Sql Oracle lt gt Operators Stack Overflow
Aug 17 2012 nbsp 0183 32 1 sorts memory 0 sorts disk 26 rows processed The execution plan for the three queries is identical and the timings 2 12 2 13 and 2 10 seconds It should be noted that whichever syntax is used in the query the execution plan always displays lt gt The tests were repeated ten times for each operator syntax
Is There Any Difference Between quot quot And quot lt gt quot In Oracle Sql , May 18 2012 nbsp 0183 32 Dems in Oracle boolean is not a first class type in SQL which is different from PL SQL I e you can t SELECT 1 1 FROM dual like in some other systems So booleans have their own set of operators valid only in logical contexts WHERE or HAVING or similar clauses NOT is the only boolean negation operator in Oracle s SQL AFAIK
Oracle Database Meaning Of In SQL Queries Stack Overflow
Feb 5 2009 nbsp 0183 32 IIRC the is used in older versions of Oracle to indicate an outer join in the pre ANSI SQL join syntax In other words select foo bar from a b where a id b id is the equivalent of select foo bar from a left outer join b on a id b id NOTE this may be backwards slightly incorrect as I ve never used the pre ANSI SQL syntax
What Does A Sign Mean In An Oracle SQL WHERE Clause , Jan 29 2014 nbsp 0183 32 According to Oracle s documentation linked to in the answer quot To write a query that performs an outer join of tables A and B and returns all rows from A a left outer join use the LEFT OUTER JOIN syntax in the FROM clause or apply the outer join operator to all columns of B in the join condition in the WHERE clause
Oracle Database What Is The Difference Between Precision And
Oracle Database What Is The Difference Between Precision And , Apr 16 2011 nbsp 0183 32 Precision is the total number of digits can be between 1 and 38 Scale is the number of digits after the decimal point may also be set as negative for rounding And Scale is the number of digits to the right positive or left negative of the decimal point not just after the decimal point Look at koljaTM s example
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What Is The Dual Table In Oracle Stack Overflow
What Is The Dual Table In Oracle Stack Overflow Sep 16 2008 nbsp 0183 32 1 The DUAL is special one row one column table present by default in all Oracle databases The owner of DUAL is SYS DUAL is a table automatically created by Oracle Database along with the data functions It is always used to get the operating systems functions like date time arithmetic expression etc SELECT SYSDATE from dual
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Jul 18 2013 nbsp 0183 32 According to the Oracle docs on types Optionally you can also specify a precision total number of digits and scale number of digits to the right of the decimal point If a precision is not specified the column stores values as given If no scale is specified the scale is zero So in your case a NUMBER 8 2 has got 8 digits in total Number Format In Oracle SQL Stack Overflow. Apr 7 2010 nbsp 0183 32 108 Depending on which side of the quot quot the quot is on it denotes a LEFT OUTER or a RIGHT OUTER join in this case it s a left outer join It s old Oracle syntax that is sometimes preferred by people who learned it first since they like that it makes their code shorter Best not to use it though for readability s sake Oct 4 2011 nbsp 0183 32 I think the meaning of lt gt is more something like has a value which is not equal to In this case it filters out items which have ordid 605 and items which have a null ordid It may be obvious in this context that ordid is never null but it is never hurts to remember that null is not lt gt from 605 or from anything
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