The CALL statement is used to call a procedure. Functions and procedures can call procedures, even recursively. However, called procedures cannot return table values when called from inside another function or procedure. Only functions can return table values. Note that the top-level procedure can return values through the JDBC to the calling application. 

CALL <procedure_name> (IN | OUT | INOUT <variable_name>[, ...])
procedure_name
is the name of the procedure you want to call.
IN
specifies that the parameter is an input parameter.
OUT
specifies that the parameter is an output parameter.
INOUT
specifies that the parameter is an input and output parameter.
variable_name
is the name of the variable in the parameter.