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Search results “Alter table merge partition oracle”
PART 7 MERGE PARTITION
 
01:54
merge partition, alter table, data warehousing
part 12 truncate partition
 
01:55
Truncate partition, alter table, data warehousing
part 17 split partition
 
01:56
split partition, data warehousing, alter table
part 8 drop partition
 
01:18
drop partition alter table data warehousing
part 15 move partition
 
01:58
move partition, alter table, data warehousing
part 9 - list partition
 
02:21
list partition, data warehousing, alter table
PART 6 RANAME PARTITION
 
01:15
rename partition, data warehousing, alter table
part 16 default value add list partition
 
03:21
default value using list partition, alter table, data warehousing
02 Shared Lock & Exclusive Lock In oracle database table lock
 
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Purpose Use the LOCK TABLE statement to lock one or more tables, table partitions, or table subpartitions in a specified mode. This lock manually overrides automatic locking and permits or denies access to a table or view by other users for the duration of your operation. Some forms of locks can be placed on the same table at the same time. Other locks allow only one lock for a table. A locked table remains locked until you either commit your transaction or roll it back, either entirely or to a savepoint before you locked the table. A lock never prevents other users from querying the table. A query never places a lock on a table. Readers never block writers and writers never block readers. See Also: Oracle Database Concepts for a complete description of the interaction of lock modes COMMIT ROLLBACK SAVEPOINT Prerequisites The table or view must be in your own schema or you must have the LOCK ANY TABLE system privilege, or you must have any object privilege on the table or view. ROW SHARE ROW SHARE permits concurrent access to the locked table but prohibits users from locking the entire table for exclusive access. ROW SHARE is synonymous with SHARE UPDATE, which is included for compatibility with earlier versions of Oracle Database. ROW EXCLUSIVE ROW EXCLUSIVE is the same as ROW SHARE, but it also prohibits locking in SHARE mode. ROW EXCLUSIVE locks are automatically obtained when updating, inserting, or deleting. SHARE UPDATE See ROW SHARE. SHARE SHARE permits concurrent queries but prohibits updates to the locked table. SHARE ROW EXCLUSIVE SHARE ROW EXCLUSIVE is used to look at a whole table and to allow others to look at rows in the table but to prohibit others from locking the table in SHARE mode or from updating rows. EXCLUSIVE EXCLUSIVE permits queries on the locked table but prohibits any other activity on it. NOWAIT Specify NOWAIT if you want the database to return control to you immediately if the specified table, partition, or table subpartition is already locked by another user. In this case, the database returns a message indicating that the table, partition, or subpartition is already locked by another user. WAIT Use the WAIT clause to indicate that the LOCK TABLE statement should wait up to the specified number of seconds to acquire a DML lock. There is no limit on the value of integer. If you specify neither NOWAIT nor WAIT, then the database waits indefinitely until the table is available, locks it, and returns control to you. When the database is executing DDL statements concurrently with DML statements, a timeout or deadlock can sometimes result. The database detects such timeouts and deadlocks and returns an error.
Views: 845 OnLinE ReSoUrCe
part 7 model clause partition by
 
04:11
dimension by, partition by, model clause, sql model, data warehousing
Hive External table partitions| Hive Bucketing
 
01:07:25
This video contains rename, exchange partitions, external table partitions, Bucketing concepts. Also includes exporting hive tables to files.
Views: 144 Haha Skills
9 SQL with Oracle 10g XE   Using UPDATE to Change Data in a Table
 
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9 SQL with Oracle 10g XE Using UPDATE to Change Data in a Table
Views: 19 Cambo Movies
Split Range - Partition in SQL Server - Part 5 Tamil
 
09:09
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Adds one partition to the partition function. boundary_value determines the range of the new partition, and must differ from the existing boundary ranges of the partition function. Based on boundary_value, the Database Engine splits one of the existing ranges into two. Of these two, the one where the new boundary_value resides is considered the new partition. Before that We should add on empty file for this database and add it to Partition scheme using NEXT USED. Explained in Tamil
Views: 90 IT Port
Learn Oracle | Using Case Function, Decode Function in SQL
 
03:31
Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 386 Pebbles Tutorials
How To Alter Hive Tables : ALTER Statement
 
03:27
How to Alter Hive Tables: ALTER Statement: Here is the syntax to change the table name using ALTER statement ALTER TABLE TABLENAME RENAME TO NEW_TABLENAME And the syntax to add columns to the table using ALTER statement is: ALTER TABLE TABLENAME ADD COLUMNS (newcol1 datatype, newcol2 datatype); For replacing or removing the columns using ALTER statement we use the following syntax ALTER TABLE TABLENAME REPLACE COLUMNS (col1 datatype_new, col2 datatype);
Views: 687 BigDataElearning
Oracle Filters (Where Clause)
 
36:03
Video from our Oracle SQL course. Check out the full course at.. http://learn.hackpress.co/courses/oracle-sql-learning-by-example
Views: 494 etldeveloper
Merge Range - Partition in SQL Server - Part 4
 
05:40
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Drops a partition and merges any values that exist in the partition into one of the remaining partitions. RANGE (boundary_value) must be an existing boundary value, into which the values from the dropped partition are merged. The filegroup that originally held boundary_value is removed from the partition scheme unless it is used by a remaining partition, or is marked with the NEXT USED property. Alter Partition Function Part_Function_Name Merge Range ()
Views: 163 IT Port
Learn Oracle | How to use the Merge Statement in SQL
 
04:13
Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 1738 Pebbles Tutorials
part 4 date range partition
 
02:33
date range paritition data warehousing range partition
Split Range - Partition in SQL Server - Part 5
 
09:24
Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Adds one partition to the partition function. boundary_value determines the range of the new partition, and must differ from the existing boundary ranges of the partition function. Based on boundary_value, the Database Engine splits one of the existing ranges into two. Of these two, the one where the new boundary_value resides is considered the new partition. Before that We should add on empty file for this database and add it to Partition scheme using NEXT USED.
Views: 231 IT Port
MySQL Database Operations - Alter,Update And Delete Operations
 
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Database Operations Such as Alter,Update and Delete are performed in this video MySQL Command line Software -- https://drive.google.com/open?id=1azvhK13dKop0ofmw9RUPKpYSjryqLB3H
Views: 191 Himani Shukla
Learn Oracle | Using Rollup Function, Cube Function
 
05:50
Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 584 Pebbles Tutorials
part 14 coalescing hash partition
 
01:40
coalescing hash partition, data warehousing,alter table
Views: 1058 Dr. Girija Narasimhan
part 19 compare truncate,drop,coalsec
 
02:35
compare truncate, drop, drop list values, coalesc partition, data warehousing alter table
Partition Table in SQL Server
 
34:31
Create a filegroup Create a partition function Create a partition scheme Create or modify a table and specify the partition scheme as the storage location. Split Patition
Views: 501 Data Science Center
part 11  modify parition drop values
 
02:15
alter table modify partition, drop values,
TablePartitioning.mp4
 
15:55
Partition Tables Sql Server 2008
Views: 3092 Muhammad Shalaby
SQL 2012 Developer tutorial: Querying Partitions
 
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SQL 2012 Developer tutorial: Querying Partitions with Expert Instructor -- Frank Tillinghast. Get full course details @ http://bit.ly/12bB9bP In this course we'll explore partitioning, and specifically how it's implemented using SQL Server 2012. Partitioning is a way to manage large amounts of data, and while certainly not a new concept, SQL Server has made improvements over the years that make your job as a database architect and developer easier. We'll start off by discussing the evolution of partitioning in SQL Server. You'll learn about partition keys, schemas and functions and how they affect tables, indexes, and the organization of your data. Once you have an understanding of the basics, we'll move on to discuss methods for querying partitions. As time goes on, it may be necessary to make adjustments to your partitions. Next you'll learn how to merge or split partitions, switch out partitions, and make modifications to partition schemes. The course then concludes with some tips on how performance tuning.
Views: 3969 LearnNowOnline
oracle date and time functions
 
21:33
Video from our Oracle SQL course. Check out the full course at.. http://learn.hackpress.co/courses/oracle-sql-learning-by-example
Views: 44206 etldeveloper
part 3 range alphabet
 
05:25
data warehousing, range partition, table space, create table
Part 69   Merge in SQL Server
 
07:14
Text version of the video http://csharp-video-tutorials.blogspot.com/2014/09/part-69-merge-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2014/09/part-69-merge-in-sql-server_30.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists What is the use of MERGE statement in SQL Server Merge statement introduced in SQL Server 2008 allows us to perform Inserts, Updates and Deletes in one statement. This means we no longer have to use multiple statements for performing Insert, Update and Delete. With merge statement we require 2 tables 1. Source Table - Contains the changes that needs to be applied to the target table 2. Target Table - The table that require changes (Inserts, Updates and Deletes) The merge statement joins the target table to the source table by using a common column in both the tables. Based on how the rows match up as a result of the join, we can then perform insert, update, and delete on the target table. Merge statement syntax MERGE [TARGET] AS T USING [SOURCE] AS S ON [JOIN_CONDITIONS] WHEN MATCHED THEN [UPDATE STATEMENT] WHEN NOT MATCHED BY TARGET THEN [INSERT STATEMENT] WHEN NOT MATCHED BY SOURCE THEN [DELETE STATEMENT] Example 1 : In the example below, INSERT, UPDATE and DELETE are all performed in one statement 1. When matching rows are found, StudentTarget table is UPDATED (i.e WHEN MATCHED) 2. When the rows are present in StudentSource table but not in StudentTarget table those rows are INSERTED into StudentTarget table (i.e WHEN NOT MATCHED BY TARGET) 3. When the rows are present in StudentTarget table but not in StudentSource table those rows are DELETED from StudentTarget table (i.e WHEN NOT MATCHED BY SOURCE) Create table StudentSource ( ID int primary key, Name nvarchar(20) ) GO Insert into StudentSource values (1, 'Mike') Insert into StudentSource values (2, 'Sara') GO Create table StudentTarget ( ID int primary key, Name nvarchar(20) ) GO Insert into StudentTarget values (1, 'Mike M') Insert into StudentTarget values (3, 'John') GO MERGE INTO StudentTarget AS T USING StudentSource AS S ON T.ID = S.ID WHEN MATCHED THEN UPDATE SET T.NAME = S.NAME WHEN NOT MATCHED BY TARGET THEN INSERT (ID, NAME) VALUES(S.ID, S.NAME) WHEN NOT MATCHED BY SOURCE THEN DELETE; Please Note : Merge statement should end with a semicolon, otherwise you would get an error stating - A MERGE statement must be terminated by a semi-colon (;) In real time we mostly perform INSERTS and UPDATES. The rows that are present in target table but not in source table are usually not deleted from the target table. Example 2 : In the example below, only INSERT and UPDATE is performed. We are not deleting the rows that are present in the target table but not in the source table. Truncate table StudentSource Truncate table StudentTarget GO Insert into StudentSource values (1, 'Mike') Insert into StudentSource values (2, 'Sara') GO Insert into StudentTarget values (1, 'Mike M') Insert into StudentTarget values (3, 'John') GO MERGE INTO StudentTarget AS T USING StudentSource AS S ON T.ID = S.ID WHEN MATCHED THEN UPDATE SET T.NAME = S.NAME WHEN NOT MATCHED BY TARGET THEN INSERT (ID, NAME) VALUES(S.ID, S.NAME);
Views: 100110 kudvenkat
GParted : To Modify and Resize Hard Disk Partition in Linux Mint 13/14
 
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Parted is a free partition editor for graphically managing your disk partitions. With GParted you can resize, copy, and move partitions without data loss, enabling you to: Grow or shrink your drive Create space for new operating systems Attempt data rescue from lost partitions More Information : http://gparted.sourceforge.net/ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ # Visit my blog for more updates - http://linuxforever.info/ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤ ❤
Views: 161788 linuxforever
Parallelism & Partitioning Techniques : Video 7 (HD)
 
50:11
Explains Parallel Processing Environments (SMP, MPP architecture)*, Parallelisms (Pipeline, Partition), Types of Partition Techniques* (Round-Robin, Hash, Entire, Same, Auto, Range, Random, DB2, Modulus) and RCP (Run-time Column Propagation) Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 57151 Tutorial
Creating and Formatting Partitions with FDISK and mkfs - BASH - Linux
 
08:21
http://filmsbykris.com/wordpress/?p=318 Got Questions? visit http://FilmsByKris.com/forum Chat with us and learn more http://FilmsByKris.com/irc
Views: 104450 Kris Occhipinti
PART 6 DIMENSION
 
04:39
create dimension, hierarchy, data warehousing
Part 2 SQLServer Partitioned Table
 
04:36
Arabic Series for SQL Server create Database Partitioned Table
Views: 2518 amosaEgy
Trailer for SQL 2012 Developer tutorial: Partitions
 
01:43
Trailer for SQL 2012 Developer tutorial: Partitions with Expert Instructor -- Frank Tillinghast. Get full course details @ http://bit.ly/12bB9bP In this course we'll explore partitioning, and specifically how it's implemented using SQL Server 2012. Partitioning is a way to manage large amounts of data, and while certainly not a new concept, SQL Server has made improvements over the years that make your job as a database architect and developer easier. We'll start off by discussing the evolution of partitioning in SQL Server. You'll learn about partition keys, schemas and functions and how they affect tables, indexes, and the organization of your data. Once you have an understanding of the basics, we'll move on to discuss methods for querying partitions. As time goes on, it may be necessary to make adjustments to your partitions. Next you'll learn how to merge or split partitions, switch out partitions, and make modifications to partition schemes. The course then concludes with some tips on how performance tuning.
Views: 318 LearnNowOnline
Part 6   Transform rows into columns in sql server
 
08:53
Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/06/part-6-transform-rows-into-columns-in.html This is another common sql server interview question. We will be using Countries table in this example. SQL to create the table Create Table Countries ( Country nvarchar(50), City nvarchar(50) ) GO Insert into Countries values ('USA','New York') Insert into Countries values ('USA','Houston') Insert into Countries values ('USA','Dallas') Insert into Countries values ('India','Hyderabad') Insert into Countries values ('India','Bangalore') Insert into Countries values ('India','New Delhi') Insert into Countries values ('UK','London') Insert into Countries values ('UK','Birmingham') Insert into Countries values ('UK','Manchester') Here is the interview question. Write a sql query to transpose rows to columns. Using PIVOT operator we can very easily transform rows to columns. Select Country, City1, City2, City3 From ( Select Country, City, 'City'+ cast(row_number() over(partition by Country order by Country) as varchar(10)) ColumnSequence from Countries ) Temp pivot ( max(City) for ColumnSequence in (City1, City2, City3) ) Piv
Views: 189158 kudvenkat
Delete, Drop, and Truncate Statements in Hive
 
06:41
Delete, Drop, and Truncate Statements in Hive Delete Statement: Delete statement is used to delete certain rows from a table based on a condition specified using the WHERE clause. The syntax is in below as highlighted. DELETE FROM tablename [WHERE expression]; Note: DELETE statement is available from hive 0.14.0 version and above Drop Statement: The drop table statement is used to drop the table altogether. The syntax is highlighted here: DROP TABLE IF EXISTS TABLENAME; Let’s quickly see how the managed table and external table differs when dropping the table. We have already discussed this in the “Two different types of hive tables” video. Take a look at it if you haven’t. For the managed hive tables, the drop table statement removes the metadata information as well as the data. The data will be actually moved to .Trash/Current directory. metadata will be permanently deleted. However for external tables, only the metadata information is permanently deleted and the actual data remains intact in the hdfs directories. So in the case of external table, if the table was deleted accidentally, then the table can be re-created by using the same schema and specifying the same location for the hdfs data directory. If deleting the external table was the intention, then after deleting the table using the drop statement, you may also delete the underlying hdfs data directory by issuing the hdfs dfs -rm command. Truncate Statement: Truncate table statement is used to remove only the data from the table. The table structure with the schema remains intact. Truncate removes all the rows from a table or partition. The syntax is highlighted below. TRUNCATE table syntax TRUNCATE TABLE TABLENAME;
Views: 1391 BigDataElearning
Resizing a Linux Partition using GPARTED
 
04:01
Resize a VMs virtual drive using GPARTED. this step follows an earlier increase in size performed by Oracle's VirtualBox which effectively increased the available size but did not utilise all of it until now!
Views: 22992 Mon Goose
Oracle Core,  Лекция 3-2
 
01:34:13
Ссылка на файл с презентацией: https://docs.google.com/presentation/d/1PzGVjjsR2lSlr5EXFzmbIpVN4RMGBkjwU_De6FQyxVI/edit?usp=sharing (презентация может быть с анимацией) Ссылка на краткий конспект лекции: https://docs.google.com/document/d/1x7-BCc_2Z83vSGjcFZiWGGdtVoRm1AJLRnxp-lXtchU/edit?usp=sharing 1. Таблица DUAL 2. Конструкция WITH. Рекурсивные запросы с конструкцией WITH 3. Иерархические запросы (self joins): START WITH, CONNECT BY, PRIOR, NOCYCLE, ORDER SIBLINGS BY, LEVEL, CONNECT_BY_ISCYCLE, CONNECT_BY_ISLEAF, SYS_CONNECT_BY_PATH, CONNECT_BY_ROOT 4. Псевдостолбцы (pseudocomlumns). 4.1 ORA_ROWSCN (SCN_TO_TIMESTAMP, TIMESTAMP_TO_SCN) 4.2 ROWID (DBMS_ROWID) 4.3 ROWNUM 5. Конструкция SAMPLE 6. Конструкция PIVOT 7. Конструкция UNPIVOT 8. Оператор INSERT INTO SINGLE TABLE 9. Оператор INSERT INTO MULTITABLE: INSERT ALL, INSERT FIRST 10. Оператор UPDATE 11. Оператор DELETE 12. Оператор MERGE 13. Обновляемая VIEW (KEY-PRESERVED TABLE) 14. SQL FUNCTIONS: SYSDATE, EXTRACT, ADD_MONTH, MONTH_BETWEEN, UPPER/LOWER, LENGTH, SUBSTR, INSTR, REPLACE, LTRIM/RTRIM/TRIM, LPAD/RPAD, TO_CHAR, TO_NUMBER, TO_DATE, POWER, ABS, ROUND, CEIL/FLOOR, USER, TRUNC, GREATEST/LEAST Oracle Database, БД Oracle, вебинар Oracle, презентация Oracle, урок Oracle, лекция Oracle, обучение Oracle
SQL Magic Trick: Invisible Columns  with Chris Saxon
 
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So many new features in Oracle Database 12c allow DBAs and Developers to work magic... Watch this SQL Magic Trick with Chris Saxon, Oracle SQL Developer advocate and member of the AskTOM team
Views: 195 Oracle Developers
part 18 drop tablespace
 
02:38
tablespace, data warehousing,segment
How to Merge unallocated space into partition directly
 
02:31
Partition Assistant could help you merge unallocated space in any exsiting partition inorder to increase partition size, more details infro please refer to http://www.extend-partition.com
Views: 511211 Tool Aomei
Extend Ubuntu Disk Volume with GParted after Resizing Hard Drive
 
12:26
After using a Virtual Machine Manager such as Oracle's VBoxManage in VirtualBox to resize a hard drive, the virtual machine's hard drive partition has not increased in size This video demonstrates how to extend the primary partition of a virtual disk drive using GParted to allow an Ubuntu Desktop virtual machine guest to fully use the increased hard drive size. To resize a virtual hard drive in VirtualBox see "VirtualBox Resize a Hard Drive" on the e-wrench channel
Views: 176701 babarehner
part12 sql same col name in dim and measures
 
02:02
sql model clause, same column name in dimension and measures, data warehousing, dimension by, measures,oracle 10g

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