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block gets24 consistent gets0 physical reads0 redo size11846823 bytes sent via SQL * Net to client733734 bytes encoded ed via SQL * Net from client66668 SQL * Net roundtrips to/from client1 sorts (memory)0 sorts (disk)1000000 rows processed In this case, not only the network I/O, but also the cache I/O takes 13.50 seconds. With autotrace, we feel that using PL/SQL functions in SQL is slower than using SQL statements directly. Note: The AUTOTRACE information is not obvious here. You can use the

; oradebug event 10046 trace name context off The following content is the content in the trace file. ==================================Parsing in cursor #47006443926880 len = 27 dep = 0 uid = 0 oct = 3 lid = 0 tim = 2879240721898379 hv = 2413634929 ad = '9e709620 'sqlid = '4wn49u27xu9bj'Select * from hr. testEND OF STMTPARSE #47006443926880: c = 378943, e = 2562085, p = 13, cr = 721, cu = 0, mis = 1, r = 0, dep = 0, og = 1, plh = 121040406, tim = 287

Method 1 for querying table field attributes in Oracle: search for all indexes in the table (including index names, types, and columns): select t. *, I. index_type from user_ind_columns t, user_indexes I where t. index_name = I. index_name and t. table_name = I. table_name and t. table_name = Name of the table to be queried 2. Search for the table's primary key (including the name and column composition): select cu. * from user_cons_columns

from user_ind_columns t, user_indexes I where t. index_name = I. index_name and t. table_name = I. table_name and t. table_name = table to be queried 2. Search for the table's primary key (including the name and column composition). The table name is written as follows: Select cu. * from user_cons_columns cu, user_constraints au where cu. constraint_name = au. c

View all tables in Oracle: Select * From TAB/dba_tables/dba_objects/CAT; View the table created by the user: Select table_name from user_tables; // The table of the current user Select table_name from all_tables; // tables of all users Select table_name from dba_tables; // includes the system table Select * From user_indexes // all user table indexes can be queried. Query all user tables in all_tables Primary Key name and foreign key in all_constraints Index in all_indexes However, the primary k

ORACLE: primary key, foreign key, Uniqueness constraint, and index of the query (View) Table 1To search for all indexes of a table (including index names, types, and columns ):Select T. *, I. index_type from user_ind_columns T, user_indexes I where T. index_name = I. index_name and T. table_name = I. table_name and T. table_name =Table Name 2, Query the table's primary key (including the name, which constitutes a column ):Select cu. * From user_co

|------------------------------------------ + ----------------------------------- +Here we can see that there are differences in the execution plan. offline rebuild index creates an index through the existing index fts and sorting, the online rebuild index creates an index through the existing table fts and sort sorting. We can see that the objects in the two rebuild methods are different, in the trace of 10053 offline rebuild index, the cbo analysis's optional execution plan does not have the

Sql> CREATE TABLE t10046 as SELECT * from Dba_objects; Table created. Sql> Select File_id,block_id,blocks from dba_extents where segment_name= ' T10046 '; file_id block_id BLOCKS------------------------------1 94664 8 1 94672 8 1 94680 8 1 94688 8 1 94696 8 1 94704 8 1 94712 8 1 94896 8 1 94904 8 1 9 4912 8 1 94920 8 1 94928 8 1 94936 8 1 94944 8 1 94952 8 1 94960 8 1 95872 128 1 96000 128 1 96128 128 1 96256 128 1 96384 12 8 1 96512 128 1 96640 128 1 96768 128

Description has a cave in Byteotia. It contains n chambers and some tunnels connect them. There is only one unique path between each of the Chambers to connect them. Hansel hid the treasure in one of the chambers, but it would not say where it was. Gretel want to know. When she asks if there is a treasure in a cave room, if she guessed it, Hansel would tell her if he guessed wrong, he would tell her which direction there would be a treasure. Given the cave's information, no matter where the Hans

PHP php after page change, the problem of serial number $MYSQL->query ("Select Cu.*,cy.name from Customer cu,custtype cy where 1=1 and Cu.code=cy.code limit 0,18"); for ($i =1; $i $MYSQL->fetch ($i); $customerid = $MYSQL->data[customerid]; Customer number $KSName = $MYSQL->data[ksname]; User name-abbreviation echo "$i"; Serial number echo "$customerid"; Customer number echo "$KSName"; User name-abbreviati

.locate ('cu _ no', stest, [])==> Of course, you can find If stest is 'ac ':Table1.locate ('cu _ no', stest, [])==> Not foundTable1.locate ('cu _ no', stest, [lopartialkey])==> Find the record 'acjc kingsichin.Because the set contains the lopartialkey project, 'ac' is the same as 'acjc'The first two characters, even if the length of the two characters is not equ

C # group statistics on the practical application of Linq and Lamda expressions, When creating statistical charts in a project, you need to perform grouping statistics on the queried list data. The first thought is to avoid frequent operations on the database. Eg: // Group the Cu elements in the list by year GroupBy // contains the year, average value, maximum value, total number // write Method 1: lamda expression write method (recommended) var li

Public Function Commentlist () {$info = $this->getuserbytoken (); $shop _id = $info [' shop_id ']; $page = I (' Post.page ')?: 1 ; $pagesize = I (' Post.pagesize ')?: C (' rollpage '); $c _type = I (' Post.c_type '); $serach = I (' Post.serach '); $and = ""; if ($c _type = = 1) {# Commodity if ($c _type! = 0) {$and. = "and co.c_type= ' {$c _type} '";} if ($search) {$and. = "and" C.c_name like '%{$search}% ') "; }}else{$sql 0 = "SELECT count (s.s_id) as ItemCount from ' Erp_commod_comment ' as co

In addition to writing Cuda code directly in a project using CU or Cuh, you can place the Cuda related action code in a DLL project, compile the project into a dynamic-link library dll, and then refer to the DLL in the project you want to use and call its internal functions. Now create a new DLL project with the project name Test00302, as shown in the following illustration: Now create a new file named Test.cu in your project, as shown in the follow

can be regarded as numbers from 1 to 13.For (I = 0; I {Num1 [I] = num2 [I] = 1;}For (I = 0; I {Ans1 [I] = ans [I]. str [0]; // obtain the nominal valueAns2 [I] = ans [I]. str [1]; // colorIf (I){If (ans1 [I] = ans1 [I-1]) // record the number of timesNum1 [I] + = num1 [I-1];If (ans2 [I] = ans2 [I-1])Num2 [I] + = num2 [I-1];}}P = ans1 [0]-'1 ';If (p Return 8;If (ans1 [0] = '1' ans1 [1] = ':' ans1 [2] = '; ' ans1 [3] =' Return 8;If (num1 [3] = 4 | num1 [4] = 4)Return 7;If (num1 [2] = 3 num1 [4

1. Search all indexes of a table (including index names, types, and columns): selectt. *, I. index_typefromuser_ind_columnst, user_indexesi 1. query all indexes of a table (including index names, types, and columns): select t. *, I. index_type from user_ind_columns t, user_indexes I 1. Search for all indexes of a table (including index names, types, and columns ): Select t. *, I. index_type from user_ind_columns t, user_indexes I where t. index_name = I. index_name and t. table_name = I. ta

, in this case the SCN can be pushed directly. However, when we do the following, we find that it does not work:Alter session SET Events ' 10015 trace name ADJUST_SCN level 13740′;Further through the 10046 trace Trace, the SQL was accessed with the following blocks: Parsing in CURSOR #5 len=52 dep=1 uid=0 oct=3 lid=0 tim=1422682994194207 hv=429618617 ad= ' 395fa870 'Select CTime, Mtime, stime from obj$ where obj# =: 1End of STMTPARSE #5: c=0,e=225,p=0,cr=0,