package main import ( "gorm.io/gorm" "gorm.io/driver/mysql" ) type Product struct { gorm.Model Code string Price uint } func main() { dsn := "root:123456@tcp(127.0.0.1:3306)/golang_db?charset=utf8mb4&parseTime=True&loc=Local" if err != nil { panic("failed to connect database...
func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error) {if mc.closed.IsSet() {errLog.Print(ErrInvalidConn)return nil, driver.ErrBadConn}if len(args) != 0 {if !mc.cfg.InterpolateParams {return nil, driver.ErrSkip}// try client-side prepare to reduce round...
func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error) { if mc.closed.IsSet() { errLog.Print(ErrInvalidConn) return nil, driver.ErrBadConn } if len(args) != 0 { if !mc.cfg.InterpolateParams { return nil, driver.ErrSkip } // try client-side prepare t...
If a table does not implement RowCount() we used to use 1000 as a default value for row costing. A recent refactor changed that to 0. This fixes information schema tables to report the 1000 value again, which is usually accurate for small databases because of default tables and columns. ...
iferr!=nil{ fmt.Printf("connect db mysql failed: %v\n",err) returnerr } returnnil } funcmain() { /*1.1 连接mysql数据库*/ err:=initDB() iferr!=nil{ fmt.Println(err) return } fmt.Println("mysql数据库连接成功!") ...
if one of the types is a string. This is not a perfect fix as we don't do truncation yet, but it will stop panics. Reused solution from this PR:https://github.com/dolthub/go-mysql-server/pull/2177It fixes the test case in this issue, but a skipped test is added for missing tru...
if err != nil fmt.Println(err) return } fmt.Println("mysql数据库连接成功!") /*1.2 GORM Model定义*/ /*说明: 在使用ORM工具时,通常我们需要在代码中定义模型(Models)与数据库中的数据表进行映射,在GORM中模型(Models)通 常是正常定义的结构体、基本的go类型或它们的指针。同时也支持sql.Scanner及drive...
which means that if a filter condition on the join evaluates to NULL, the corresponding primary row can't be included in the result set. This means that if the primary row has a NULL value used in a filter, we need to know whether or not the secondary table has at least one row. ...
-C CUSTOM-TYPE-PACKAGE Go package name to use for custom or unknown types --int32-type INT32-TYPE, -i INT32-TYPE Go type to assign to integers [default: int] --uint32-type UINT32-TYPE, -u UINT32-TYPE Go type to assign to unsigned integers [default: uint] --ignore-fields IGNORE...
function parameter types, take both iterators by value. * Code-space savings and perhaps some modest performance improvements in * RepeatedPtrField. * Eliminate nullptr check from every tag parse. * Remove unused _$name$cached_byte_size fields. * Serialize extension ranges together when not ...