Method with_param_values

datafusion/core/src/dataframe/mod.rs:2367–2374

Replace all parameters in logical plan with the specified values, in preparation for execution. # Example ``` use datafusion::prelude::*; # use datafusion::{error::Result, assert_batches_eq}; # #[tokio::main] # async fn main() -> Result<()> { # use datafusion_common::ScalarValue; let ctx = SessionContext::new(); # ctx.register_csv("example", "tests/data/example.csv", CsvReadOptions::new()).await

(self, query_values: impl Into<ParamValues>)

    /// # }
    /// ```
    pub fn with_param_values(self, query_values: impl Into<ParamValues>) -> Result<Self> {
        let plan = self.plan.with_param_values(query_values)?;
        Ok(DataFrame {
            session_state: self.session_state,
            plan,
            projection_requires_validation: self.projection_requires_validation,
        })
    }

    /// Cache DataFrame as a memory table.
    ///