Enum StringAggSyntax 

pub enum StringAggSyntax {
    Argument(&'static str),
    SeparatorKeyword {
        func: &'static str,
        backslash_escapes: bool,
    },
}

Where a string_agg separator goes, and so whether it is a value or text. Two dialects take it as an ordinary argument, where it binds like any other value. MySQL’s grammar takes a literal after a keyword and rejects a parameter there, which is the only reason this crate ever writes a value into SQL instead of handing it to the driver.

Variants

Argument(&'static str)

string_agg(x, $1) / group_concat(x, ?).

SeparatorKeyword

group_concat(x SEPARATOR '...'), the separator written out and escaped. backslash_escapes says how: MySQL reads a backslash inside a literal as an escape, so a lone one would carry the closing quote away and has to be doubled. A session running NO_BACKSLASH_ESCAPES reads the doubled pair as two backslashes, which is not the separator asked for. The doubled pair is still no way out of the literal, since a doubled quote escapes under either mode.

Fields

func: &'static str

backslash_escapes: bool

Trait Implementations

impl Clone for StringAggSyntax

fn clone(&self) -> StringAggSyntax

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for StringAggSyntax

impl Debug for StringAggSyntax

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

Formats the value using the given formatter.