While there are no hard-and-fast rules on where to indent and add new lines for SQL, I find it beneficial add a new line after the SELECT, FROM, WHERE, GROUP BY, HAVING, and ORDER BY clauses and to indent the contents or specifications of those clauses. A new line followed by ind...
The intuitive approach of using a subquery directly in theWHEREclause, as used in PostgreSQL and SQL Server, doesn’t work with MySQL becauseMySQL doesn’t allow modifying a table and selecting from the same table in a subquery. This is documented in theRestrictions on Subqueriessection of the...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
I am new to subqueries and have managed what I wanted to but I now cannot use the results of that subquery in a calculation in the primary Select statement not the preferred option of in the where clause.Here is the code ( with a couple of attempts).The last line is what I would ...
On occasion I've used: SELECT.. WHERE1 = 0. For example, I may want to select into a temp table that is derived from another table but initially empty. Also, just for the sake of the application, there may be a need to have a stored procedure return an empty resultset with the ...
. See you can find a book on SQL and read how the clauses are executed; in particular, pay attention to the scoping rules. This is one of the tricky parts of the language. My guess is that you might want to do it with something like this:...
I am new to subqueries and have managed what I wanted to but I now cannot use the results of that subquery in a calculation in the primary Select statement not the preferred option of in the where clause.Here is the code ( with a couple of attempts).The last line is what I would ...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
I have to take shortcuts to get the job done, and believe me, I have to chase down inefficient code as well. The consultants we have here have a seemingly obsessive desire to use subqueries in the select statements for their lookups in lieu of joins, and I took an 18 hour query down...