rese | php sessions in a more readable way | Hacking library
kandi X-RAY | rese Summary
kandi X-RAY | rese Summary
Extracted from [vume] framework.
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Top functions reviewed by kandi - BETA
- Check if an array exists
- Get session .
- Remove key from array
- Destroys the current session .
- Get message .
- Returns true if the reference is equal to the given value .
- Create deep session .
- Set the reference .
- Remove session key
- Deletes the collection .
rese Key Features
rese Examples and Code Snippets
Community Discussions
Trending Discussions on rese
QUESTION
I need to TRUNCATE
or DELETE
all tables in schema.
I found this code:
...ANSWER
Answered 2022-Feb-04 at 03:46You simply need to wrap your "delete from all the tables" script with a "drop all foreign keys" script at the beginning, and "re-create all foreign keys" script at the end. I show one way to do that here:
However, I would argue that it is much cleaner to just script out the database and empty objects from source control than spend all this time and effort deleting data from one table at a time.
Anyway an attempt at what you're doing (if you truncate you don't also need to checkident, I'm not sure I would ever use undocumented and unsupported procedures like sp_msforeachtable
, and I also stay the heck away from INFORMATION_SCHEMA
). Please try this on a test database.
QUESTION
In Laravel how would you reseed a database? Without losing existing data / migrations?
I have a RoleAndPermissionSeeder.php with Spatie's Permission package:
...ANSWER
Answered 2022-Feb-02 at 16:27If your seeder class has firstOrCreate
instead of create
QUESTION
I am trying to write a stored procedure to search through text fields of a table as follows:
TABLE: [User]
...ANSWER
Answered 2021-Nov-28 at 23:42Question 1
I think the problem is around the OR
predicates inside the parenthesis in each condition, I believe it should be an AND
predicate like shown below:
QUESTION
I am converting an async.auto flow to async await code. To simplify my question say I have a set of tasks and a list of dependencies of these tasks on each other how can I convert this to async await code. Here is an example I feel which will cover all the cases(correct me if it does not).
Set of tasks - a(), b(), c(), f(), d(resultOfA, resultOfB), e(resultOfB, resultOfC), g(resultOfF, resultOfE) Here to execute d we need values returned from a and b, and to execute e we need those of b and c, for g we need e and f.
Note that I want to complete all the tasks as early as possible
Edit: Adding a sample async auto flow which I need to convert
...ANSWER
Answered 2021-Oct-12 at 17:08Promises only complete once.
QUESTION
Below is my data in text file
...ANSWER
Answered 2021-Oct-04 at 10:23Use the line below the header ( ---------- --- -----------...
) to detect at which offsets to parse data for a specific column name:
QUESTION
I have a cursor in order to separate rows based on a required quantity for each item, this works kind of fine, with the exception that it doesn't return the first rows and instead, if the row for example has a value of quantity 3, it adds it to the last row. My code is the following:
...ANSWER
Answered 2021-Sep-23 at 18:23The problem is that you fetch a row just after you open the cursor, but don't do anything with the fetched values. So you end up missing the first row. To correct that, reorganize your code this way:
QUESTION
I have a Table called Person
, this table is non-empty and it's filled with records ( more than 1000 rows )
How can I reset the identity seed of this table?
Id PersonName 154 Alice 155 JohnThe query was executed, but the table still has the identity
...ANSWER
Answered 2021-Sep-16 at 11:41The problem is your understanding; the code is very likely working exactly as it is supposed to, and as I demonstrated.. RESEED
resets the value of the next IDENTITY
generated, it doesn't change any of the existing values.
Take SQL similar to what I gave in the comments:
QUESTION
Consider the following T-SQL code (the code is available along with an ADO.NET version in this GitHub repo https://github.com/PaloMraz/SqlServerReseedSampleApp):
...ANSWER
Answered 2021-Jul-12 at 15:12The only real question here is why DBCC CHECKIDENT ... RESEED can be rolled back. With IDENTITY INSERT or not inserting into a table with an IDENTITY column will increment the current identity value without blocking other sessions' ability to generate new IDENTITY values. To do this, the modification of the current IDENTITY value must not be enlisted in the session's transaction.
DBCC CHECKIDENT is effectively a DDL statement, like ALTER TABLE. It requires an exclusive metadata lock on the object, and therefore can be committed or rolled back. EG
QUESTION
If I insert and then delete a large number of rows from a table, queries running on the table become very slow. The table does not have a index but creating one solves the problem. But what I do not understand is why did the performance degrade in the first place. I have also tried to update the statistics on the table after the delete but that does not improve the performance. Any thoughts?
Here is the setup:
...ANSWER
Answered 2021-Jul-08 at 21:19The difference is due to the logical reads performed on MAvg
.
Initially, the IO statistics for the table are
QUESTION
Could a seed from java.util.Random
for java.security.SecureRandom
weaken the cryptographically strong random number generator?
I saw this code and wonder why this is done in that specific way.
...ANSWER
Answered 2021-May-27 at 14:12When using a CSPRNG, the cryptographic strength is the same as the bit-strength of the entropy used to seed it.
A CSPRNG will churn out a practically infinite amount of pseudorandom entropy, though in reality the actual strength of that pseudorandom entropy is only as strong as the entropy of the underlying seed state of the the CSPRNG.
Thus, if you were to use ONLY a seed from java.util.Random
you'd be in trouble.
Thankfully, the kernel and other sources are used to seed the system CSPRNG that java.security.SecureRandom
uses, and thus "adding"/mixing into this as shown in your example code above, can't make it "less" random or decrease entropy.
So:
- Yes,
java.util.Random
seeds are worthless. - This is OK though because the system has already seeded the CSPRNG from hardware interrupts, boot jitter and other noise.
- Whoever wrote this:
randomGenerator.setSeed(rnd.nextLong());
shouldn't be involved with cryptographic engineering.
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PHP 5.3+
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