Questions tagged [exists]
The exists tag has no usage guidance.
10
questions with no upvoted or accepted answers
3
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166
views
"FOR UPDATE" in an "EXISTS SELECT" statement
Is there any potential problem in using (in a transaction)
SELECT EXISTS( SELECT * FROM mytable WHERE id=36 FOR UPDATE )
i.e. having SELECT ... FOR UPDATE within an EXISTS?
MySQL does certainly ...
- 463
1
vote
1
answer
308
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Inconsistent results with MySQL, query never ends on MariaDB
We have some really strange behaviour on MySQL (8.0.29) that we can't explain.
We have 2 tables + 1 link table in-between, illustrated by this schema :
We run a query whereby we need to fetch the id ...
- 107
1
vote
1
answer
122
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Weird error on creating table and selecting rows from table
I have db and I am trying to create table called "sales_invoice_grid"
I am having bellow scenarios:
error 1: while creating the table "sales_invoice_grid" manually, it gives the message that it ...
- 111
0
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0
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26
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IF EXISTS doesn't stop errors on RDS Postgres 11.19 instance
Recently one of our RDS Postgres databases was upgraded to version 11.19. Since then, we're receiving errors when running a database migration.
I can't replicate this issue locally, it appears to be ...
0
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2
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33
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I have a database with a player, tournament, and registration table. I need to query all players that played in 2 types (attributes) of tournaments
I currently have two tournaments that have matches. Wimbledon and Atlanta open which I have one as a grand slam and the other as a masters 1000, and I want to get the players who played in both
This ...
0
votes
1
answer
477
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Select only those records that have same multiple values for a particular column if it's existing?
Below is an example of my pricing_supports table have more than 3 milions rows.
There some rows having same values in the first_origin_id, delivery_id fields.
If there're records with same ...
0
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0
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61
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Executing IF Exists condition
I have a sproc that scripts out permissions and in the process, I add a check to see if the object exists before dumping the results into a table. Then, I have another re-assign permissions sproc that ...
- 73
0
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2
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3k
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Select Data from two tables ONLY IF ID on both tables are SAME
I need to select returns result
SELECT wl.id FROM wishlist AS wl
LEFT JOIN wishlist_products AS wp ON wl.id = wp.wishlist_id
Only IF ALL of wp.product_id EXISTS in wishlist_products_bought....
-1
votes
1
answer
37
views
How to check existence of a value in between two columns of the same table
I have a table bills having columns id, starting_bl_no, ending_bl_no.
How can I check a new bill number input is already exist in the table?
id starting_bl_no ending_bl_no
1 100 ...
-1
votes
2
answers
111
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MYSQL get rows not axisting in other table
I have two tables with 1 identical data column for comparison.
One table "species" is a wide list of species and each data row has one unique id called "suid" add. to its primary ...
- 1