If you don’t want to remove duplicate data, or if you’re sure that there will be no duplicates in the result set, then you can use ALL instead of DISTINCT. But ALL is the default keyword in SQL statements, so
the result is a non-binary string. On the other hand, concatenating binary strings results in a binary string. A numeric argument is converted to its equivalent nonbinary string form.
Introduction to MySQL INSTR() Function INSTR() MySQL function is defined as an SQL utility that provides the position of the first occurrence of a substring in the main string as the result when executed in the MySQL server. Typically, this INSTR() function is responsible for displaying the p...
Thesucommand executes a command under a different user's identity. It is the easiest way to switch to a different user or the root account in the current logged-in session. The su command functions are: Checking accounts.suensures the user account exists and is set up forsuuse. It also ...
There are really two parts to this. The first is: why should you use SQL to analyze your large datasets? It’s designed for the complicated confusing queries that Excel is bad/slow at. Lots of organizations will store their business data in SQL databases. Being able to work in SQL is...
When I connect to SQL Server to call a SP in a web page, then I can see there is a process in SQL Server. Even the calling is done, the process still be there for a few minutes.But if recompile the code in VS2005, all processes on SQL server caused by the code will be gone...
Even cubes are built based on relational tables, it's hard to convert a MDX query to T-SQL query and get the same result. However, we can only use linked server to get the result set from MDX query in T-SQL. Please see:How to perform a SQL Server distributed query with OLAP Server...
The C++ standard, like any other feature in C++, doesn't say anything about how exception handling should be implemented. This means that every vendor is free to use any implementation as he sees fit. I will describe how VC++ implements this feature, but it should be a good study material...
value_in if the function to test on null values. The value_in field can have a datatype char, varchar2, date or number datatype. replace_with is the value that is returned if value_in has a null value. The NVL statement works like this pl/sql code:...
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