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SQL Programming > Learn SQL Programming > Why could my SQL INNER JOIN query not be working?
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Why could my SQL INNER JOIN query not be working?

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C language Faculty (online Classes )

The simple answer is because the field you're joining on doesn't have matching values in both tables.
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Your SQL `INNER JOIN` query may not be working due to several reasons: 1. **Incorrect Join Condition**: Ensure that the `ON` clause correctly specifies the columns from both tables that should match. 2. **No Matching Rows**: If there are no matching records in the joined tables based on the specified...
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Your SQL `INNER JOIN` query may not be working due to several reasons: 1. **Incorrect Join Condition**: Ensure that the `ON` clause correctly specifies the columns from both tables that should match. 2. **No Matching Rows**: If there are no matching records in the joined tables based on the specified condition, the result will be empty. 3. **Table Aliases**: If you’re using aliases, make sure they are referenced correctly. 4. **Data Type Mismatch**: Ensure that the columns you are joining on have compatible data types. 5. **Syntax Errors**: Check for any typos or syntax errors in your SQL query. 6. **Database Permissions**: Ensure you have the necessary permissions to access the tables involved in the join. To troubleshoot, double-check your join conditions, inspect the data in the tables, and review the query syntax. read less
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My teaching experience 12 years

The simple answer is because the field you're joining on doesn't have matching values in both tables.
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