ambarella a12

calculation. The main reason is that this method does not reduce the number of multiplication of matrices. Matrix multiplication consumes much more time than matrix addition. So the breakthrough of the optimization algorithm is to reduce the multiplication operation . ~~~ According to the thought of the divide-and-conquer method, it can be seen that if we want to reduce the number of multiplication, the key is to calculate the product of 2 2-order matrices and use less than 8 times. Strassen pr

2011-01-21 11:05:19| Category: Default Category | Font size subscription Static U32 writepage (U32 addr, U8 *buf){U32 I, MECC, SECC;U8 Stat, tmp[6], value;Addr = ~0x3f;INITECC (); Reset ECCMeccunlock (); Unlock Main area ECCNfchipen (); Open the Nandflash film selectionWaitnfbusy (); Waiting for a busy signalWrnfcmd (0x80); Page Write command Cycle 1WRNFADDR (0x00); Column Address A0~a7WRNFADDR (0x00); Column Address A8~a11Wrnfaddr ((addr>>0) 0xFF); Line Address

and in is that the in-boot clause can only return a single field, such as:Select name from student where sex = ' m ' and mark in (select-from-grade where ...), the IN clause returns three fields, which is incorrect, theexists clause is allowed, but in only one field is allowed to return, and two fields can be randomly removed in the three-way.Not exists and not are the opposite of exists and in.exists (SQL returns the result set as true) notexists (SQL does not return a result set to true)The

exists (SQL returns result set, true)Not EXISTS (SQL does not return result set, true)As follows:Table AID NAME1 A12 A23 A3Table BID AID NAME1 1 B12 2 B23 2 B3Table A and table B are 1-to-many relationships a.id = B.aidSelect Id,name from A where EXIST (SELECT * from B where a.id=b.aid)Execution results are1 A12 A2The reasons can be analyzed as followsSelect Id,name from A where EXISTS (SELECT * from B wher

EXISTS (SQL returns the result set as true)Not EXISTS (SQL does not return result set is true)As follows:Table AID NAME1 A12 A23 A3Table BID AID NAME1 1 B12 2 B23 2 B3Table A and table B are 1-to-many relationships a.id = B.aidSelect Id,name from A where EXIST (SELECT * from B where a.id=b.aid)Execution results are1 A12 A2The reasons can be analyzed as followsSelect Id,name from A where EXISTS (SELECT * fro

returns the result set as true)Not EXISTS (SQL does not return result set is true) The following is a detailed description of the process of NOT exists: As follows:Table AID NAME1 A12 A23 A3Table BID AID NAME1 1 B12 2 B23 2 B3Table A and table B are 1-to-many relationships a.id = B.aidSelect Id,name from A where EXISTS (SELECT * from B where a.id=b.aid)Execution results are1 A12 A2The reasons can be analyz

= ' Wang ' or name= ' Zhao 'The result is the same.The example is as follows (that is, exists returns the same value in the WHERE clause after 2 comparisons, and not exists returns the different values in the WHERE clause):EXISTS (SQL returns the result set as true)Not EXISTS (SQL does not return result set is true)As follows:Table AID NAME1 A12 A23 A3Table BID AID NAME1 1 B12 2 B23 2 B3Table A and table B are one-to-many relationships a.id-b.aidSelec

. 2. CDMA 1X Network Structure is-95a Evolution to CDMA 1X Network, the circuit domain part of its core network is consistent with the IS-95, but in order to satisfy the packet data service, only the new PCF (Group control function), PDSN (Packet Data Service node), AAA (authentication, authorization and billing) and HA (attribution agent) and other grouped domain network elements are needed. To add A8, A9, A10, A11 interface processing between BSC-PCF and PCF-PDSN business and signaling messa

detailed description of the process of NOT exists:As follows:Table AID NAME1 A12 A23 A3Table BID AID NAME1 1 B12 2 B23 2 B3Table A and table B are 1-to-many relationships a.id = B.aidSelect Id,name from A where EXISTS (SELECT * from B where a.id=b.aid)Execution results are1 A12 A2The reasons can be analyzed as followsSelect Id,name from A where EXISTS (SELECT * from B where b.aid=1)--->select * from B WHER

that there is no upstream interface; this bit is not allowed by the new product)G, indicating the upstream GBIC interface;P indicates the upstream SFP interface;T, indicating the upstream RJ45 interface;V indicates the upstream VDSL interface;W indicates that the WAN interface can be configured on the uplink;C, indicating that the upstream interface is optional;M, indicating that the uplink interface is a Multimode Optical port;S indicates that the uplink interface is a single-mode optical port

heading "Instance" new_value inst_name format a12;Column db_name heading "DB Name" new_value db_name format a12;Column dbid heading "DB Id" new_value dbid format 9999999999 just c; PromptPrompt Current InstancePrompt ~~~~~~~~~~~~~~~~ Select d. dbid, D. name db_name, I. instance_number inst_num, I. instance_name inst_nameFrom v $ database d,V $ instance I; Variable dbid number;Variable inst_num number;Begin

Service department";Sheet. range["A9"]. Value = "Technical Department";Sheet. range["A10"]. Value = "Technology development";Sheet. range["A11"]. Value = "technical support";Sheet. range["A12"]. Value = "Pre-sales support";Sheet. range["A13"]. Value = "After-sales support";Copy CodeStep three: Set the Issummaryrowbelow property to False, that is, the summary row appears above the detail lineSheet. Pagesetup.issummaryrowbelow = false;Copy CodeStep fou

Exists (the result set returned by SQL is true)Not exists (SQL does not return true result sets)As follows:TableID name1 A12 A23 A3 Table BId aid name1 1 B12 2 B23 2 B3 A. ID => B. Aid Select ID, name from a where exist (select * from B where a. ID = B. Aid)The execution result is1 A12 A2The cause can be analyzed as follows:Select ID, name from a where exists (select * from B where B. Aid = 1)---> Select *

" new_value inst_num format 99999;Column inst_name heading "instance" new_value inst_name format A12;Column db_name heading "DB name" new_value db_name format A12;Column dbid heading "db id" new_value dbid format 9999999999 just C;PromptPrompt current instancePrompt ~~~~~~~~~~~~~~~~Select D. dbid, D. Name db_name, I. instance_number inst_num, I. instance_name inst_nameFrom v $ database D,V $ instance I;Vari

1. One of the differences between exists and in is that exists executes external queries before executing subqueries. In is used to first execute subqueries and then execute primary queries; The correlation is that the table of the exists primary query is larger than that of the subquery, and that of the in primary query is smaller than that of the subquery; 2. Example Now we have tables A and B. TableID name1 A12 A23 A3 Table BId aid name11 B122 B232

not exists is described in detail below: As follows:TableID name1 A12 A23 A3 Table BId aid name1 1 B12 2 B23 2 B3 A. ID => B. Aid Select ID, name from a where exists (select * from B where a. ID = B. Aid)The execution result is1 A12 A2The cause can be analyzed as follows:Select ID, name from a where exists (select * from B where B. Aid = 1)---> Select * from B where B. Aid = 1 A value returns true,

local aggregation values of Worker1, Worker2, Worker3, and Worker4 are recorded as follows: A11, A12, A13, and A14; for clustering machine A2, the local clustering values of Worker1, Worker2, Worker3, and Worker4 are recorded as follows: A21, A22, A23, and A24. After the computation is complete, each Worker sends the local clustering value to the Owner of the clustering machine. The Owner of the clustering machine merges and aggregates the data when

Summary:Exists (the result set returned by SQL is true) not exists (the result set returned by SQL is true) is as follows: Table A ID name 1 A1 2 A2 Exists (the result set returned by SQL is true)Not exists (SQL does not return true result sets)As follows:TableID name1 A12 A23 A3 Table BId aid name1 1 B12 2 B23 2 B3 A. ID => B. Aid Select ID, name from a where exist (select * from B where a. ID = B. Aid)Run [Zhi hang] and the result is1

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11:05:19| Category:Default category|Font SizeSubscription Static u32 writepage (u32 ADDR, u8 * BUF){U32 I, MECC, secc;U8 stat, TMP [6], value;ADDR = ~ 0x3f;Initecc (); // reset ECCMeccunlock (); // unlock the main ECCNfchipen (); // enable nandflash chip selectionWaitnfbusy (); // wait for a busy signalWrnfcmd (0x80); // page write command cycle 1Wrnfaddr (0x00); // The column address a0 ~ A7Wrnfaddr (0x00); // column address A8 ~ A11Wrnfaddr (ADDR> 0) 0xff); // The row address