https://github.com/solidsnack/rust-postgres-named-parameters

https://github.com/solidsnack/rust-postgres-named-parameters

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/solidsnack/rust-postgres-named-parameters
• Owner: solidsnack
• Created: 2017-04-08T21:26:51.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2017-06-11T06:08:00.000Z (about 9 years ago)
• Last Synced: 2025-12-25T13:45:54.653Z (6 months ago)
• Language: Rust
• Size: 26.4 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Named Parameters For `postgres` Queries

This crate provides for named parameters for [`postgres`] queries.

[`postgres`]: https://docs.rs/postgres

```rust

#[macro_use]

extern crate postgres_named_parameters;

use chrono::Duration;

use chrono::prelude::UTC;

let now = UTC.now();

let q = query!("SELECT * FROM log WHERE t BETWEEN {lo} AND {hi}",

               lo = now - Duration.minutes(6),

               hi = now - Duration.minutes(1));

conn.execute(q.text(), q.parameters());

```

## Parameters & Idenitifers

* Use `{...}` for parameters:

```sql

SELECT * FROM log WHERE t BETWEEN {lo} AND {hi}

```

* Use `{&...}` for variables that will be treated as identifiers, which is to

  say, as the names of columns, types or tables:

```sql

INSERT INTO {&current_partition} VALUES (now(), {tag}, {location})

```