This is an original action in prohibition. Relator asks us to prohibit respondent Sloan from empaneling a jury to determine the damages, if any, petitioner suffered as a result of breach of a covenant not to compete by defendant below.
The case is before Judge Sloan on remand from this court,
Willman v. Beheler,
After remand a hearing was scheduled for January 16, 1978. On January 12, 1978, defendant requested and respondent granted an order to empanel a jury at law (not merely an advisory jury), to determine the remaining issues of damages. On January 16,1978, relator filed his petition for a writ of prohibition. On February 22, 1978 our provisional rule issued.
The Missouri constitution provides “[tjhat the right of trial by jury as heretofore enjoyed shall remain inviolate . .”, Mo.Const. art. I, § 22(a). However, there is no right to trial by jury in a case in equity,
State ex rel. Duggan v. Kirkwood,
Respondent replies that because the only issue on remand is whether relator sustained damages due to the breach of the restrictive covenant, the case, while originally filed in equity, has been converted into a case in which only the legal issue of damages remains. Since an action is generally considered legal rather than equitable when the only relief sought is money damages, thus entitling a defendant to trial by jury,
Jaycox v. Brune,
The principles cited by respondent are valid, but they do not meet the issue to be resolved in this case. The usual rule, as quoted above from
Willman,
is that equity will retain jurisdiction of a cause once it has acquired it in order to afford full relief. As respondent notes, an important exception to
*423
this rule applies “when the
facts
relied on to sustain the equity jurisdiction fail of establishment,”
Jaycox,
However, this court found in
Willman v. Beheler,
In
Willman,
we further determined that since an injunction would be ineffective, the best manner by which the restrictive covenant could alternatively be enforced was damages, and remanded for a determination of whether damages in fact resulted from the breach and the extent of them. In so doing, we cited extensively cases holding that a court of equity may retain jurisdiction of a case to grant damages where equity requires this form of relief in the circumstances.
Id.
at 778.
See, also Rockhill Tennis Club of Kansas City v. Volker,
