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fetch_scalar

kitx::mysql::query

Function fetch_scalar 

Source 
pub async fn fetch_scalar<'a>(
    builder: QueryBuilder<'a, MySql>,
) -> Result<i64, Error>
Expand description

Fetch a scalar value (typically a count or id)

§Arguments

  • builder - QueryBuilder containing the query to execute

§Returns

u64 scalar value on success or an Error

获取标量值（通常是计数或ID）

§参数

  • builder - 包含要执行查询的 QueryBuilder

§返回值

成功时返回 u64 标量值，失败时返回 Error