How Can I Execute Multiple SQL Statements in a Single String Using the Go MySQL Driver?

Multiple SQL Statements in a Single String with Go MySQL Drivers

When working with SQL databases in Go, developers often encounter the need to execute multiple SQL statements within a single call. This can be useful for creating or modifying databases, applying data dumps, and other administrative tasks.

The popular Go-MySQL-Driver, widely used for connecting to MySQL databases, initially faced a limitation in supporting multiple statements in one query. However, this has since been addressed with the introduction of the multiStatements connection parameter.

To enable support for multiple statements, simply add multiStatements=true to the connection string when creating a new database connection:

db, err := sql.Open("mysql", "user:password@(127.0.0.1:3306)/?multiStatements=true")

Once you have enabled the multiStatements parameter, you can now execute multiple SQL statements separated by semicolons (';') in a single query:

sql := `DROP SCHEMA IF EXISTS foo; CREATE SCHEMA IF NOT EXISTS foo;`
_, err = db.Exec(sql)

This will execute both the DROP SCHEMA and CREATE SCHEMA statements in one go, without encountering any syntax errors that would occur with a standard query.

Remember, using multiple statements in a single query should be done cautiously, as it can lead to unexpected behavior if the statements interact with each other. It is generally preferred to execute each statement individually for better control and readability.

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