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How to Avoid \'unsupported type []int\' Errors When Using SQLx in Go?

Barbara Streisand
Barbara StreisandOriginal
2024-12-06 06:58:14755browse

How to Avoid

How to Implement SQL Queries Using the SQLx Library in Go

When working with SQL queries in a slice, you might encounter errors such as "converting Exec argument #0's type: unsupported type []int, a slice." To address this, you can utilize the In() helper function provided by the sqlx library.

The syntax for In() is as follows:

query, args, err := sqlx.In(query, args)

where query is the original query string and args is the slice of values to be interpolated into the query.

To use In(), follow these steps:

  1. Prepare the query by passing the slice to the In() function:

    query, args, err := sqlx.In("SELECT * FROM quote WHERE qid IN (?)", qids)
  2. Rebind the query for your specific database backend:

    query = database.SQL.Rebind(query)
  3. Execute the query:

    err = database.SQL.Select(&quotes, query, args...)

Alternatively, you can combine the preparation and execution steps into one line:

err = database.SQL.Select(&quotes, database.SQL.Rebind(query), args...)

For additional examples and documentation, refer to the sqlx library documentation at http://jmoiron.github.io/sqlx/.

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