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usage.\n\n## Install\n\nYou can get `sqlrows` by `go get` command.\n\n```bash\n$ go get -u github.com/gostaticanalysis/sqlrows\n```\n\n## QuickStart\n\n`sqlrows` run with `go vet` as below when Go is 1.12 and higher.\n\n```bash\n$ go vet -vettool=$(which sqlrows) github.com/you/sample_api/...\n```\n\nWhen Go is lower than 1.12, just run `sqlrows` command with the package name (import path).\n\nBut it cannot accept some options such as `--tags`.\n\n```bash\n$ sqlrows github.com/you/sample_api/...\n```\n\n## Analyzer\n\n`sqlrows` checks a common mistake when using `*sql.Rows`.\n\nAt first, you must call `rows.Close()` in a defer function. A connection will not be reused if you unexpectedly failed to scan records and forgot to close `*sql.Rows`.\n\n```go\nrows, err := db.QueryContext(ctx, \"SELECT * FROM users\")\nif err != nil {\n    return nil, err\n}\n\nfor rows.Next() {\n\terr = rows.Scan(...)\n\tif err != nil {\n\t\treturn nil, err // NG: this return will not release a connection.\n\t}\n}\n```\n\nAnd, if you defer a function call to close the `*sql.Rows` before checking the error that determines whether the return is valid, it will mean you dually call `rows.Close()`.\n\n```go\nrows, err := db.QueryContext(ctx, \"SELECT * FROM users\")\ndefer rows.Close() // NG: using rows before checking for errors\nif err != nil {\n    return nil, err\n}\n```\n\nIt may cause panic and nil-pointer reference but it won't clearly teach you that is due to them.","funding_links":[],"categories":["Linters"],"sub_categories":["Bugs"],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgostaticanalysis%2Fsqlrows","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgostaticanalysis%2Fsqlrows","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgostaticanalysis%2Fsqlrows/lists"}