SQL | Delta Records in SQL | Difference between two tables using SQL | Delta Record | Using 3 method

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Delta record is the incremental (updated or inserted) load of data that is inserted or updated into a table in the database.

Delta detection compares new data from a source system with the last versions in the data warehouse to find out whether a new version has to be created.

In this video I have written SQL query to compare two tables with the same schema and found the new/modified records when comparing the two tables.

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  2. delta detection in sql
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Комментарии
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Thank you for your explanation. It was very helpful to me.

sharkane
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hi
Your explanation was awesome,
i have one small doubt, can u explain little bit meaning of select 1.

krishnakishore
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Thanks,

If possible will you create a video on how to remove duplicate records from table. Based on primary key column

aniketkatre
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Thanks for the video, if I want to compare in a single table when any row added, display the date added.
For example if yesterday John added on the table I wanna display yesterday's date and keep displaying the date for until it stays.how to achieve it

mohammadmamun
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Which one should be good considering performance on millions of rows?

SurajMishra