func (e *ShowExec) fetchShowStatus() error {
statusVars, err := variable.GetStatusVars()
if err != nil {
return errors.Trace(err)
}
for status, v := range statusVars {
if e.GlobalScope && v.Scope == variable.ScopeSession {
continue
}
value, err := types.ToString(v.Value)
if err != nil {
return errors.Trace(err)
}
row := &Row{Data: types.MakeDatums(status, value)}
e.rows = append(e.rows, row)
}
return nil
}
func (s *ShowPlan) fetchShowStatus(ctx context.Context) error {
m := map[interface{}]interface{}{}
statusVars, err := variable.GetStatusVars()
if err != nil {
return errors.Trace(err)
}
for status, v := range statusVars {
if s.Pattern != nil {
s.Pattern.Expr = expression.Value{Val: status}
} else if s.Where != nil {
m[expression.ExprEvalIdentFunc] = func(name string) (interface{}, error) {
if strings.EqualFold(name, "Variable_name") {
return status, nil
}
return nil, errors.Errorf("unknown field %s", name)
}
}
match, err := s.evalCondition(ctx, m)
if err != nil {
return errors.Trace(err)
}
if !match {
continue
}
if s.GlobalScope && v.Scope == variable.ScopeSession {
continue
}
value, err := types.ToString(v.Value)
if err != nil {
return errors.Trace(err)
}
row := &plan.Row{Data: []interface{}{status, value}}
s.rows = append(s.rows, row)
}
return nil
}
