# Functions
ErrorContains checks whether an error contains a needle.
IsMysqlError checks whether an error is a Mysql error of a certain type.
# Constants
DuplicateEntryError represents a mysql Duplicate Entry Error.
ForeignConstraintError represents a mysql Foreign Constraint Error.
LockDeadlockError represents a mysql Lock Deadlock Error.
# Type aliases
MysqlErrorNumber represents the code number of a mysql error.