Q. Which collations does this statement list?
Code:SHOW COLLATION LIKE 'utf8%'
The SQL statement:
SHOW COLLATION LIKE 'utf8%'
uses the SHOW COLLATION command to list all collations whose names begin with utf8. The % symbol is a wildcard character in SQL that matches any sequence of characters, including no characters at all. Therefore, the pattern 'utf8%' matches any collation names that start with "utf8."
For example, it could list collations like:
- utf8_general_ci
- utf8_unicode_ci
- utf8mb4_general_ci
These collations all start with utf8.
Why the other options are incorrect:
- (A) names ending in utf8%: This would match names ending in utf8 followed by any sequence of characters, but the % after utf8 means it can match anything starting with utf8, not just at the end.
- (C) names ending with utf8: This would be incorrect because utf8% matches names starting with utf8, not ending with it.
- (D) names containing utf8% anywhere: The % symbol at the end means the match is for names starting with utf8, not anywhere in the name.
Therefore, the correct answer is (B) names beginning with utf8.