You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: schema.rs
    path of file: ./repos/readyset/readyset-mysql/src
    
    the code of the file until where you have to start completion: #![warn(clippy::panic)]

use nom_sql::{self, ColumnConstraint, DialectDisplay, Relation};
use readyset_client::ColumnSchema;
use readyset_data::DfType;
use readyset_errors::{unsupported, ReadySetResult};

use crate::constants::DEFAULT_CHARACTER_SET;

pub(crate) fn convert_column(col: &ColumnSchema) -> ReadySetResult<mysql_srv::Column> {
    let mut colflags = mysql_srv::ColumnFlags::empty();
    use mys
    
pub(crate) fn convert_column(col: &ColumnSchema) -> ReadySetResult<mysql_srv::Column> {
    let mut colflags = mysql_srv::ColumnFlags::empty();
    use mysql_srv::ColumnType::*;

    let coltype = match col.column_type {
        DfType::Unknown => MYSQL_TYPE_UNKNOWN,
        DfType::Text(_) => MYSQL_TYPE_BLOB,
        DfType::VarChar(..) => MYSQL_TYPE_VAR_STRING,
        DfType::Int => MYSQL_TYPE_LONG,
        DfType::UnsignedInt => {
            colflags |= mysql_srv::ColumnFlags::UNSIGNED_FLAG;
            MYSQL_TYPE_LONG
        }
        DfType::BigInt => MYSQL_TYPE_LONGLONG,
        DfType::UnsignedBigInt => {
            colflags |= mysql_srv::ColumnFlags::UNSIGNED_FLAG;
            MYSQL_TYPE_LONGLONG
        }
        DfType::TinyInt => MYSQL_TYPE_TINY,
        DfType::UnsignedTinyInt => {
            colflags |= mysql_srv::ColumnFlags::UNSIGNED_FLAG;
            MYSQL_TYPE_TINY
        }
        DfType::SmallInt => MYSQL_TYPE_SHORT,
        DfType::UnsignedSmallInt => {
            colflags |= mysql_srv::ColumnFlags::UNSIGNED_FLAG;
            MYSQL_TYPE_SHORT
        }
        DfType::Bool => MYSQL_TYPE_BIT,
        DfType::DateTime { .. } => MYSQL_TYPE_DATETIME,
        DfType::Blob => MYSQL_TYPE_BLOB,
        DfType::Char(..) => {
            // TODO(aspen): I'm not sure if this is right
            MYSQL_TYPE_STRING
        }
        DfType::Float => MYSQL_TYPE_FLOAT,
        DfType::Double => MYSQL_TYPE_DOUBLE,
        DfType::Date => MYSQL_TYPE_DATE,
        DfType::Timestamp { .. } => MYSQL_TYPE_TIMESTAMP,
        DfType::TimestampTz { .. } => {
            unsupported!("MySQL does not support the timestamp with time zone type")
        }
        DfType::Binary(_) => {
            // TODO(aspen): I don't know if this is right
            colflags |= mysql_srv::ColumnFlags::BINARY_FLAG;
            MYSQL_TYPE_STRING
        }
        DfType::VarBinary(_) => {
            // TODO(aspen): I don't know if this is right
            colflags |= mysql_srv::ColumnFlags::BINARY_FLAG;
            MYSQL_TYPE_VAR_STRING
        }
        DfType::Enum { .. } => {
            // TODO(aspen): I don't know if this is right
            colflags |= mysql_srv::ColumnFlags::ENUM_FLAG;
            MYSQL_TYPE_VAR_STRING
        }
        DfType::Time { .. } => MYSQL_TYPE_TIME,
        DfType::Json => MYSQL_TYPE_JSON,
        DfType::Numeric { .. } => MYSQL_TYPE_DECIMAL,
        DfType::MacAddr => unsupported!("MySQL does not support the MACADDR type"),
        DfType::Inet => unsupported!("MySQL does not support the INET type"),
        DfType::Uuid => unsupported!("MySQL does not support the UUID type"),
        DfType::Jsonb => unsupported!("MySQL does not support the JSONB type"),
        DfType::Bit(size) => {
            if size <= 64 {
                MYSQL_TYPE_BIT
            } else {
                unsupported!("MySQL bit type cannot have a size bigger than 64")
            }
        }
        DfType::VarBit(_) => unsupported!("MySQL does not support the bit varying type"),
        DfType::Array(_) => unsupported!("MySQL does not support arrays"),
    };

    for c in col.base.iter().flat_map(|b| &b.constraints) {
        match *c {
            ColumnConstraint::AutoIncrement => {
                colflags |= mysql_srv::ColumnFlags::AUTO_INCREMENT_FLAG;
            }
            ColumnConstraint::NotNull => {
                colflags |= mysql_srv::ColumnFlags::NOT_NULL_FLAG;
            }
            ColumnConstraint::PrimaryKey => {
                colflags |= mysql_srv::ColumnFlags::PRI_KEY_FLAG;
            }
            ColumnConstraint::Unique => {
                colflags |= mysql_srv::ColumnFlags::UNIQUE_KEY_FLAG;
            }
            _ => (),
        }
    }

    // TODO: All columns have a default display length, so `column_length` should not be an option.
    let column_length = match col.column_type {
        DfType::Char(l, ..)
        | DfType::VarChar(l, ..)
        | DfType::Binary(l)
        | DfType::VarBinary(l)
        | DfType::Bit(l) => Some(l.into()),
        _ => None,
    };

    Ok(mysql_srv::Column {
        table: col
            .column
            .table
            .clone()
            .unwrap_or_else(|| Relation {
                schema: None,
                name: "".into(),
            })
            .display(nom_sql::Dialect::MySQL)
            .to_string(),
        column: col.column.name.to_string(),
        coltype,
        column_length,
        colflags,
        character_set: DEFAULT_CHARACTER_SET,
    })
}