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Transact-SQL is central to using Microsoft SQL Server. All applications that communicate with an instance of SQL Server do so by sending Transact-SQL statements to the server, regardless of the user interface of the application. Stored procedures in SQL Server are executable server-side routines. The advantage of stored procedures is the ...
If xxx1 is omitted, we get a loop with the test at the top (a traditional while loop). If xxx2 is omitted, we get a loop with the test at the bottom, equivalent to a do while loop in many languages. If while is omitted, we get an infinite loop. The construction here can be thought of as a do loop with the while check in the middle. Hence this ...
The first three are if-else-end, while-end, and evaluate. The fourth is the embedded SQL “select” statement, which allows SQR statements to be executed for each row of data in a loop. SQR has commands to open, read, write, append, and close computer files .
Pascal has two forms of the while loop, while and repeat. While repeats one statement (unless enclosed in a begin-end block) as long as the condition is true. The repeat statement repetitively executes a block of one or more statements through an until statement and continues repeating unless the condition is false. The main difference between ...
In a SQL database query, a correlated subquery (also known as a synchronized subquery) is a subquery (a query nested inside another query) that uses values from the outer query. This can have major impact on performance because the correlated subquery might get recomputed every time for each row of the outer query is processed.
The two children were at Washington Park Lake in Albany at about 4:30 p.m. Saturday when the boy tried to walk across the frozen lake and fell through the ice, Albany police said in a news release.
The side-gig industry is still booming, but not all side gigs are created equal and not all people doing them make enough money to justify the time and effort involved. According to Self, just ...
Avoid the stresses of hosting a holiday party by limiting guest beverage options so you can spend more time focusing on family and friends. Here are 5 tips to help.