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You can try using parentheses around the OR expressions to make sure your query is interpreted correctly, or more concisely, use IN: SELECT ads.*, location.county FROM ads LEFT JOIN location ON location.county = ads.county_id WHERE ads.published = 1 AND ads.type = 13 AND ads.county_id IN (2,5,7,9)
8 wrz 2016 · I want to use names selected from a multiple selection listbox, which I can retrieve the values, and then do a where clause so it shows the song names that the selected people can all play, therefore status is complete.
19 lip 2018 · There are many ways to write this type of query. For example, you could use EXISTS to avoid counting in the correlated subquery: select * from table_name t1 where exists (select 1 from table_name t2 where t1.account_id = t2.account_id and t1.id <> t2.id) ; Another method is to use a subquery or CTE and window aggregate:
To filter data by multiple conditions in a WHERE clause, use the AND operator to connect the conditions. Here’s what this looks like for two conditions: WHERE condition1 AND condition2. In our example, condition1 is dept = 'Finance' and condition2 is salary > 4000.
1 lis 2018 · I want to select data where two columns are in a set of pairs. I'd like to avoid using a subquery, if possible.
9 sty 2020 · If you don't want to use the relational model in a relational database (atomic column values, no repeating groups), store the value in a column as JSON or XML. XML will be easier to parse in T-SQL in your older SQL 2012 version. JSON support was introduced in SQL Server 2016, IIRC. – Dan Guzman.
25 sie 2023 · To perform SQL JOIN on multiple columns in the same table use the Self Join. Using Self Join on a table, a connection between columns of the same table can be created. We can implement Self Join on a table using “inner”, “left”, “right”, “full”, or “cartesian” join.
