I executed the insert statement using Go on Docker, and I got the following error.
panic: Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'generated(owner, repository) VALUES( ?, ? )' at line 1
I made the source code by reference to README.md of github.com/go-sql-driver/mysql package GitHub, but I got the error.
I want to share the solution to resolve this problem.
I do not have any idea the reason why the source code I wrote first did not run, so if you know about the reason, I would appreciate it if you could tell me about that.
The Source Code I Wrote for The First Time
I use github.com/go-sql-driver/mysql package to use MySQL.
The references are the official README.md, a sample code, the article Masao wrote (in Japanese), and the MariaDB document.
mDB.go
package mDB
import (
"database/sql"
"log"
_ "github.com/go-sql-driver/mysql"
)
type MDB struct {
Host string
User string
Password string
Database string
}
func (m MDB) Test() {
db, er := sql.Open("mysql", m.User+":"+m.Password+"@"+"tcp("+m.Host+":3306)"+"/"+m.Database)
if er != nil {
log.Fatal(er)
}
defer db.Close()
er = db.Ping()
if er != nil {
panic(er.Error())
}
stmtIns, err := db.Prepare("insert into generated(owner, repository) values( ?, ? )")
if err != nil {
panic(err.Error()) // proper error handling instead of panic in your app
}
defer stmtIns.Close() // Close the statement when we leave main() / the program terminates
stmtIns.Exec("Hacknock", "testdayo")
}
I got the following response when mDB.Test() runs.
panic: Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'generated(owner, repository) values( ?, ? )' at line 1 [recovered]
panic: Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'generated(owner, repository) values( ?, ? )' at line 1
This source code is much the same as the sample code...
The Source Code That Runs Fine
I got the expected result if I modify to the insert statement like the one below, as the result of various trials.
insert into [database name].generated(owner, repository) values( ?, ? )
I specified the database name on sql.Open... Why do I need to specify the database name on the insert statement...?
The following code runs fine.
package mDB
import (
"database/sql"
"log"
_ "github.com/go-sql-driver/mysql"
)
type MDB struct {
Host string
User string
Password string
Database string
}
func (m MDB) Test() {
db, er := sql.Open("mysql", m.User+":"+m.Password+"@"+"tcp("+m.Host+":3306)"+"/"+m.Database)
if er != nil {
log.Fatal(er)
}
defer db.Close()
er = db.Ping()
if er != nil {
panic(er.Error())
}
stmtIns, err := db.Prepare("insert into " + m.Database + ".generated(owner, repository) values( ?, ? )")
if err != nil {
panic(err.Error()) // proper error handling instead of panic in your app
}
defer stmtIns.Close() // Close the statement when we leave main() / the program terminates
stmtIns.Exec("Hacknock", "testdayo")
}
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