Documentation

Write to MySQL

To write data to MySQL with Flux:

  1. Import the sql package.

  2. Pipe-forward data into sql.to() and provide the following parameters:

    • driverName: mysql
    • dataSourceName: See data source name
    • table: Table to write to
    • batchSize: Number of parameters or columns that can be queued within each call to Exec (default is 10000)
import "sql"

data
  |> sql.to(
    driverName: "mysql",
    dataSourceName: "user:password@tcp(localhost:3306)/db",
    table: "example_table"
  )

MySQL data source name

The mysql driver uses the following data source name (DSN) syntax (also known as a connection string):

username:password@tcp(localhost:3306)/dbname?param=value

Flux to MySQL data type conversion

sql.to() converts Flux data types to MySQL data types.

Flux data typeMySQL data type
floatFLOAT
intBIGINT
uintBIGINT
stringTEXT(16383)
boolBOOL (TINYINT)
timeDATETIME

MySQL BOOL types

BOOL is a synonym supplied by MySQL for convenience. MySQL stores BOOL values as TINYINT types so looking at the schema shows the column type as TINYINT.


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