Array data type in SQL server Array's IN SQL SERVER? ASCII values for extended characters Assign empty string '' if datetime is null Assign EXEC output to Variable Assigning NULL value to column name using Case Statement of where is SQL SERVER 2008 atomic if not exists() and insert or upd...
"Using a PL/SQL Function in the WITH Clause: Examples" subquery_factoring_clause The subquery_factoring_clause lets you assign a name (query_name) to a subquery block. You can then reference the subquery block multiple places in the query by specifying query_name. Oracle Database optimizes...
string ConnectString = "server=localhost;database=pubs;integrated security=SSPI"; string QueryString = "select * from authors"; SqlConnection myConnection = new SqlConnection(ConnectString); SqlDataAdapter myCommand = new SqlDataAdapter(QueryString, myConnection); // Create a dataset to store the que...
This clause implements SQL-driven Flashback, which lets you specify a different system change number or timestamp for each object in the select list. You can also implement session-level Flashback using theDBMS_FLASHBACKpackage. A Flashback Query lets you retrieve a history of changes made to ...
whether a specific character string matches a specified pattern. In the example below, we retrieve all of the rows from the Customer table that contains the word ‘Bike’ anywhere in the ‘CompanyName’ column. Here, we need to use the% wildcard characterboth before and after the word ‘...
matches the regular expression or simple string. To begin my task, I simply wanted to get every line containing the IP address of the employee's desktop computer. Each log file line contained a date and a time stamp, which is all the folks in the Human Resources department were after. ...
Each log file line contained a date and a time stamp, which is all the folks in the Human Resources department were after. Here's the command: Copy select-string -path c:\logs\*.txt -pattern "192.168.17.54" -allmatches –simplematch The –simpleMatch parameter specifies that the ...
SELECT1+1;Code language:SQL (Structured Query Language)(sql) This example shows you how to combine a string function namedCONCAT(), which joins two or more strings into one, to display the employee’s full name: SELECTCONCAT(LastName,', ',FirstName)ASfullnameFROMemployeesCode language:SQL ...
=, or <> operators, or LIKE comparisons if the argument to LIKE is a constant string that does not start with a wildcard【ˈwaɪldˌkɑrd (用于代替任何字符或字符串的)通配符;】 character. • For all index types, multiple range conditions combined with OR or AND form a range ...
a >= 14457" > sqldf(s) a b 1 2009-08-01 2 2 2009-08-02 3 3 2009-08-03 4 4 2009-08-04 5 > # to compare against character string store a as character > DF2 <- transform(DF, a = as.character(a)) > sqldf("select * from DF2 where a >= '2009-08-01'") a b 1 ...