
How do I perform an IF...THEN in an SQL SELECT?
Sep 15, 2008 · Both IIF() and CASE resolve as expressions within a SQL statement and can only be used in well-defined places. The CASE expression cannot be used to control the flow of execution of Transact-SQL statements, statement blocks, …
What does the colon sign ":" do in a SQL query?
May 9, 2017 · What does ":" stand for in a query? A bind variable.Bind variables allow a single SQL statement (whether a query or DML) to be re-used many times, which helps security (by disallowing SQL injection attacks) and performance (by reducing the amount of parsing required).
postgresql - Double colon `::` notation in SQL - Stack Overflow
Jun 23, 2022 · Double-colons are required in SQL Server 2005 when granting permissions on schemas, certificates, endpoints, and a few other securables. As well as... When using User-Defined Types, static methods of the type must be called using the double-colon syntax. Sources: BOL and Kalen Delaney's Blog
sql - NOT IN vs NOT EXISTS - Stack Overflow
May 18, 2007 · In order to filter the student records that have a 10 grade in Math, we can use the EXISTS SQL operator, like this: SELECT id, first_name, last_name FROM student WHERE EXISTS ( SELECT 1 FROM student_grade WHERE student_grade.student_id = student.id AND student_grade.grade = 10 AND student_grade.class_name = 'Math' ) ORDER BY id
What does SQL Select symbol - mean? - Stack Overflow
Apr 29, 2014 · sql server: + (infix operator), concat ( vararg function ) Edit: Now Azure SQL also supports ANSI SQL standard || operator for string concatenation. Docs link . sqlite: || (infix operator)
sql - What is the syntax meaning of RAISERROR () - Stack Overflow
I just created a Instead After Trigger whose syntax is given below: Create trigger tgrInsteadTrigger on copytableto Instead of Insert as Declare @store_name varchar(30); declare @sales in...
What is the use of the square brackets [] in sql statements?
During the dark ages of SQL in the 1990s it was a good practice as the SQL designers were trying to add each word in the dictionary as keyword for endless avalanche of new features and they called it the SQL3 draft. So it keeps forward compatibility.
parsing - How can I fix MySQL error #1064? - Stack Overflow
May 7, 2014 · Again, the parser does not expect to encounter WHERE at this point and so will raise a similar syntax error—but you hadn't intended for that where to be an SQL keyword: you had intended for it to identify a column for updating!
SQL "IF", "BEGIN", "END", "END IF"? - Stack Overflow
IF statements can, by definition, only take a single SQL statement. However, there is a special kind of SQL statement which can contain multiple SQL statements, the BEGIN-END block. If you omit the BEGIN-END block, your SQL will run fine, but it will only execute the first statement as part of the IF. Basically, this:
sql - How to do an INNER JOIN on multiple columns - Stack …
I'm working on a homework project and I'm supposed to perform a database query which finds flights either by the city name or the airport code, but the flights table only contains the airport codes...