||
{
|
||
var conn = insert.InternalConnection as KdbndpConnection;
|
||
var isNotOpen = false;
|
||
if (conn.State != System.Data.ConnectionState.Open)
|
||
{
|
||
isNotOpen = true;
|
||
conn.Open();
|
||
}
|
||
try
|
||
{
|
||
binaryImport(conn);
|
||
}
|
||
finally
|
||
{
|
||
if (isNotOpen)
|
||
conn.Close();
|
||
}
|
||
}
|
||
else
|
||
{
|
||
throw new NotImplementedException($"ExecuteKdbCopy {CoreStrings.S_Not_Implemented_FeedBack}");
|
||
}
|
||
}
|
||
finally
|
||
{
|
||
dt.Clear();
|
||
}
|
||
}
|
||
#endregion
|
||
}
|