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  • What does lt; gt; (angle brackets) mean in MS-SQL Server?
    <> operator means not equal to in MS SQL It compares two expressions (a comparison operator) When you compare nonnull expressions, the result is TRUE if the left operand is not equal to the right operand; otherwise, the result is FALSE
  • database - Does more data mean slower queries? - Stack Overflow
    Also, if more data is frequently requested from the database system, then it is less likely that the data you are trying to access in cached in RAM and must be read from the hard disc But these differences should not be very significant for modifying queries Fetching Reading will certainly be slower though
  • css - What do these media queries mean? - Stack Overflow
    Anyway, the media query says that the style should be applied to screens with a 1 5 device pixel ratio, and also to screens with 144dpi larger than 38em Since your iPhone does have the high device pixel ratio, that rule applies, and the browser doesn't mind about the last rule –
  • sql - What does parsing a query mean? - Stack Overflow
    Plan optimize means figure out the best way (of all the possible ways) to determine the result, usually with respect to execution time It could also mean minimizing the number of locks needed Maybe some parts of the query can be ignored (where and 1 == 1) or a table doesn't need to be accessed at all, etc
  • What does the data in MSysQueries mean? - Stack Overflow
    The rows with attribute 2 (there could be multiple) are each formal parameter of the query The Flag column indicates the data type (i e "10" for dbText) and the Name1 column indicates the name of the parameter If there are no rows with attribute 2, then the query does not have formal parameters
  • What does it mean when I say Prepared statement is pre-compiled?
    The compilation phase can require some effort, particularly to find the best optimizations for the execution path (what indexes to use, what join methods, and so on) For simple queries, this can add overhead For more complex queries, the overhead is usually much less than the effort to actually run the queries
  • What does AS followed by some queries mean at SQL?
    I know AS is used to create an alias name in SQL I know with is used if you want to save results of intermediate query or create a temp table For example, something like the following: with new_t
  • What is the difference between screen and only screen in media queries?
    In other words, it should apply the style rules to all screen devices, even though it doesn't know what the media queries mean Unfortunately, IE 6–8 failed to implement the specification correctly Instead of applying the styles to all screen devices, it ignores the style sheet altogether


















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