英文:
How do I construct a sql in GO MYSQL with many similar parameters?
问题
我目前正在使用GO MySQL，我遇到了一个情况，其中SQL包含许多相似的参数。
stmt, err := db.Prepare( SELECT id FROM questions WHERE description like '%?%' UNION SELECT id FROM books WHERE description like '%?%' UNION SELECT id FROM sites WHERE description like '%?%')
param := "golang"
stmt.Query(param, param, param)
我的实际SQL中有大约10个类似的golang参数和一个重复出现几次的第二个参数。位置参数是构建SQL的唯一方法吗？
英文:
I am currently using GO MySQL and I have a case where the sql contains many similar parameter.
stmt, err := db.Prepare(`
SELECT id
FROM questions
WHERE description like '%?%'
UNION
SELECT id
FROM books
WHERE description like '%?%'
UNION
SELECT id
FROM sites
WHERE description like '%?%'`)
param := "golang"
stmt.Query(param, param, param)
My real life sql has about 10 similar parameters of golang and a 2nd parameter that repeats itself a few times. Is the positional parameter the only way to construct the sql?
答案1
得分: 0
你可以使用扩展运算符：
args := make([]string, 0)
for i := 0; i < 10; i++ {
args = append(args, "param")
}
q.Query(args...)
代码行数增加了，但至少你不必一直按Ctrl+C/Ctrl+V。
英文:
You can use the spread operator:
args := make([]string, 0)
for i := 0; i < 10; i++ {
args = append(args, "param")
}
q.Query(args...)
More lines of code, but at least you don't have to Ctrl+C/Ctrl+V all the time.
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