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How to find all tables that have foreign keys that reference particular table.column and have values
... name, which is required in some cases (e.g. drop constraint):
SELECT
CONCAT(table_name, '.', column_name) AS 'foreign key',
CONCAT(referenced_table_name, '.', referenced_column_name) AS 'references',
constraint_name AS 'constraint name'
FROM
information_schema.key_column_usage
WHER...
How to use a servlet filter in Java to change an incoming servlet request url?
...h.
Use straightforward java.lang.String methods like substring(), split(), concat() and so on to extract the part of interest and compose the new path.
Use either ServletRequest#getRequestDispatcher() and then RequestDispatcher#forward() to forward the request/response to the new URL (server-side re...
How to Concatenate Numbers and Strings to Format Numbers in T-SQL?
...You need to explicitly convert your parameters to VARCHAR before trying to concatenate them. When SQL Server sees @my_int + 'X' it thinks you're trying to add the number "X" to @my_int and it can't do that. Instead try:
SET @ActualWeightDIMS =
CAST(@Actual_Dims_Lenght AS VARCHAR(16)) + 'x' +
...
ASP.NET MVC Razor Concatenation
...
I prefer:
<li id="@String.Concat("item_", item.TheItemId)">
The verbosity tells the support developers exactly what is happening, so it's clear and easy to understand.
sh...
How do I see all foreign keys to a table or column?
...t name, which is required in some cases (e.g. drop contraint):
select
concat(table_name, '.', column_name) as 'foreign key',
concat(referenced_table_name, '.', referenced_column_name) as 'references',
constraint_name as 'constraint name'
from
information_schema.key_column_usage
wher...
Optimal way to concatenate/aggregate strings
...
SOLUTION
The definition of optimal can vary, but here's how to concatenate strings from different rows using regular Transact SQL, which should work fine in Azure.
;WITH Partitioned AS
(
SELECT
ID,
Name,
ROW_NUMBER() OVER (PARTITION BY ID ORDER BY Name) AS N...
Get table column names in MySQL?
...
How about this:
SELECT @cCommand := GROUP_CONCAT( COLUMN_NAME ORDER BY column_name SEPARATOR ',\n')
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table';
SET @cCommand = CONCAT( 'SELECT ', @cCommand, ' from my_database.my_t...
Strangest language feature
...
+ for string concatenation is horrible
– Matteo Riva
Jan 3 '10 at 16:42
416
...
Rails 4 LIKE query - ActiveRecord adds quotes
...xpose you to SQL-injection (which is bad). I would suggest you use the SQL CONCAT() function to prepare the string like so:
"name LIKE CONCAT('%',?,'%') OR postal_code LIKE CONCAT('%',?,'%')", search, search)
share
...
SQL WHERE.. IN clause multiple columns
...and always will come from T1)
No DISTINCT or DISTINCT in the wrong place
CONCATENATION OF COLUMNS WITH SEPARATOR (Not very safe, horrible performance)
The functional problem is that if you use a separator which might occur in a column, it gets tricky to ensure that the outcome is 100% accurate. T...