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main.go
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main.go
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package main
import (
"database/sql"
"fmt"
_ "github.com/sijms/go-ora/v2"
"os"
"time"
)
func createTable(conn *sql.DB) error {
t := time.Now()
sqlText := `CREATE TABLE TEMP_TABLE_321(
ID varchar2(100),
RESPONSE CLOB
)`
_, err := conn.Exec(sqlText)
if err != nil {
return err
}
fmt.Println("Finish create table: ", time.Now().Sub(t))
return nil
}
func dropTable(conn *sql.DB) error {
t := time.Now()
_, err := conn.Exec("drop table TEMP_TABLE_321 purge")
if err != nil {
return err
}
fmt.Println("Finish drop table: ", time.Now().Sub(t))
return nil
}
func insertData(conn *sql.Tx) error {
t := time.Now()
_, err := conn.Exec("INSERT INTO TEMP_TABLE_321(ID, RESPONSE) VALUES('1', 'THIS IS A TEST')")
if err != nil {
return err
}
fmt.Println("Finish insert one row: ", time.Now().Sub(t))
return nil
}
func main() {
conn, err := sql.Open("oracle", os.Getenv("DSN"))
if err != nil {
fmt.Println("Can't connect: ", err)
return
}
defer func() {
err = conn.Close()
if err != nil {
fmt.Println("can't close connection: ", err)
}
}()
//err = createTable(conn)
//if err != nil {
// fmt.Println("can't create table: ", err)
// return
//}
//defer func() {
// err = dropTable(conn)
// if err != nil {
// fmt.Println("can't drop table: ", err)
// }
//}()
tx, err := conn.Begin()
if err != nil {
fmt.Println("can't begin transaction: ", err)
return
}
err = insertData(tx)
if err != nil {
fmt.Println("can't insert data: ", err)
err = tx.Rollback()
if err != nil {
fmt.Println("can't rollback: ", err)
}
return
}
}