Forwarded from Mohsen Bandamir
Mohsen Bandamir, [۰۳.۰۱.۱۶ ۱۵:۱۰]
ده اشتباه رایج در اس کیوال:
1. NULLs and the NOT IN predicate
2. Functions on indexed columns in predicates
3. Incorrect subquery column
4. Data type mismatch in predicates
5. Predicate evaluation order
6. Outer joins and placement of predicates
7. Subqueries that return more than one value
8. Use of SELECT *
9. Scalar user-defined functions
10. Overuse of cursors
ده اشتباه رایج در اس کیوال:
1. NULLs and the NOT IN predicate
2. Functions on indexed columns in predicates
3. Incorrect subquery column
4. Data type mismatch in predicates
5. Predicate evaluation order
6. Outer joins and placement of predicates
7. Subqueries that return more than one value
8. Use of SELECT *
9. Scalar user-defined functions
10. Overuse of cursors
Forwarded from ⭕️ @panachannel
پایگاه تخصصی نرم افزار ایران
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