How do I see what character set a MySQL database / table / column is?

Question

What is the (default) charset for:

• MySQL database

• MySQL table

• MySQL column

Answer 1

Here's how I'd do it -

For Schemas (or Databases - they are synonyms):

SELECT default_character_set_name FROM information_schema.SCHEMATA 
WHERE schema_name = "schemaname";

For Tables:

SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
       information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
  AND T.table_schema = "schemaname"
  AND T.table_name = "tablename";

For Columns:

SELECT character_set_name FROM information_schema.`COLUMNS` 
WHERE table_schema = "schemaname"
  AND table_name = "tablename"
  AND column_name = "columnname";

Answer 2

For databases:

SHOW CREATE DATABASE "DB_NAME_HERE";

---

In creating a Database (MySQL), default character set/collation is always LATIN, instead that you have selected a different one on initially creating your database

Answer 3

For databases:

Just use these commands:

USE db_name;
SELECT @@character_set_database;
-- or:
-- SELECT @@collation_database;

Answer 4

For tables and columns:

show create table your_table_name

Answer 5

SELECT TABLE_SCHEMA,
       TABLE_NAME,
       CCSA.CHARACTER_SET_NAME AS DEFAULT_CHAR_SET,
       COLUMN_NAME,
       COLUMN_TYPE,
       C.CHARACTER_SET_NAME
  FROM information_schema.TABLES AS T
  JOIN information_schema.COLUMNS AS C USING (TABLE_SCHEMA, TABLE_NAME)
  JOIN information_schema.COLLATION_CHARACTER_SET_APPLICABILITY AS CCSA
       ON (T.TABLE_COLLATION = CCSA.COLLATION_NAME)
 WHERE TABLE_SCHEMA=SCHEMA()
   AND C.DATA_TYPE IN ('enum', 'varchar', 'char', 'text', 'mediumtext', 'longtext')
 ORDER BY TABLE_SCHEMA,
          TABLE_NAME,
          COLUMN_NAME
;

Answer 6

For tables:

SHOW TABLE STATUS will list all the tables.

Filter using:

SHOW TABLE STATUS where name like 'table_123';