When looping over a set of objecrs, a new sql operation is triggered each time. we should bulk insert batch records in one time to reduce db operate time. Just as preload related records between has_many relationship models to avoid n+1 queries. In golang world, gorm is a nice orm fr...
使用批量插入(Bulk Insertion):通过使用SQLite的批量插入功能,可以一次性插入多行数据,而不是单独插入每一行。这通常比逐行插入更快。可以使用SQLite的INSERT INTO ... VALUES (...), (...), (...)语法来实现批量插入。 使用索引(Indexes):如果需要频繁地查询导入的数据,可以考虑在导入之前创建索引。索引可以加...
"database/sql" "fmt" _ "github.com/go-sql-driver/mysql" "log" "time" )func main() { db, err := sql.Open("mysql", "root:root@tcp(192.168.19.50:3306)/test?parseTime=true&charset=utf8&loc=Local") checkErr(err) // after using, release conn ...
对于MySQL数据库,可以使用INSERT ... ON DUPLICATE KEY UPDATE语句或者UPDATE ... CASE ... WHEN ...语句来实现批量更新。以下是一个使用UPDATE ... CASE ... WHEN ...语句的示例代码: go package main import ( "database/sql" "fmt" "log" _ "github.com/go-sql-driver/mysql" ) func main() ...
bulk_insert_buffer_size = 8M myisam_sort_buffer_size = 8M myisam_max_sort_file_size = 10G myisam_repair_threads = 1 interactive_timeout = 28800wait_timeout = 28800[mysqldump] quick max_allowed_packet = 500M [myisamchk] key_buffer_size = 8M sort_buffer_size = 8M read_buffer = 4M...
ORM-like experience using good old SQL. Bun supports structs, map, scalars, and slices of map/structs/scalars. Bulk inserts. Bulk updates using common table expressions. Bulk deletes. Fixtures. Migrations. Soft deletes. Resources Get started Examples Discussions Chat Reference Starter kit Tutorials...
使用GORM(推荐) 使用go-sql-driver/mysql 当前开源比较流行的 Golang ORM 为 GORM,此处将以 v1.23.5 版本进行说明。 封装一个用于适配 TiDB 事务的工具包 util,编写以下代码备用: package util import ( "gorm.io/gorm" ) // TiDBGormBegin start a TiDB and Gorm transaction as a block. If no error...
由于用户画像存在MongoDB,因此在引擎里需要连接Mongo,而在高并发的场景下,MongoDB的连接IO成为了瓶颈。虽然只是一次连接,峰值QPS就从3K降到了500……显然,在进程级别上建立一个连接池,达到会话的多请求复用是个基本的需求。 我在工程里用的库是mgo,最简单的代码实例如下: ...
Database client/clients: mailru/go-clickhouse (uses the HTTP protocol) uptrace/go-clickhouse (uses the native TCP protocol with database/sql-like API) Drivers with columnar interface: vahid-sohrabloo/chconn Insert collectors: KittenHouse nikepan/clickhouse-bulk...
SqlBulkCopy 批量插入 public void BulkData(string TableName, DataTable dt) { using (SqlConnection con ... sql html 服务器 转载 mob604756fa96d7 2018-08-26 21:47:00 179阅读 2评论 MyBatis批量插入 普通for循环 @Test public void testInsertBatch2() throws Exception { long start = Sys...