Sqlvet

Sqlvet performs static analysis on raw SQL queries in your Go code base to surface potential runtime errors at build time.

Feature highlights:

Check for SQL syntax error
Identify unsafe queries that could potentially lead to SQL injections
For INSERT statements, make sure column count matches value count
Validate table names
Validate column names

TODO:

Validate query function argument count and types
Support MySQL syntax
Type check value list in UPDATE query
Trace wrapper function call

Usage

Installation

Go less than 1.18:

$ go get github.com/houqp/sqlvet

Go greater or equal 1.18:

$ go install github.com/houqp/sqlvet@latest

Zero conf

SqlVet should work out of the box for any Go project using go modules:

$ sqlvet .
[!] No schema specified, will run without table and column validation.
Checked 10 SQL queries.
🎉 Everything is awesome!

Note: unreachable code will be skipped.

Schema validation

To enable more in-depth analysis, create a sqlvet.toml config file at the root of your project and specify the path to a database schema file:

$ cat ./sqlvet.toml
schema_path = "schema/full_schema.sql"

$ sqlvet .
Loaded DB schema from schema/full_schema.sql
        table alembic_version with 1 columns
        table incident with 13 columns
        table usr with 4 columns
Exec @ ./pkg/incident.go:75:19
        UPDATE incident SET oops = $1 WHERE id = $2

        ERROR: column `oops` is not defined in table `incident`

Checked 10 SQL queries.
Identified 1 errors.

Customer query functions and libraries

By default, sqlvet checks all calls to query function in database/sql, github.com/jmoiron/sqlx, github.com/jinzhu/gorm and go-gorp/gorp libraries. You can however configure it to white-list arbitrary query functions like below:

[[sqlfunc_matchers]]
  pkg_path = "github.com/mattermost/gorp"
  [[sqlfunc_matchers.rules]]
    query_arg_name = "query"
    query_arg_pos  = 0
  [[sqlfunc_matchers.rules]]
    query_arg_name = "sql"
    query_arg_pos  = 0

The above config tells sqlvet to analyze any function/method from github.com/mattermost/gorp package that has the first parameter named either query or sql.

You can also match query functions by names:

[[sqlfunc_matchers]]
  pkg_path = "github.com/jmoiron/sqlx"
  [[sqlfunc_matchers.rules]]
    func_name = "NamedExecContext"
    query_arg_pos  = 1

The above config tells sqlvet to analyze the second parameter of any function/method named NamedExecContext in github.com/jmoiron/sqlx package.

Ignore false positives

To skip a false positive, annotate the relevant line with sqlvet: ignore comment:

func foo() {
    Db.Query(fmt.Sprintf("SELECT %s", "1")) // sqlvet: ignore
}

Acknowledgements

Sqlvet was inspired by safesql and sqlc.