/// <summary>
/// 批量更新记录(无事务)
/// </summary>
public static int UpdateNoTrans <T, TK>(this IEnumerable <Table2 <T, TK> > tables, Func <T, string> condition)
{
if (tables == null)
{
return(-1);
}
var updateTabs = tables.Where(a => a.__EditColumns.Count > 0).ToArray();
if (updateTabs.Length == 0)
{
return(0);
}
var sqls = new List <KeyValuePair <string, List <DbParameter> > >();
var sb = new StringBuilder();
var paraIndex = 0;
var parameters = new List <DbParameter>();
foreach (var table in updateTabs)
{
if (table.__EditColumns.Count > 0)
{
sb.Append("\nupdate ").Append(table.TableName).Append(" set ");
foreach (var column in table.__EditColumns)
{
sb.Append("[").Append(column.Key).Append("]=@p").Append(parameters.Count.ToString()).Append(",");
parameters.Add(DbBase2 <TK> .CreateDbParameter("@p" + parameters.Count, column.Value));
paraIndex += 2;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(" where ").Append(condition((T)(object)table));
if (paraIndex > 1500)
{
sqls.Add(new KeyValuePair <string, List <DbParameter> >(sb.ToString(), parameters));
sb = new StringBuilder();
paraIndex = 0;
parameters = new List <DbParameter>();
}
}
}
if (sb.Length > 0)
{
sqls.Add(new KeyValuePair <string, List <DbParameter> >(sb.ToString(), parameters));
}
using (var conn = DbBase2 <TK> .GetConnection(false))
{
foreach (var sql in sqls)
{
var cmd = Sql2.CreateDbCommand(sql.Key, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddRange(sql.Value.ToArray());
cmd.ExecuteNonQuery();
}
}
return(updateTabs.Length);
}
public static int InsertOrUpdate <T, TK>(this Table2 <T, TK> table, string condition)
{
if (table == null)
{
return(-1);
}
if (table.__EditColumns.Count == 0)
{
return(0);
}
var tableName = table.TableName;
var paraIndex = 0;
var sb = new StringBuilder();
var parameters = new List <DbParameter>();
sb.Append("if not exists (select 1 from ").Append(tableName).Append(" where ").Append(condition).Append(")\n");
sb.Append("insert into ").Append(tableName).Append(" (");
foreach (var column in table.__EditColumns)
{
sb.Append("[").Append(column.Key).Append("],");
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")values(");
var update = new StringBuilder();
foreach (var column in table.__EditColumns)
{
sb.Append("@p").Append(paraIndex).Append(",");
update.Append("[").Append(column.Key).Append("]=@p").Append(paraIndex).Append(",");
parameters.Add(DbBase2 <TK> .CreateDbParameter("@p" + paraIndex, column.Value));
paraIndex++;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")\n");
sb.Append("else update ").Append(tableName).Append(" set ");
sb.Append(update);
sb.Remove(sb.Length - 1, 1);
sb.Append(" where ").Append(condition).Append("\n");
return(DbBase2 <TK> .ExecuteNonQuery(sb.ToString(), parameters.ToArray()));
}
/// <summary>
/// 更新记录(注意条件，否则批量更新导致无法挽回的错误)
/// </summary>
public static int UpdateSetNoTrans <T, TK>(this Table2 <T, TK> table, string condition, SqlConnection conn, string set = "")
{
if (table == null)
{
return(-1);
}
if (table.__EditColumns.Count == 0)
{
throw new Exception("更新字段数至少1个以上");
}
var sql = new StringBuilder();
var parameters = new List <DbParameter>();
sql.Append("update ").Append(table.TableName).Append(" set ");
foreach (var column in table.__EditColumns)
{
sql.Append("[").Append(column.Key).Append("]=@p").Append(parameters.Count.ToString()).Append(",");
parameters.Add(DbBase2 <TK> .CreateDbParameter("@p" + parameters.Count, column.Value));
}
if (set.HasValue())
{
sql.Append(set);
}
else
{
sql.Remove(sql.Length - 1, 1);
}
sql.Append(" where ").Append(condition);
var cmd = Sql2.CreateDbCommand(sql.ToString(), conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddRange(parameters.ToArray());
var result = cmd.ExecuteNonQuery();
return(result);
}
public static int InsertOrUpdate <T, TK>(this IEnumerable <Table2 <T, TK> > tables, Func <T, string> condition)
{
if (tables == null)
{
return(-1);
}
var updateTabs = tables.Where(a => a.__EditColumns.Count > 0).ToArray();
if (updateTabs.Length == 0)
{
return(0);
}
var sw = Stopwatch.StartNew();
var tableName = updateTabs[0].TableName;
var sqls = new List <KeyValuePair <string, List <DbParameter> > >();
try
{
var paraIndex = 0;
var sb = new StringBuilder();
var parameters = new List <DbParameter>();
foreach (var table in updateTabs)
{
var where = condition((T)(object)table);
sb.Append("if not exists (select 1 from ").Append(tableName).Append(" where ").Append(where).Append(")\n");
sb.Append("insert into ").Append(tableName).Append(" (");
foreach (var column in table.__EditColumns)
{
sb.Append("[").Append(column.Key).Append("],");
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")values(");
foreach (var column in table.__EditColumns)
{
sb.Append("@p").Append(paraIndex).Append(",");
parameters.Add(DbBase2 <TK> .CreateDbParameter("@p" + paraIndex, column.Value));
paraIndex++;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(")\n");
sb.Append("else update ").Append(tableName).Append(" set ");
foreach (var column in table.__EditColumns)
{
sb.Append("[").Append(column.Key).Append("]=@p").Append(paraIndex).Append(",");
parameters.Add(DbBase2 <TK> .CreateDbParameter("@p" + paraIndex, column.Value));
paraIndex++;
}
sb.Remove(sb.Length - 1, 1);
sb.Append(" where ").Append(where).Append("\n");
if (paraIndex > 1500)
{
sqls.Add(new KeyValuePair <string, List <DbParameter> >(sb.ToString(), parameters));
sb = new StringBuilder();
paraIndex = 0;
parameters = new List <DbParameter>();
}
}
if (sb.Length > 0)
{
sqls.Add(new KeyValuePair <string, List <DbParameter> >(sb.ToString(), parameters));
}
using (var trans = new TransactionScope(TransactionScopeOption.Required, DbBase2.TransactionOption))
{
using (var conn = DbBase2 <TK> .GetConnection(false))
{
foreach (var sql in sqls)
{
var cmd = Sql2.CreateDbCommand(sql.Key, conn);
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddRange(sql.Value.ToArray());
cmd.ExecuteNonQuery();
}
trans.Complete();
}
}
}
catch (Exception e)
{
Log.Error(e.Message + e.StackTrace + sqls.Join("\n"));
return(-1);
}
finally
{
var useTime = sw.ElapsedMilliseconds;
var logStr = "Table.InsertOrUpdate({0}[{1}]) 执行时间 {2} 毫秒".Formats(tableName, updateTabs.Length, useTime.ToString("F0"));
if (useTime / 1000 > 5)
{
Log.Warn(logStr);
}
Log.Debug(logStr);
}
return(updateTabs.Length);
}