aironet 1100

| | | |-------------------------------------------------------------------------------------------------------------- ---predicate information (identified by Operation ID):---------------------------------------------------3-filter (" T3 "." N "=1100) 4-access (" T3 "." ID "=" T4 "." t3_id ") filter (" T3 "." ID "=" T4 "." t3_id ")use hint to let execution plan take T4 as driver tableSql> Select/*+ leading (T4) use_merge (T3) */* 2 fro

decimal 0.1 and 0.2 into binary: 0.1 = 0.0001 1001 1001 1001 ... (1001 infinite loop) 0.2 = 0.0011 0011 0011 0011 ... (0011 Infinite loop) but the number of bits of our computer's hardware storage is limited and impossible to loop indefinitely, the general double-precision floating-point numbers occupy a total of 64 bits, of which up to 53 bits is a valid precision number (including the sign bit), so when stored: 0.1=>0.0001 1001 1001 1001 1001 1001 1001 1001 1001 1001 1001 1001 10010.2=>0.0011

= 6Since the highest bit is 1, that is, a negative number:-6So ~ 5:-6 Example 2:Int A = 0x1234; // 0001 0010 0011Int B = (~ A) 0xff;Int c = B ^ 12;~ A:0001 0010 0011 0100Reverse:1110 1101 1100 1011 (the highest bit is 1, that is, a negative number. The negative number rule [returns the inverse of the absolute value of the original code + 1]. Then the Inverse Calculation is performed here. First,-1 is used to obtain the inverse absolute value)-1:1110

integrity. Therefore, the value range of the Eight-bit binary is-128 ~ + 127. During computation on a computer, all computation is performed by Code complement. The essence of the computation inside the computer is the Code complement operation. The following example showsSuppose a = 60, B = 13 The source code of A + BA is: 0011 1100 A's reverse code: 0011 1100a's complement: 0011 1100b's original code: 0000 1101 B's reverse code: 0000 1101b's comple

Download Phpexcel (https://github.com/PHPOffice/PHPExcel)Unzip the downloaded zip package to./thinkphp/library/vendorOne, import Excel dataController custom, here with IndexController.class.php Output: Array (1 = = Array (' a ' = ' = ' branch name ', ' B ' + = ' name ', ' C ' + = ' amount '), 2 = = Array (' a ' = = ' A branch ', ' b ' = ' Juanjuan Zhao ', ' c ' and ' = 1100, ' 3 ' + ' array (' a ' = ' B ' branch ', ' b ' = ' = ' Kongjian ', ' c ' =

Transaction isolation mechanism _ pessimistic lock _ optimistic lock, transaction isolation mechanism 5. Concurrent Transaction ProcessingA) features of transactions: ACIDI. AtomicityIi. ConsistencyIii. IsolationIiii. Durability persistenceB) problems that may occur during transaction concurrencyI. Category 1 Lost Update) Time Withdrawal transaction Deposit transaction B T1 Start transaction T2 Start transaction T3 The account balance is

each member to log on to the registration system. This can be calculated using the following method.c=1000*5/30=166.7C represents the average number of concurrent users, then the average number of concurrent users per second for this registration system is 166Of course, in the performance test, any formula is not rigorous, the most important thing is to make effective and correct analysis of the system.Methodology-3:The maximum number of concurrent users of a system is

/ 0110 1001 / \ / 01 10 10 01 /\ /\ /\ /0 1 1 0 1 0 0 1The first step is to swaps all odd and even bits. After the swap consecutive pairs of bits, and so on ...Therefore, only a total of log (n) operations is necessary.The below code shows a specific case where n = =, but it could is easily adapted to larger N's as well.Three. Sample code class solution { Public: uint32_t reversebits (uint32_t N) {uint32_t result =0;if(

MAX_SAL_50 MAX_SAL_75 -------------------------------------------------------------------------------- KING 5000 10 0 5000 3725 2450 CLARK 2450 5000 3725 2450 1875 MILLER 1300 10 1 5000 3725 2450 SCOTT 3000 20 0 3000 3000 2975 FORD 3000 20 0 3000 3000 2975 JONES 2975 20. 5 3000 3000 2975 1100 ADAMS 1100 20. 75 3000 3000 2975 SMITH 800 20 1 3000 3000 2975 BLAKE 2850 30 0 2850 1575 1375 ALLEN 1600 30. 2 2850

extended (or "high") ASCII codes. The expanded ASCII code allows 8th characters of each character to be used to determine the additional 128 special characters, foreign letters, and graphical symbols. The following is a standard ASCII table: Bin dec hex Abbreviation/character explanation0000 0000 0 00 NUL (null) NULL Character0000 0001 1 01 start of Soh (start of handing) Title0000 0010 2 02 STX (start of text) body start0000 0011 3 03 etx (end of text) End of Body0000 0100 4 04 EOT (end of tra

,--expiredate expire_date-I.,--inactive inactive-M,--mindays min_days-M,--maxdays max_days-W,--warndays Warn_daysTo view the user's related ID information: ID-u:uid-g:gid-g:group-n:nameTo switch users or perform as a different user: SuSu UserName: non-login switchSu-username: Login switch. The target user's profile is read and completely switched.Note:root to other users without a password, a password is required for non-root user Switching.A different Identity execution command: su-username-c '

A friend found me, said he did the wrong operation of the production library, resulting in database anomalies, please I help processing, the/U01 directory modified users and permissions, resulting in the database can not log on, but the business continues Error Operation command Mkdir-p/u01/app/gridMkdir-p/u01/app/11.2.0/gridChown-r grid:oinstall/u01Mkdir-p/u01/app/oracleChown oracle:oinstall/u01/app/oracleChmod-r 775/u01Try Sqlplus Login Database ORA-12547[Oracle@www.xifenfei. COM admin]$ sql

> Select 1 from dual where null= '; No records found. Sql> Select 1 from dual where ' = '; No records found. Sql> Select 1 from dual where null is null; 1 --------- 1 Sql> Select 1 from dual where NVL (null,0) =NVL (null,0); Got is all the data that's empty and not empty 1 --------- 1 The null value is added, subtract, multiply, divide and so on operation, the result is still empty. Sql> select 1+null from dual; Sql> select 1-null from dual; Sql> select 1*null from dual; Sql> sel

the local area network (54 gigabit ports) and as a high-density 10/100m access switch (providing 216 100M ports). On the basis of its high performance and high reliability, it also provides users with abundant flow control, priority access and service quality control, network security control and other functional means, and has good scalability. Superstack II Switch 9300--is suitable for medium-scale communities with high bandwidth requirements for the backbone of the park. Provides 12 1000BAS

] to indicate number I is the number of programs of JDp[i][j]= (Dp[i][j]+dp[z][j-1])%mod (z = number from 1 to i-k)But this requires a triple loop that takes more time than the data rangeAnd this is actually only related to the former (i-k), so we need to preprocess it in a rolling array.Step two: If you just put the M box, it's the second class of Stirling. But here is not much more than M boxes, so as a second class of Stirling numbers that just fit into a box (1 to m) sumThe code is as follow

Bin dec hex Abbreviation/character explanation 0000 0000 0 00 NUL (null) NULL Character 0000 0001 1 01 start of Soh (start of handing) Title 0000 0010 2 02 STX (start of text) body start 0000 0011 3 03 etx (end of text) End of Body 0000 0100 4 04 EOT (end of transmission) Transfer ended 0000 0101 5 05 Enq (Enquiry) Request 0000 0110 6 06 ack (acknowledge) received notification 0000 0111 7 07 bell 0000 1000 8 08 BS (backspace) Return 0000 1001 09 09 HT (horizontal tab) Horizontal Tab 0000 1010 10

) { Console.WriteLine ("Line 2-condition is true"); } /* Change the value of a and B */ a = false; B = true; if (a b) { Console.WriteLine ("Line 3-condition is true"); } else { Console.WriteLine ("Line 3-condition not true"); } if (! ( A b) { Console.WriteLine ("Line 4-condition is true");

namespace std; int main () {int a = 5; int B = 20; int c; if (a B) {cout When the code above is compiled and executed, it will produce the following results: Line 1-condition true Line 2-condition true Line 4-condition not true Line 5-condition trueBitwise operators Bitwise operators act on bitwise AND perform operations one by one. , | And ^ are shown as follows: P Q P q P | q P ^ q 0 0 0 0 0 0 1 0 1 1 1 1 1 1

The company's communication billing management system has an important function: Text data is imported into the database, the format of text data is: The analyzed caller number, the analyzed called number, start time (string), End Time (string), call duration, incoming relay, outgoing relay, and service type, CTX group ID, billing mark, reason for termination 61915421,075486321177, 2010-04-1023:59:34. 91,2010-04-1100:00:04. 46, 29.55, 2*37,2 *, 7,

1111 1111 1111 1111, shift it to the right and add 0 to get 0111 1111 1111 1111 1111 1111 1111 1111 230. the first digit is 0, which is a positive number. convert it to decimal format: 229 + + ...... + 20 = 230 (1-1/231)/(1-1/2) = 231-1 = 2147483647. In this way, we finally get the expected results. The results are terrible and use them with caution! Application of bitwise operators: After talking for so long, the ultimate goal is to use these operators. Let's look at some examples: Conversion