Note An empty result set is not the same as a null value. For a scrollable cursor, all the rows in the result set are returned to the calling batch, procedure, or trigger when the procedure exits. When returned, the cursor position is left at the position of the last fetch executed in the procedure.
The wall sit strengthens your lower body. Your quadriceps on the fronts of your upper legs remain in a static contraction to support the wall sit. The hamstrings on the backs of your upper legs also remain contracted as you sit. Your glutes contract during the wall sit to keep your body stable and balanced.
Several muscles in your thigh connect to your pelvis and rotate your leg left and right. The sartorius muscle runs down and across your thigh from the lower part of your pelvis and into the inner knee. The gracilis muscle runs down the surface of your inner thigh from between your groin and into the inner knee. The tensor fasciae latae, or TFL, is a small muscle that runs from the side of your hip and down to the outer top part of your thigh. These work with the quadriceps, hamstrings, buttocks and deep hip rotators to rotate your leg.