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Java validating column length before inserting into the database

By : Scott
Date : September 15 2020, 04:00 AM
wish helps you First of all: performance shouldn't be your primary concern. You have a list with N entries, and when you want to check the string length for each of the N entries, hey: you have to iterate the N entries, and look at each one. Of course, you could theoretically do that in parallel, which, given "enough" data to work with, makes things quicker, at the cost of more CPU power being used.
The real problem: you start to implement "extra validation", instead of relying on your annotations. In other words: you are working "around" your framework. That is rarely a good idea.
code :

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Validating data before inserting into database

By : Simon Sin
Date : March 29 2020, 07:55 AM
will be helpful for those in need
Is there any framework or easy way to validate data before SQL INSERT or UPDATE operations?

Validating Date (Leap year or not) before inserting into Database

By : Patrick Brandt
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , When I need to insert date into the database I need to check 2 things:
code :
DateTime temp;
if (DateTime.TryParse(yourString, out temp))
    //valid, use temp to insert into DB.
    //not valid.

DB2 column constraint for inserting values within restricted length

By : Iain Todd
Date : March 29 2020, 07:55 AM
this one helps. A constraint isn't going to be able to do this.
A before insert trigger is normally the mechanism you'd use to modify data during an insert before it is actually placed in the table.

Validating field length by making use of Jooq and JPA's @Column annotation

By : Shikha Sharma
Date : March 29 2020, 07:55 AM
To fix the issue you can do Assuming you only have one generated schema (e.g. PUBLIC), you can access tables from there:
code :
Table<?> table = PUBLIC.getTable(tableName);

Right way of validating xlsx files before database inserting

By : Dayan Ramly Ramadhan
Date : March 29 2020, 07:55 AM
This might help you This really depends on the scale of your application and how frequently this Excel file will be imported. For example, if your application receives little to no traffic then running several queries per line is not the end of the world. If you already have the server and database setup and running then you might as well make use of them. Conversely, if your application is under constant heavy load then trying to minimize the amount of queries you run may be a good idea.
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