Struct Script 

pub struct Script {
    pub statements: Vec<(Node, String)>,
    /* private fields */
}

The statements of the body of a function in SQL that Body::Statements runs, which fmgr_sql analyzes and runs one after the other, as prepare_next_query and init_execution_state do. A statement can see the changes of the statements before it.

Fields

statements: Vec<(Node, String)>

Each statement, with its text.

Implementations

impl Script

pub fn name(&self) -> &str

The name of the function.

pub fn src(&self) -> &str

The body in a string, or an empty text for a body in BEGIN ATOMIC.

pub fn read_only(&self) -> bool

True for a function that is not volatile, which can run only statements that do not write, as readonly_func of SQLFunctionHashEntry is.

pub fn planned(&self, i: usize) -> bool

True when the statement i has a plan. The other statements run as utility statements.

pub fn analyze( &self, env: &dyn Env, inputs: &[u32], i: usize, ) -> Result<Option<Query>>

prepare_next_query: the query of the statement i for a call with arguments of the types inputs. The last statement gives the result of the function, as check_sql_fn_retval checks it. None for a statement with no plan.

Errors

The errors of the analysis of the statement, and 42P13 for a last statement that does not give the result of the function.

Trait Implementations

impl Debug for Script

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.