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Initializing an array arr = Np.array ([[1,2],[3,4]])arr = Np.array ([[1,2],[3,4]], Dtype=complex)arr = Np.zeros ((3,4))arr = Np.ones (())arr = Np.arange (4,10). Reshape (2,3)arr = Np.linspace (0,1,6) #[0.0,0.2,0.4,0.6,0.8,1.0]arr = Np.random.random (3)arr = Np.random.random ((5,2)) Array built-in functions Type (arr): Numpy.ndarrayArr.dtype:int32, float64 ...Arr.ndim:2Arr.size:4Arr.shape: (2l,2l)Arr.itemsize:4 Array calculation function Arr+1: Elements andArr*2:

, derived from the ID field in the Show Processlist results list.The KILL command supports two optional parameters, connection, and query.CONNECTION QUERY Terminates the statement the connection is currently executing, but leaves the connectionitself intact.Very simple,connection option, kill the time, the connection will also be broken, and the query option, the kill process just kill the command, the connection remains. When the kill instruction does not specify the connection or query option,