tk/FreeSql
1
0
Fork 0
mirror of https://github.com/nsnail/FreeSql.git synced 2025-06-19 04:18:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

- 完善 BulkCopy Update

Browse Source
This commit is contained in:
2881099
2022-12-06 21:57:30 +08:00
parent 768b715e18
commit 09864eaa9f
12 changed files with 269 additions and 136 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
Providers/FreeSql.Provider.SqlServer/SqlServerExtensions.cs
View File

@ -136,46 +136,32 @@ public static partial class FreeSqlSqlServerGlobalExtensions
var state = ExecuteSqlBulkCopyState(update);
return UpdateProvider.ExecuteBulkUpdate(update, state, insert => insert.ExecuteSqlBulkCopy(copyOptions, batchSize, bulkCopyTimeout));
}
static NativeTuple<string, string, string, string> ExecuteSqlBulkCopyState<T>(UpdateProvider<T> update) where T : class
static NativeTuple<string, string, string, string, string[]> ExecuteSqlBulkCopyState<T>(UpdateProvider<T> update) where T : class
{
if (update._source.Any() != true) return null;
var _table = update._table;
var _tempPrimarys = update._tempPrimarys;
var _commonUtils = update._commonUtils;
var _ignore = update._ignore;
var updateTableName = update._tableRule?.Invoke(_table.DbName) ?? _table.DbName;
var tempTableName = $"#Temp_{updateTableName}";
if (update._connection == null)
{
if (update._orm.Ado.TransactionCurrentThread != null)
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 sql1 = $"SELECT * INTO {tempTableName} FROM {_commonUtils.QuoteSqlName(updateTableName)} WHERE 1=2";
var sb = new StringBuilder().Append("UPDATE ").Append(" a SET \r\n ");
var colidx = 0;
var setColumns = new List<string>();
var pkColumns = new List<string>();
foreach (var col in _table.Columns.Values)
{
if (col.Attribute.IsPrimary) continue;
if (_tempPrimarys.Any(a => a.CsName == col.CsName)) continue;
if (col.Attribute.IsIdentity == false && col.Attribute.IsVersion == false && _ignore.ContainsKey(col.Attribute.Name) == false)
{
if (colidx > 0) sb.Append(", \r\n ");
sb.Append(" a.").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ").Append("b.").Append(_commonUtils.QuoteSqlName(col.Attribute.Name));
++colidx;
}
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);
}
var sql1 = $"SELECT {string.Join(", ", pkColumns)}, {string.Join(", ", setColumns)} INTO {tempTableName} FROM {_commonUtils.QuoteSqlName(updateTableName)} WHERE 1=2";
var sb = new StringBuilder().Append("UPDATE ").Append(" a SET \r\n ").Append(string.Join(", \r\n ", setColumns.Select(col => $"a.{_commonUtils.QuoteSqlName(col)} = b.{_commonUtils.QuoteSqlName(col)}")));
sb.Append(" \r\nFROM ").Append(_commonUtils.QuoteSqlName(updateTableName)).Append(" a ")
.Append(" \r\nINNER JOIN ").Append(tempTableName).Append(" b ON ");
for (var a = 0; a < _tempPrimarys.Length; a++)
{
var pkname = _commonUtils.QuoteSqlName(_tempPrimarys[a].Attribute.Name);
if (a > 0) sb.Append(" AND ");
sb.Append("b.").Append(pkname).Append(" = a.").Append(pkname);
}
.Append(" \r\nINNER JOIN ").Append(tempTableName).Append(" b ON ").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 {tempTableName}";
return NativeTuple.Create(sql1, sql2, sql3, tempTableName);
return NativeTuple.Create(sql1, sql2, sql3, tempTableName, pkColumns.Concat(setColumns).ToArray());
}
/// <summary>