sqlcheck | Automatically identify anti-patterns in SQL queries | SQL Database library
kandi X-RAY | sqlcheck Summary
kandi X-RAY | sqlcheck Summary
sqlcheck automatically detects common SQL anti-patterns. Such anti-patterns often slow down queries. Addressing them will, therefore, help accelerate queries. sqlcheck targets all major SQL dialects. For development updates on sqlcheck and general news on next generation database systems, follow me at @joy_arulraj.
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QUESTION
i use the following changeset in liquibase to add a function to an existing database
...ANSWER
Answered 2022-Mar-10 at 15:17I found error. Parameter type was wrong
QUESTION
I'm trying to create a unique key to save information in the database, but for some reason the $randStr variable has nothing at the end. After submitting, I get only a new id and email, nothing appears in the keystring. What's wrong?
Here's my sql table:
...ANSWER
Answered 2020-Dec-28 at 02:18You are not calling generateKey
function. Call this function and store return value to $randStr
before inserting in database.
Note: please see SQL injection prevention for same.
QUESTION
I'm running SQL Server 2019 Always ON Availability Group with an asynchronous replication.
I use a free tool called IDERA SQL Check and I have spotted the SPID 69
which program name is Replication Distribution Agent
. It's always there, staring at me like a bored cat.
This SPID 69
is pointing to a specific database which is mirrored I investigated it with this the query:
ANSWER
Answered 2020-Oct-03 at 02:46This is perfectly normal.
The replication distribution agent is effectively running continuously to scan the transactions on your source to be able to send them to the replicas. Because it needs to capture these and forward them, it has to run continuously.
It is not frying your drive - unless your transaction rate is so high that that is actually frying your drive. It shows high reads in an incremental manner - this is cumulative values and not a snapshot of current. That suggests that it has read the equivalent of 141GB over 20 days - not particularly heavy use.
QUESTION
I have a situation wherein a previous release I had 0 seeded values in a table1
using a liquibase script. My primary key was a sequence in java and the values started from 100000
.
This went on for a couple of releases.
Now, in the subsequent release, there is a sudden need of seeding some (for an instance say 10) values into the table table1
.
As a date migration process, there might be some manually (using the application) inserted values in the table table1
. For the primary keys not to conflict with the already present keys, I plan to start the IDs from 1 to 10 as the sequence starts from 10000 and will never have a value less than 100000.
I have an option of writing an alternate script using two approaches:
Approach 1 code is as follows:
...ANSWER
Answered 2020-Feb-05 at 07:26If you need all 10 rows of data or nothing, and if you are sure that select count(*) from ${schema}.table1 where column_1 >= 1 and column_1 <= 10;
will indeed return 0
, then go with the first approach.
Otherwise, I'd go with the second approach.
I wouldn't worry about checksum errors since you're supposed to make changeSet's ids unique.
Also, in my opinion, the approach, when normally the ID sequence starts from 10000 but in some edge cases (like this one) it starts from 1, is not a very good and reliable one.
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