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Search results “Oracle nls views” for the 2018
Using the NLS_LANG Environment Variable in Oracle Database
 
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Kim Berg Hansen, senior developer with Trivadis and an Oracle ACE Director, shares a tip about the proper use of the Oracle Database NLS_LANG environment variable. https://developer.oracle.com/ https://cloud.oracle.com/en_US/tryit
Views: 363 Oracle Developers
Custom date time format in Oracle SQL Developer?
 
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From Oracle SQL Developer's menu go to Tools -- Preferences. From the Preferences dialog, select Database -- NLS from the left panel. From the list of NLS parameters, enter DD-MON-RR HH24:MI:SS or for 24-Hour, DD-MON-YY HH24:MI:SS Or just for an active session use below instead. alter SESSION set NLS_DATE_FORMAT = 'required_date_format' i.e. alter SESSION set NLS_DATE_FORMAT = 'DD-MM-YYYY HH24:MI:SS' into the Date Format field. Save and close the dialog.
Views: 1019 Maruti AIR Tech
Session6 Data type in Oracle
 
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Session 6: Datatypes In Oracle   ALPHABET           : A-Z , a-z NUMBER              : 0-9 (with precision and scale) DATE / Temporal  : any Date and time (Hours, Minutes, Seconds, Mili-seconds, Timestamp, Timezone etc)   Alphabet + Number = Alphanumeric Data                                     = String / CHARACTER Datatype Category Number                    =  Numeric Datatype Category Date                         = Date Datatype Category 1. CHARACTER Datatype: CHAR, VARCHAR, NCHAR: CHAR is fixed length datatype and VARCHAR is Variable length datatype to store character data. i.e. A-Z , a-z , 0-9 , all keyboard characters etc. The default size is 1 character and it can store maximum up to 2000 bytes. Example : EName, EmpID, PassportNo, SSN, etc. EName CHAR(10) := ‘TOM’; wastage of 7 space after the string EName VARCHAR(10) := ‘TOM’; Spaces can be Reuse which left after the string NCHAR additionally handles NLS(National Language Support). Oracle supports a reliable Unicode datatype through NCHAR , NVARCHAR2 , and NCLOB  VARCHAR2, NVARCHAR2: These are Variable length datatype. VARCHAR2 handles alphanumeric character string whereas NVARCHAR2 handles alphanumeric character string with NLS(National Language Support). The default size is 1 character and it can store maximum up to 4000 bytes.   LONG:  Variable length string.  (Maximum size: 2 GB - 1) Only one LONG column is allowed per table. RAW:    Variable length binary string (Maximum size 2000 bytes) LONG RAW: Variable length binary string (Maximum size 2GB) 2. NUMERIC Datatype: NUMBER: It stores Numeric values and performs numeric calculations. NUMBER,   NUMBER(n),   NUMBER(p,s) It stores Numbers up to 38 digits of precision. SeqNo NUMBER;                     1, 123, 12345678 EmpID NUMBER(4);                 1, 123, 1234 Sal NUMBER(7,2);                     23456.78 , 123.45 — correction in video: Sal NUMBER(a7,2); which is wrong please ignore. 1234567 can be a type of NUMBER, NUMBER(7), NUMBER(7,0) It can store both integer and floating point numbers NUMERIC(p,s) FLOAT:   Ex:  EmpSal FLOAT;    FLOAT(7)       Decimal Points allowed DEC(p,s), DECIMAL(p,s) , REAL, DOUBLE PRECISION INTEGER:   Ex:  SSN INTEGER;       Decimal Points are not allowed INT, SMALLINT 3. DATE Datatype: DATE: It stores DATE(Date, Month, Year) and Time(Hour, Minute, Second, AM/PM) and performs calculations with such data. Default DATE format in Oracle is “DD-MON-YY” Based on "Gregorian calendar" where the date ranges from “JAN 1 4712 BC” to “DEC 31 9999 AD” doj DATE;    “18-MAR-2010 12:30:00 PM” TIMESTAMP:    It can store all parameters as DATE datatype and additionally it can have “Fraction of seconds” and TIMESTAMP WITH TIMEZONE / TIMESTAMP WITHOUT TIMEZONE. Range from 0-9 digits, the default size is 6. 4. LOB Datatype: LOB: “Large Object” data. It can store pictures, motion pictures, Textfiles etc. CLOB: “Character Large Object” is used to store structured information like a text file with a specific file format. BLOB: “Binary Large Object” is used to store Un-structured information like Image, JPEG files, MPEG files etc. BFILE: “Binary File” is used to store the pointer to a specific file / Just store the location of a file. Maximum size: (4 GB - 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB) Extra Information: NCLOB : It supports all the character set supported by CLOB and additionally it handles NLS(National Language Support ) Maximum size: (4 GB - 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB) ROWID and UROWID(optional size) Datatype: contains fixed length Binary data. BBBBBBB.RRRR.FFFFF combination of BLOCK-ROW-DATABASE FILE Physical and Logical ROWID Upcoming Session: Session 7: Populating Data into Tables(INSERT Statement): Inserting data into all columns of a table Inserting data into Required columns of a table Inserting NULL value into a table Inserting Special Values(USER / SYSDATE) into a table Supplying data at runtime(using & and &&) THANK YOU :)
Views: 292 Prabhat Sahu
Oracle FROM_TZ Function
 
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https://www.databasestar.com/oracle-timezone-functions/ The Oracle FROM_TZ function is used to convert a value in a TIMESTAMP data type, and a specific TIME ZONE, to a TIMESTAMP WITH TIME ZONE value. It’s a helpful conversion function if you work with times and time zones a lot. The syntax of the FROM_TZ function is: FROM_TZ ( timestamp_value, timezone_value ) The parameters of this function are: - timestamp_value: the value in a TIMESTAMP format to convert. - timezone_value: this is the timezone value that the timestamp_value will be converted in to. If you want to know what values can be used as a timezone value, you can look in the database view here: SELECT * FROM v$timezone_names; For more information about the Oracle FROM_TZ function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-timezone-functions/
Views: 91 Database Star
Roman Reigns is brutally ambushed by Brock Lesnar: Raw, March 19, 2018
 
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After Roman Reigns violated his suspension and was taken into custody for trespassing, The Beast Incarnate eviscerated his WrestleMania opponent. Get your first month of WWE Network for FREE: http://wwenetwork.com Subscribe to WWE on YouTube: http://bit.ly/1i64OdT Visit WWE.com: http://goo.gl/akf0J4 Must-See WWE videos on YouTube: https://goo.gl/QmhBof
Views: 10473126 WWE
(오라클인덱스에서 데이터 스캐닝을 위한 힌트)order by의 잘못된 사용으로 인한 테이블  FULL SCAN은 최악의 상황을 만들죠^^ Index Access Path 관련 힌트
 
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DB에서 인덱스를 잘다루시면 성능향상에 짱이죠^^ order by등의 잘못된 사용으로 인한 테이블 FULL SCAN은 최악의 상황을 만들죠^^ Index Access Path 관련 힌트,인덱스에서 데이터 스캐닝을 위한 힌트, INDEX SKIP SCAN INDEX_SS, NO_INDEX_SS INDEX_SS_ASC, INDEX_SS_DESC INDEX_RS, INDEX_FFS
Views: 120 이종철

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