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How to convert all tables from MyISAM into InnoDB?
...t your database here first
//
// Actual code starts here
$sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = 'your_database_name'
AND ENGINE = 'MyISAM'";
$rs = mysql_query($sql);
while($row = mysql_fetch_array($rs))
{
...
What is the equivalent of 'describe table' in SQL Server?
I have a SQL Server database and I want to know what columns and types it has. I'd prefer to do this through a query rather than using a GUI like Enterprise Manager. Is there a way to do this?
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Counting DISTINCT over multiple columns
... Excellent suggestion! The more I read, the more I am realizing that SQL is less about knowing syntax and functions and more about applying pure logic.. I wish I had 2 upvotes!
– tumchaaditya
Oct 4 '13 at 22:48
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Ruby: Can I write multi-line string with no concatenation?
...ere's a version using funny HEREDOC syntax (via this link):
p <<END_SQL.gsub(/\s+/, " ").strip
SELECT * FROM users
ORDER BY users.id DESC
END_SQL
# >> "SELECT * FROM users ORDER BY users.id DESC"
The latter would mostly be for situations that required more flexibility in ...
Select top 10 records for each category
...
If you are using SQL 2005 you can do something like this...
SELECT rs.Field1,rs.Field2
FROM (
SELECT Field1,Field2, Rank()
over (Partition BY Section
ORDER BY RankCriteria DESC ) AS Rank
FROM t...
SQL Server Profiler - How to filter trace to only display events from one database?
How do I limit a SQL Server Profiler trace to a specific database? I can't see how to filter the trace to not see events for all databases on the instance I connect to.
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Is it possible to for SQL Output clause to return a column not being inserted?
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Maybe someone who uses MS SQL Server 2005 or lower will find this answer useful.
MERGE will work only for SQL Server 2008 or higher.
For rest I found another workaround which will give you ability to create kind of mapping tables.
Here's how Resol...
Is there a ternary conditional operator in T-SQL?
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In SQL Server 2012, you could use the IIF function:
SELECT *
FROM table
WHERE isExternal = IIF(@type = 2, 1, 0)
Also note: in T-SQL, the assignment (and comparison) operator is just = (and not == - that's C#)
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Oracle SQL, concatenate multiple columns + add text
...ch for this answer. I like the '||' as it makes it easier to maintain the SQL query.
– Jason TEPOORTEN
Oct 25 '12 at 0:56
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IndexOf function in T-SQL
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