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substring

dbkit_core::func

Function substring 

Source 
pub fn substring<T>(
    arg: impl IntoExpr<T>,
    start: impl IntoExpr<i32>,
    count: impl IntoExpr<i32>,
) -> Expr<<T as StringUnaryExpr>::Output>
where
    T: StringUnaryExpr,
Expand description

Returns up to count characters from the 1-based start. From "abcdef", (2, 3) yields "bcd" and (0, 3) yields "ab"; negative counts are rejected. Maps to PostgreSQL SUBSTRING.