furious pk

; }}//Data processing $data = $this->_facade ($data); Parse expression $options = $this->_parseoptions ($options); $PK = $this->getpk (); if (!isset ($options [' where '])) {//If the primary key data exists automatically as the update condition if (isset ($data [$pk]) {$where [$pk] = $data [$ PK];

expression $options = $this->_parseoptions ($options); $PK = $this->getpk (); if (!isset ($options [' where '])) {//If the primary key data exists automatically as the update condition if (isset ($data [$pk]) {$where [$pk] = $data [$ PK]; $options [' where '] = $where; Unset ($data [$

processing $data = $this->_facade ($data); Parse expression $options = $this->_parseoptions ($options); $PK = $this->getpk (); if (!isset ($options [' where '])) {//If the primary key data exists automatically as the update condition if (isset ($data [$pk]) {$where [$pk] = $data [$ PK]; $options ['

in mind that in hbase, you should not model the structure of a possible keyvalues or row key. This is the information you specified in Phoenix, which is beyond the table and column series. So in Phoenix, you'll create a view like this: CREATE VIEW "T1" (PK varchar PRIMARY KEY, "F1". Val varchar) The PK column declares that your row key is varchar (that is, a string), and "F1". VAL column declares that your

Stored Procedures | paging Paging stored procedures, their own "not_in" and "SET rowcount" a combination of two ways. The "SET rowcount" algorithm does not change, and the "not_in" sort adds a primary key field so that the speed increases a lot and the result is one-way only, but not reversible. "SET rowcount" does not have a speed problem, "not_in" sort after the primary key field in the 30W record on the non-indexed field, the sort of non-aggregate field to flip a page but 3 seconds, also OK:

Tags: unique constructs http. com data where flag San nodeI. Index of MYISAM MyISAM indexes are stored separately from Row records, called Nonclustered indexes (unclustered index). There is no essential difference between the primary key index and the normal index: Areas with contiguous aggregation store Row Records separately The leaf node of the primary key index, storing the primary key, and the pointer to the corresponding row record The leaf node of the normal index, stori

example, we have set up a filter to compare the model field value with a fixed value. However, if we want to compare the values of one index and other fields in the same model, django provides F () -- Special Operation for getting a column value of an object From django. db. models import FEntry. objects. filter (n_pingbacks _ lt = F ('n' _ comments '))Note: n_pingbacks and n_comments are model Entry attributes. Django supports addition, subtraction, multiplication, division, and modulo computi

-- ===================================================== ====== -- Ylb: e-commerce template -- author: YUANBO -- development time: 2011-11-9 -- thank you: liugaiz.pdf -- ============================================= ======= USE master (SELECT nameFROM sys. databases) drop database EShop GO use EShop -- 1, supplier -- Suppliers (SupplierID, -- supplier ID [PK] CompanyName ContactName nvarchar (30), -- contact name ContactTitle (60 ), -- Address: City

Reset set linesize 200 ------------------------------------ display the width of the buffer text desc user_tables; ----------------------------------- display all the table fields and structure alter table TABLE2 modify column name date; ------------------ modify the Data Type alter table TABLE2 rename column LIE3 to LIE33; ------- modify the column name alter table dbo. aaa drop constraint PK _ aaa _ 11419E22173876EA -- the simplest way to delete a p

_ name'])? $ Val ['class _ name']: $ key; // associate class name$ MappingFields =! Empty ($ val ['ing ing _ fields'])? $ Val ['ing ing _ fields ']:' * '; // ing field$ MappingCondition =! Empty ($ val ['condition'])? $ Val ['condition ']: '1 = 1'; // join condition$ MappingKey =! Empty ($ val ['ing ing _ key'])? $ Val ['ing ing _ key']: $ this-> getPk (); // associate key nameIf (strtoupper ($ mappingClass) = strtoupper ($ this-> name )){// Obtain the parent key name from the auto-reference As

method to implement Infinitus classification Ideas: 1. all the data to be processed is packaged into an array with the subscript primary key id (pk), so that the corresponding parent column can be obtained by The pid. 2. cyclically wrap the data. if it is the root node, add the reference to the tree. otherwise, add the reference to the child element of its parent class. In this way, although only the root node is added to the tree, if each root node

, but here the first annotate is used to group fields, and the second annotate is used to separately alias other fields. Q = PxbNCEUserQuest. objects. filter (user_id = 335 ). values ("user_id "). annotate (qid = Min ("question_id"), cid = Min ("catalog_id ")). annotate (uid = F ("user_id ")). values ("uid", "qid", "cid") print qprint q. query # output: [{'qid': 22, 'uid': 335L, 'CID': 17}] select min ('pxb _ nce_user_quest '. 'question _ id') AS 'qid', MIN ('pxb _ nce_user_quest '. 'catalog _ i

= "json"# Default_value = RETURN_TYPE.get (default_type)# If return_type:# If isinstance (return_type, (str, unicode )):# Default_value = RETURN_TYPE.get (return_type.lower (), default_value)# Return default_value Def _ format_params (_ pk = None, encode = None, ** kw ):""" : Param kw:: Type kw:: Param encode:: Type encode:: Return:: Rtype:""" _ Pk = '% s [% s]' % _ pk