|
About the SQL FAQ category
|
|
0
|
1059
|
December 30, 2017
|
|
Is there a shorter way to insert multiple rows in a table?
|
|
33
|
175366
|
May 18, 2023
|
|
Can we alias multiple columns in a single query?
|
|
15
|
70286
|
June 14, 2023
|
|
What are some ways that SQL is used in data science?
|
|
12
|
130085
|
July 25, 2023
|
|
How do we search for patterns containing the actual characters "%" or "_"?
|
|
14
|
50235
|
June 25, 2023
|
|
Can a WHERE clause be applied with a HAVING statement in the same query?
|
|
11
|
30412
|
August 19, 2023
|
|
When should I use INNER JOIN instead of LEFT JOIN?
|
|
27
|
61360
|
August 21, 2023
|
|
Can we add a column at a specific position to a table?
|
|
20
|
73421
|
April 24, 2023
|
|
What happens if tables we perform UNION on have duplicate rows?
|
|
22
|
62620
|
August 21, 2023
|
|
Can we apply DISTINCT to a SELECT query with multiple columns?
|
|
14
|
205960
|
June 26, 2023
|
|
What are some reasons to apply constraints to a table?
|
|
21
|
47289
|
May 4, 2023
|
|
Does the order of tables in a JOIN matter?
|
|
9
|
36137
|
February 6, 2022
|
|
How can we get the average of unique values of a column?
|
|
16
|
37288
|
July 31, 2023
|
|
How is ALTER different from UPDATE?
|
|
17
|
85372
|
April 27, 2023
|
|
What's the difference between COUNT(1), COUNT(*), and COUNT(column_name)?
|
|
9
|
34081
|
December 7, 2019
|
|
When storing missing data, should I store them as NULL?
|
|
17
|
44656
|
June 29, 2023
|
|
Can we use WITH for more than one nested query in SQL?
|
|
21
|
22224
|
August 21, 2023
|
|
Does COUNT() include duplicate values of a column?
|
|
25
|
59635
|
July 25, 2023
|
|
When should we use each type of JOIN?
|
|
1
|
10854
|
November 29, 2020
|
|
When using GROUP BY, do we always have to group by a selected column?
|
|
19
|
41171
|
August 7, 2023
|
|
Can we apply ORDER BY with multiple columns?
|
|
21
|
44254
|
July 12, 2023
|
|
When using a CASE statement, do the values for THEN have to be a single type?
|
|
37
|
33618
|
July 25, 2023
|
|
When applying the BETWEEN operator on TEXT values, how are values compared?
|
|
6
|
35392
|
July 5, 2023
|
|
Are there guidelines to splitting a table as provided in the example?
|
|
14
|
22931
|
February 17, 2023
|
|
Is the `AND` used in `BETWEEN` the same as the `AND` operator between conditions?
|
|
13
|
31223
|
July 7, 2023
|
|
What if we only want to delete a specific number of rows?
|
|
30
|
62297
|
April 29, 2023
|
|
When doing an INNER JOIN, are columns matched on NULL values?
|
|
14
|
33574
|
March 15, 2023
|
|
Are all databases relational?
|
|
4
|
72615
|
September 21, 2020
|
|
Can we see a database's schema without being given a diagram?
|
|
0
|
9290
|
November 22, 2018
|
|
Can we apply the LIKE operator to values other than TEXT?
|
|
17
|
60919
|
August 3, 2023
|