etl vs elt

after the compiler memory address alignment is processed. But here is our own management of memory, so the memory alignment must be done by ourselves. So since the current pointer is 8 bytes, if the key Len plus 2 is the value of 13, it should be adjusted to 16 bytes; If the value is 17, it should be resized to a size of 24 bytes. So this macro is a smooth find out the size of the memory of an element of the value. Here is the detailed code for hash table initialization and parsing ngx_in

Four types of BI open source tools introduction-spagobi,openi,jaspersoft,pentaho1 Brief Introduction to BI systemsFrom a technical point of view BI includes ETL, DW, OLAP, DM and other links. Simply put, the transaction system has already occurred data, through the ETL tool extracted to the subject of a clear data warehouse, after the OLAP generation cube or report, through the portal to show users, users u

Summary As the saying goes: "Ten years to grind a sword", Microsoft through 5 years of careful build, in 2005 heavily launched SQL Server 2005, this is from SQL Server 2000 after another. This enterprise-class database solution consists of the following aspects: Database Engine Services, data mining, Analysis Services, Integration Services, Reporting services, Among them integration Services (that is, SSIS), is the intermediary between them, the link between the various sources of data, through

Open-source Bi SYSTEM Directory Open-source Bi system Classification Bi application tools ETL tools Table tools Eclipse Birt OLAP tools Open source database Open-source Bi suite Bizgre Openi Pentaho Spagobi Open-source Bi system Classification Bi applicatio

BI Financial DBDIFF Analysis Issue, Core formula: DB --> ETL --> DW vs REF file Cause of error: 1. DB/DW Connection Issue 2. SQL Issue 3. Product Bug 4, REF file not updated Physical requirement analysis: 1. Source DB: EBS, PSFT, Fusion... DB Instance 2. DW: Ignore the storage form of the data source and store the data in the same form. Logic requirement analysis: 1. ETL process: The data stored in Sourc

Set (0.00 sec) elt () if n=1, returns STR1 if n=2, returns STR2, and so on. If n is less than 1 or greater than the number of arguments, NULL is returned. ELT () is a field () inverse Operation elt (n,str1,str2,str3,...) mysql> Select ELT (1,user (), version ()), +-----------------

I have been involved in a DW Project (Sony China tri-one project) in Sony recently ), It is mainly responsible for ETL the user's production and analysis data from SAP to the pool built in Oracle, and provides corresponding data interfaces for other systems. In addition, this pool is designed and built based on user requirements.Objectively speaking, part of our work is the foundation and key core of this branch project in the DW project. Of course, p

Core formula:----and ETL----DW vs REF fileCause of Error:1, DB/DW Connection Issue2, SQL Issue3, Product Bug4, REF File not updatedPhysical Requirements Analysis:1, Source Db:ebs, psft, Fusion ... DB Instance2, DW: Ignores the storage form of the data source and stores the data in the same form.Logic Requirements Analysis:1, ETL process: The data stored in Source DB would be extracted, transformed, andloade

1, the drop table, how to recover Copy Code code as follows: CREATE TABLE ETL (ID number); INSERT into ETL values (1); Commit drop table ETL; If the drop table ETL Purge--no recovery is possible The following table recovery is performed: (1) to introduce the view for recovery: Dba_recy

: HEX (n_or_s) If n_or_s is a number, returns a string representation of the hexadecimal value n, where n is a longlong (BIGINT) number. This is equivalent to CONV (n,10,16). If n_or_s is a string, the return value is a n_or_s hexadecimal string representation, where each character in each n_or_s is converted to two hexadecimal digits. The following is a code fragment: The code is as follows Copy Code mysql> SELECT HEX (255);-> ' FF 'Mysql> SELECT 0x616263;-> ' a

(c *consistent) Forceset (Keys ...string) {MEMS: = C.members () for _, ELT: = range MEMS {var found = FalseFoundloop:for _, K: = Range keys {if k = = ELT {found = True BreakFoundloop}} If!found {c.remove (ELT)}} for _, K: = Range keys {C.rlock () _, OK: = c.members[ K] C.runlock () if!ok {C.add (k)}}}func (c *consistent)ADD(ELTstring{c.lock () defer c.unlock ()

What is Data extractionData extraction refers to the data that is needed to extract the destination data source system from the source data source system. In practical application, the data source is mostly used in relational database.EditHow data is pumped(a) Full-scale extractionFull-volume extraction is similar to data migration or data replication, which extracts the data from a table or view in the data source intact from the database and transforms it into a format that your

Tags: src optional system option tin completed format invalid timeIn the Oracle database, sometimes the ALTER SYSTEM kill session ' sid,serial# ' is used to kill a session process, but after the session is killed with this SQL statement, the database does not immediately release the associated resources. Sometimes you will find that the locked resource is not released for a long time, even if the session state is "killed", it will still block other sessions. Below, based on Eygel's "Kill session

Label:Reprint: http://www.cnblogs.com/kerrycode/p/4034231.htmlIn the Oracle database, sometimes the ALTER SYSTEM kill session ' sid,serial# ' is used to kill a session process, but after the session is killed with this SQL statement, the database does not immediately release the associated resources. Sometimes you will find that the locked resource is not released for a long time, even if the session state is "killed", it will still block other sessions.Below, based on Eygel's "Kill session in O

Construction Practice-add data to ODS tables44. Data Warehouse Construction Practice-add data to ODS tables (Continued 1: Considering Incremental data)45. Data Warehouse Construction Practice-add data to the ODS table (Continued 2: Increase the number of records)46. Data Warehouse Construction Practice-Modify the ETL Stored Procedure for ODS47. Data Warehouse Construction Practice-debugging the ETL storage

Tags: share his view system interactive desc find picture Web service pwd1. List The files of the current directoryLS lists all files or foldersLs–l lists so files and their detailed detailsLS *file lists the files that begin with fileLs-l *.doc gives all files that end with. doc in the current directory2. Copy file CPCP flt_date201505.apk FLT_DATE201506.APKCopy a file to flt_date201506.apkCP Flt_date201405.tsv/etl/app/temp/ffCopy the file flt_date201

. getElementById ('cfdd'). value); clearInterval (inter);", 300 );Gsc_show (document. getElementById ('search-results '));} Function gsc_show (elt){If (elt) elt. style. display = 'block ';} Function gsc_hide (elt){If (elt) elt. st

f_OpenDialog (){Var sHTML = '''New NeatDialog (sHTML, "select an Excel document! ");}// Close and remove the pop-up windowNeatDialog. prototype. close = function (){If (this. elt ){This. elt. style. display = "none ";This. elt. parentNode. removeChild (this. elt );}Window. neatDialog = null;}// Create a pop-up windowF

Remaining Time: 1 hour: 40 minutes: 30 seconds Copy codeThe Code is as follows: 1 /* * Countdown plug-in, mainly used for time-limited purchase * By wayshan Version 1.0 * Usage: * $ (Function (){ * $ ("# ElementId"). countdown ({ * Edate: "15:14:23" *}); *}) */; (Function ($ ){$. Fn. countdown = function (options ){If (this. length = 0 ){Return false;}Return this. each (function (){Var Default = {Sdate: null, // start time (Format: "10:10:10") can be set as the server timeEdate: null, // end da

hash table initialization structure pointer; * Name is an array of elements to be added to the hash table structure; * Nelts is the number of elements in the array of elements to be added; Ngx_int_tngx_hash_init (ngx_hash_init_t *hinit, ngx_hash_key_t *names, ngx_uint_t nelts) {U_char *elts; size_t Len; U_short *test; ngx_uint_t I, N, key, size, start, bucket_size; ngx_hash_elt_t *elt, **buckets; for (n = 0; n Hash Lookup functionThe h