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db.Fastest PgSql

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sunkaixuna 2021-11-20 22:57:20 +08:00
parent bd5ec286e3
commit 30b980d7b4
2 changed files with 47 additions and 26 deletions
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1
Src/Asp.Net/PgSqlTest/Program.cs
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@ -8,6 +8,7 @@ namespace OrmTest
{ {
//Demo //Demo
Demo0_SqlSugarClient.Init(); Demo0_SqlSugarClient.Init();
DemoO_Fastest.Init();
Demo1_Queryable.Init(); Demo1_Queryable.Init();
Demo2_Updateable.Init(); Demo2_Updateable.Init();
Demo3_Insertable.Init(); Demo3_Insertable.Init();

72
Src/Asp.Net/SqlSugar/Realization/PostgreSQL/SqlBuilder/PostgreSQLFastBuilder.cs
View File

@ -58,52 +58,64 @@ namespace SqlSugar
return await Task.FromResult(dt.Rows.Count); return await Task.FromResult(dt.Rows.Count);
} }
private static void BulkCopy(DataTable dt, string copyString, NpgsqlConnection conn, List<DbColumnInfo> columns) private void BulkCopy(DataTable dt, string copyString, NpgsqlConnection conn, List<DbColumnInfo> columns)
{ {
if (conn.State == ConnectionState.Closed) if (conn.State == ConnectionState.Closed)
conn.Open(); conn.Open();
List<ColumnView> columnViews = new List<ColumnView>();
foreach (DataColumn item in dt.Columns)
{
ColumnView result = new ColumnView();
result.DbColumnInfo = columns.FirstOrDefault(it => it.DbColumnName.EqualCase(item.ColumnName));
result.DataColumn = item;
result.EntityColumnInfo=this.entityInfo.Columns.FirstOrDefault(it => it.DbColumnName.EqualCase(item.ColumnName));
var key = result.DbColumnInfo?.DataType?.ToLower();
if (result.DbColumnInfo == null)
{
result.Type = null;
}
else if (PgSqlType.ContainsKey(key))
{
result.Type = PgSqlType[key];
}
else if (key?.First() == '_')
{
var type = PgSqlType[key.Substring(1)];
result.Type = NpgsqlDbType.Array | type;
}
else
{
result.Type = null;
}
columnViews.Add(result);
}
using (var writer = conn.BeginBinaryImport(copyString)) using (var writer = conn.BeginBinaryImport(copyString))
{ {
foreach (DataRow row in dt.Rows) foreach (DataRow row in dt.Rows)
{ {
writer.StartRow(); writer.StartRow();
foreach (DataColumn kvp in dt.Columns) foreach (var column in columnViews)
{ {
var first = columns.FirstOrDefault(it => it.DbColumnName.EqualCase(kvp.ColumnName)); var value = row[column.DataColumn.ColumnName];
var key = first.DataType.ToLower(); if (value == null)
if (PgSqlType.ContainsKey(key))
{ {
WriterRow(writer, row, first); value = DBNull.Value;
} }
else if (first.DataType.First() == '_') if (column.Type == null)
{ {
var type = PgSqlType[key.Substring(1)]; writer.Write(value);
writer.Write(row[kvp.ColumnName], NpgsqlDbType.Array | type);
} }
else else
{ {
writer.Write(row[kvp.ColumnName]); writer.Write(value, column.Type.Value);
} }
} }
} }
writer.Complete(); writer.Complete();
} }
} }
private static void WriterRow(NpgsqlBinaryImporter writer, DataRow row, DbColumnInfo colInfo)
{
if (PgSqlType.ContainsKey(colInfo.DataType.ToLower()))
{
if (row[colInfo.DbColumnName] == null || row[colInfo.DbColumnName] == DBNull.Value)
{
writer.Write(DBNull.Value, NpgsqlDbType.Integer);
}
else
{
writer.Write(row[colInfo.DbColumnName], PgSqlType[colInfo.DataType.ToLower()]);
}
}
}
public override async Task<int> UpdateByTempAsync(string tableName, string tempName, string[] updateColumns, string[] whereColumns) public override async Task<int> UpdateByTempAsync(string tableName, string tempName, string[] updateColumns, string[] whereColumns)
{ {
var sqlquerybulder= this.Context.Queryable<object>().SqlBuilder; var sqlquerybulder= this.Context.Queryable<object>().SqlBuilder;
@ -119,5 +131,13 @@ namespace SqlSugar
await this.Context.Queryable<T>().Where(it => false).AS(dt.TableName).Select(" * into temp mytemptable").ToListAsync(); await this.Context.Queryable<T>().Where(it => false).AS(dt.TableName).Select(" * into temp mytemptable").ToListAsync();
dt.TableName = "mytemptable"; dt.TableName = "mytemptable";
} }
public class ColumnView
{
public DataColumn DataColumn { get; set; }
public EntityColumnInfo EntityColumnInfo { get; set; }
public DbColumnInfo DbColumnInfo { get; set; }
public NpgsqlDbType? Type { get; set; }
}
} }
} }