What is MySQL latin1?
The latin1 collations have the following meanings. For example, the default collations for latin1 and utf8 are latin1_swedish_ci and utf8_general_ci , respectively. The INFORMATION_SCHEMA CHARACTER_SETS table and the SHOW CHARACTER SET statement indicate the default collation for each character set.
Is a UTF 8 character?
UTF-8 is a variable-width character encoding used for electronic communication. UTF-8 is capable of encoding all 1,112,064 valid character code points in Unicode using one to four one-byte (8-bit) code units. Code points with lower numerical values, which tend to occur more frequently, are encoded using fewer bytes.
What is latin1_general_ci?
For example, latin1_general_ci is explicitly case-insensitive and implicitly accent-insensitive, and latin1_general_cs is explicitly case-sensitive and implicitly accent-sensitive. For the binary collation of the binary character set, comparisons are based on numeric byte values.
What is MySQL collation types?
A MySQL collation is a well-defined set of rules which are used to compare characters of a particular character-set by using their corresponding encoding. Each character set in MySQL might have more than one collation, and has, at least, one default collation. Two character sets cannot have the same collation.
What is utf8_bin collation?
utf8_bin : Compares strings by the binary value of each character in the string. utf8_general_ci : Compares strings using general language rules and using case-insensitive comparisons. utf8_general_cs : Compares strings using general language rules and using case-sensitive comparisons.
How do I change the collation for all tables?
If you’re using PhpMyAdmin, you can now:
- Select the database.
- Click the “Operations” tab.
- Under “Collation” section, select the desired collation.
- Click the “Change all tables collations” checkbox.
- A new “Change all tables columns collations” checkbox will appear.
How do I change the table collation?
- Generate a file containing the ALTER TABLE queries. SELECT CONCAT(‘ALTER TABLE ‘, table_name, ‘ CONVERT TO CHARACTER SET utf8 COLLATE utf8_bin;’) INTO OUTFILE ‘/tmp/alterstatements.
- Check if the output file is correct. cat /tmp/alterstatements.sql.
- Run the SQL file against the current database.
How do I change the column collation in MySQL?
To set the character set and collation at the column level, you can use the CREATE TABLE statement or ALTER TABLE statement (depending on whether you’re creating the table or modifying it), and specify the character set and collation within the column’s definition (the column that you want to set the character set/ …
How do I change the collation table in SQL Server?
You can change the collation of any new objects that are created in a user database by using the COLLATE clause of the ALTER DATABASE statement. This statement does not change the collation of the columns in any existing user-defined tables. These can be changed by using the COLLATE clause of ALTER TABLE.