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use repr::{Datum, DatumList};
use crate::EvalError;
sqlfunc!(
#[sqlname = "isnull"]
fn is_null<'a>(a: Datum<'a>) -> bool {
a.is_null()
}
);
sqlfunc!(
#[sqlname = "istrue"]
fn is_true<'a>(a: Datum<'a>) -> bool {
a == Datum::True
}
);
sqlfunc!(
#[sqlname = "isfalse"]
fn is_false<'a>(a: Datum<'a>) -> bool {
a == Datum::False
}
);
sqlfunc!(
fn pg_column_size<'a>(a: Datum<'a>) -> Result<Option<i32>, EvalError> {
match a {
Datum::Null => Ok(None),
datum => {
let sz = repr::datum_size(&datum);
i32::try_from(sz)
.map(Some)
.or(Err(EvalError::Int32OutOfRange))
}
}
}
);
sqlfunc!(
fn mz_row_size<'a>(a: DatumList<'a>) -> Result<i32, EvalError> {
let sz = repr::row_size(a.iter());
i32::try_from(sz).or(Err(EvalError::Int32OutOfRange))
}
);