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A few days ago, csdn answered other people's questions: How does SQL rank a specified person? Now, the results are recorded. I. Test Data: Select .*Into # tmp_markFrom (Select id = 1, myname = 'xiaoming ', mypass = 123UnionSelect id = 2, myname = 'floret ', mypass = 122UnionSelect id = 3, myname = 'little East', mypass = 111UnionSelect id = 4, myname = 'mavericks ', mypass = 122) 2. rankings are arranged by mypass, which increases seq
Netout Conn Time *0 103334 *0 *0 0 1|0 0 40.1g 80.7g 31.7g 0 syslog:0.1% 0 0|0 56|0 6m 31m 122 16:55:19 *0 103299 *0 *0 0 3|0 0 40.1g 80.7g 31.7g 0 syslog:0.0% 0 0|0 55|0 6m 31m 122 16:55:20 ...... *0 102858 *0 *0 0 3|0 0 40.1g 80.7g 31.7g 0 syslog:0.0% 0 0|0 66|0 6m 31m 122 16:55:26 *0 103201 *0 *0 0 1|0 0 40.1g 80.7g 31.7g 0 syslog:0.0% 0 0|0 60|0 6m 31m
for the primary key sorting operation; Indexing does not function as an optimal sort for an indexed field that is not in the selection criteria; Sorting fields on numeric types is much more efficient than sorting on string type fields. In the following, we study the order of the index fields in the selection criteria, whether the database will optimize the sorting algorithm, we use the Up_user table to study. SELECT * from Up_user where score > 10000;# query_time:0.001470lock_t
(stringserializer.java:18) at Org.codehaus.jackson.map.ser.std.MapSerializer.serializeFields (mapserializer.java:262) at Org.codehaus.jackson.map.ser.std.MapSerializer.serialize (mapserializer.java:186) at Org.codehaus.jackson.map.ser.std.MapSerializer.serialize (mapserializer.java:23) at Org.codehaus.jackson.map.ser.std.stdcontainerserializers$indexedlistserializer.serializecontents ( stdcontainerserializers.java:122) at org.codehaus.jackson.map.ser
Content from Opencv-python tutorials own translation finishing TargetBlur the image using different Low-pass filtersFilter the image using a custom filter (two-dimensional convolution) 2D convolution (image filtering)The image can be low pass filter and High-pass filter, Low-pass filter can make the image remove noise, high pass filter can find the edge of the image.OPENCV provides a cv2.filter2d function for convolution operations on an image.For example, the kernel of mean filtering for the im
space ID 1 is already used Page_id:8, Next page_id:4294967295 Record position:65 Checking field lengths for a row (sys_tables): Offsets:16 8 50 3 2 0 0 0 0 0 Db/table:infimum Space id:1768842857 (0x696e6669) Next Record at offset:8d Record position:8d Checking field lengths for a row (sys_tables): offsets:16 11 17 24 32 36 40 48 52 52 Db/table:sys_foreign Space id:0 (0x0) Next Record at Offset:d5 Record Position:d5 Checking field lengths for a row (sys_tables): offsets:16 16 22 29
graph by setting the polar argument to true by using the subplot () in your program to create a child graph, and then call Plot () to draw in a polar-coordinate child diagram. Example 1 Fig = Plt.figure ()AX = fig.add_axes ([0.0, 0.0,. 6,. 6], Polar=true)t = linspace (0, 2 * pi, 100)Ax.plot (T, T, color= ' Blue ', lw=3); Example 2 Import NumPy as NPImport Matplotlib.pyplot as Plttheta = Np.arange (0, 2*np.pi, 0.02)Plt.subplot (121, Polar=true)Plt.plot (Theta, 1.6*np.ones_like (theta), linewidt
];//declares that the variable stores the maximum value (and can also be written as int max=int. MinValue (assigns the smallest value represented by an integer type to max) There's a function like this.int mon=num[0];//declares a variable to store the minimum valueint sum=ave=0;for (int i=0;i{if (Nums[i]>max){Max=nums[i];}if (nums[i]>min){Min=nums[i];}Sum+=nums[i];Ave=sum/nums.length;}Console.WriteLine ("The maximum value in the array is {0}, the minimum value is {1}, the sum is {2}, the average
it.public class Mainactivity extends Activity {@Overrideprotected void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Requestwindowfeature (window.feature_no_title);D ragpager dragpager = new DragPager (this); View content = new View (this), Content.setbackgroundcolor (Color.Blue);d ragpager.setcontent (content); View Mentu = new View (this), Mentu.setbackgroundcolor (color.red);d Ragpager.setbackgroundcolor (Color.argb (122
procedure in the dbms_system package, which is not described here. I will focus on the methods provided after Oracle 10 Gb.After 10 Gbit/s, Oracle provides the dbms_monitor package to enable or disable SQL tracking, and enables SQL tracking at the session, client, component, and database level. Note that only dba users are allowed to use SQL tracking. Session level The following PL/SQL statements enable SQL tracking at level 122 for sessions with ID
// 14 32// 21 33// 22 34// Use cvtranspose again when to recoverFor three channels// 3 channelsCvmat mathdr, * MAT;Double data [] ={ 111,112,113,121,122,123,211,212,213,221,222,223 };Cvmat * orig = cvmat (2, 2, cv_64fc3, data );// (111,112,113) (121,122,123)// (211,212,213) (221,222,223)MAT = cvreshape (orig, mathdr, 3, 1); // new_ch, new_rowsCv3doublematprint (MAT); // above// (111,112,113) (121,122,123) (211,212,213) (221,222,223)// Concatinate in column first orderMAT = cvreshape (orig, ma
UnitUnit1; Interface UsesWindows, messages, sysutils, variants, classes, graphics, controls, forms,Dialogs, stdctrls; Type Tform1 = Class (Tform)Button1: tbutton;Button2: tbutton; Procedure Button1click (Sender: tobject ); Procedure Formcreate (Sender: tobject ); Procedure Formdestroy (Sender: tobject ); Procedure Button2click (Sender: tobject ); Private {Private Declarations} Public {Public declarations} End ; VaRForm1: tform1; Implementation {$ R *. DFM} UsesInifiles;// Th
12: alter session set events '10046 trace name context forever, level 12' The statement used to disable SQL tracing for the session is as follows: alter session set events '10046 trace name context off' You can also use the set_ev stored procedure in the dbms_system package, which is not described here. I will focus on the methods provided after Oracle 10 Gb.After 10 Gbit/s, Oracle provides the dbms_monitor package to enable or disable SQL tracking, and enables SQL tracking at the session, clie
Router>enrouter#config tenter configuration commands, one per line. End with Cntl/z.router (config) #int f0/ 0Router (config-if) #no shut%link-5-changed:interface fastethernet0/0, CHANGED state to up% Lineproto-5-updown:line protocol on Interface fastethernet0/0, changed state to Uprouter (config-if) #ip add 192.168 .0.1 255.255.255.0Router (config-if) #do ping 192.168.0.2type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:.!!!! Success rate is perc
. Obtain the string of the specified character set. For example, in the following example, a string with uppercase letters is used.Sscanf ("123456 abcdedfbcdef", "% [^ A-Z]", Buf );Printf ("% s \ n", Buf ); Result: 123456 abcdedf6. Given a string iios/12DDWDFF @ 122, get the string between/and @ and filter out "iios/" first, then, send a string of content other than '@' to the buf.Sscanf ("iios/12DDWDFF @ 122
113" },{ id: 114, pId: 11, name: "leaf node 114" },{ id: 12, pId: 1, name: "parent node 12" },{ id: 121, pId: 12, name: "leaf node 121" },{ id: 122, pId: 12, name: "leaf node 122" },{ id: 123, pId: 12, name: "leaf node 123" },{ id: 124, pId: 12, name: "leaf node 124" },{ id: 13, pId: 1, name: "parent node 13", isParent: true}, {id: 2, pId: 0, name: "parent node 2" },{ id: 21, pId: 2, name: "parent node 21"
. printstacktrace ();}Return 0;}/*** Obtain the public key from the Public Key Data* @ Param bpubkeyinput* @ Return*/Publickey getrsapubkey (byte [] bpubkeyinput ){Byte [] bx509pubkeyheader = {48,-127,-97, 48, 13, 6, 9, 42,-122, 72,-122,-9, 13, 1, 1, 1, 5, 0,3,-127,-115, 0 };Try {Byte [] bpubkey = new byte [bpubkeyinput. Length + bx509pubkeyheader. Length];System. arraycopy (bx509pubkeyheader, 0, bpubkey, 0
third number to get 132. Similarly, 213 and 321 can be obtained based on 231 and 312. Therefore, we can know that the full arrangement is to switch each number from the first number to the number next to it. After finding this rule, recursive code is easily written: #include Another method: // K indicates the number selected, and M indicates the total number of void permutation (char * pstr, int K, int m) {assert (pstr ); if (k = m) {static int num = 1; // local static variable, used to count
size: 165 Setting SPACE = 1 in SYS_TABLE for 'test'. 'testibd' Check if space id 1 is already used Page_id: 8, next page_id: 4294967295 Record position: 65 Checking field lengths for a row (SYS_TABLES): OFFSETS: 16 8 50 3 2 0 0 0 0 0 0 Db/table: infimum Space id: 1768842857 (0x696E6669) Next record at offset: 8D Record position: 8D Checking field lengths for a row (SYS_TABLES): OFFSETS: 16 11 17 24 32 40 48 52 52 Db/table: SYS_FOREIGN Space id: 0 (0x0) Next record at offset: D5 Record position:
The key to monitoring the CPU and memory of the switch is to find the correct OID, please refer to the following blog post for how to find the OID.http://tryrus.blog.51cto.com/10914693/1788833Before looking at this blog post please make sure that you have an understanding of the basic operation of Zabbix, there is no clear place to read my previous blog post.http://tryrus.blog.51cto.com/10914693/1772271http://tryrus.blog.51cto.com/10914693/1782062First, configure the environmentCentOS 7 Linux ve
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