Documentation

Query SQLite

To query SQLite with Flux:

  1. Import the sql package.

  2. Use sql.from() and provide the following parameters:

    • driverName: sqlite3
    • dataSourceName: See data source name
    • query: SQL query to execute
import "sql"

sql.from(
    driverName: "sqlite3",
    dataSourceName: "file:/path/to/example.db?cache=shared&mode=ro",
    query: "SELECT * FROM example_table",
)

Requires file system access

To query SQLite, Flux must have access to the filesystem. If Flux does not have access to the file system, the query will return an error similar to one of the following:

  • Error: unable to open database file
  • failed to read file: filesystem service is uninitialized
  • An internal error has occurred

If using InfluxDB Cloud or InfluxDB OSS, the Flux process does not have access to the filesystem.


SQLite data source name

The sqlite3 driver uses the following DSN syntax (also known as a connection string):

file:/path/to/example.db?param=value

SQLite to Flux data type conversion

sql.from() converts SQLite data types to Flux data types.

SQLite data typeFlux data type
INT, INTEGER, BIGINT, SMALLINT, TINYINTint
FLOAT, DOUBLEfloat
DATETIME, TIMESTAMP, DATEtime
BOOLint
TEXTstring

All other SQLite data types are converted to strings.


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The future of Flux

Flux is going into maintenance mode. You can continue using it as you currently are without any changes to your code.

Flux is going into maintenance mode and will not be supported in InfluxDB 3.0. This was a decision based on the broad demand for SQL and the continued growth and adoption of InfluxQL. We are continuing to support Flux for users in 1.x and 2.x so you can continue using it with no changes to your code. If you are interested in transitioning to InfluxDB 3.0 and want to future-proof your code, we suggest using InfluxQL.

For information about the future of Flux, see the following: