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What is SYSNAME data type in SQL Server?
... be honest. It is mainly used by Microsoft when building the internal sys tables and stored procedures etc within SQL Server.
For example, by executing Exec sp_help 'sys.tables' you will see that the column name is defined as sysname this is because the value of this is actually an object in itsel...
Is 'switch' faster than 'if'?
...ons a compiler can make on a switch. I don't think the oft-mentioned "jump-table" is a very useful one though, as it only works when the input can be bounded some way.
C Pseudocode for a "jump table" would be something like this -- note that the compiler in practice would need to insert some form o...
What's the difference between a catalog and a schema in a relational database?
...if you query the information_schema views, you'll find that values in the "table_catalog" column map to the name of a database.
If you find your platform using catalog in a broader way than any of these three definitions, it might be referring to something broader than a database--a database cl...
How to remove a lua table entry by its key?
I have a lua table that I use as a hashmap, ie with string keys :
1 Answer
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CSS - Expand float child DIV height to parent's height
... & best solution and very flexible - but unsupported by IE9 and older.
table or display: table: very simple, very compatible (pretty much every browser ever), quite flexible.
display: inline-block; width:50% with a negative margin hack: quite simple, but column-bottom borders are a little trick...
sql server invalid object name - but tables are listed in SSMS tables list
.... However the SSMS intellisense does not recognize more than half of the tables which have been created.
16 Answers
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Only read selected columns
...hs (7 columns) for each year of the data below, for example by using read.table() ?
4 Answers
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Update multiple columns in SQL
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Try this:
UPDATE table1
SET a = t2.a, b = t2.b, .......
FROM table2 t2
WHERE table1.id = t2.id
That should work in most SQL dialects, excluding Oracle.
And yes - it's a lot of typing - it's the way SQL does this.
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FIND_IN_SET() vs IN()
I have 2 tables in my database. One is for orders, and one is for companies.
6 Answers
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Import CSV to SQLite
I'm trying to import a csv file to an SQLite table.
10 Answers
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