Consider the below five queries joined using UNION operator.The final combined result set contains value from all the SQLs. Note the duplication removal and sorting of data.SELECT 1 NUM FROM DUAL UNION SELECT 5
Consider the below five queries joined using UNION operator.The final combined result set contains value from all the SQLs. Note the duplication removal and sorting of data.SELECT 1 NUM FROM DUAL UNION SELECT 5 FROM DUAL UNION SELECT 3 FROM DUAL UNION SELECT 6 FROM DUAL UNION SELECT 3 FROM...
Start a SQL *Plus session. SelectStart >Programs > Oracle-OraDB10g_home>Application Development>SQL Plus. (Note: This tutorial assumes you have anc:\wkdirfolder. If you do not, you will need to create one and unzip the contents ofmodel_clause.zipinto this folder. While executing the script...
Using the OR operator - SQL ServerThe statement is simply about optimization, something called "sho...
SQL Exercise, Practice and Solution: Find the details of all salespeople except those whose names begin with any letter between 'A' and 'L' (not inclusive). Return salesman_id, name, city, commission.
1.2.14SQL Functions Oracle Database Lite does not support trigonometric functions,SOUNDEX, or bit operations. 1.2.15Locking and Transactions Oracle Database Lite begins a transaction with the first use ofSELECT. In some isolation levels, the use of aSELECTon one connection can lock out anUPDATE...
Syntax for theUNPIVOToperator. syntaxsql SELECT[<non-pivoted column>[AS<column name>] , ] ... [[AS<column name>] , ] [<new output column created for values in result of the source query>[AS<column name>] ]FROM(<SELECT query that produces the data>)AS<alias for the source query...
Syntax for the UNPIVOT operator. syntaxsql Copy SELECT [ <non-pivoted column> [ AS <column name> ] , ] ... [ [ AS <column name> ] , ] [ <new output column created for values in result of the source query> [ AS <column name> ] ] FROM ( <SELECT query that produces the d...
dbms_output.put_line('Output buffer not long enough.'); END; / Example 8-2 Simple PL/SQL Function The following example shows a numeric function that declares a local variable to hold temporary results, and returns a value when finished: ...
To increase thePrice, you would use the+operator in the update expression. Appending elements to a list You can add elements to the end of a list. To do this, useSETwith thelist_appendfunction. (The function name is case sensitive.) Thelist_appendfunction is specific to theSETaction and...