SHOW TABLE STATUS
Syntax
SHOW TABLE STATUS [{FROM | IN} db_name]
[LIKE 'pattern' | WHERE expr]
Description
SHOW TABLE STATUS works like SHOW TABLES, but provides more extensive information about each non-TEMPORARY table.
The LIKE clause, if present on its own, indicates which table names to match. The WHERE and LIKE clauses can be given to select rows using more general conditions, as discussed in Extended SHOW.
The following information is returned:
| Column | Description |
|---|---|
| Name | Table name. |
| Engine | Table storage engine. |
| Version | Version number from the table's .frm file. |
| Row_format | Row format (see InnoDB, Aria and MyISAM row formats). |
| Rows | Number of rows in the table. Some engines, such as XtraDB and InnoDB may store an estimate. |
| Avg_row_length | Average row length in the table. |
| Data_length | For InnoDB/XtraDB, the index size, in pages, multiplied by the page size. For Aria and MyISAM, length of the data file, in bytes. For MEMORY, the approximate allocated memory. |
| Max_data_length | Maximum length of the data file, ie the total number of bytes that could be stored in the table. Not used in XtraDB and InnoDB. |
| Index_length | Length of the index file. |
| Data_free | Bytes allocated but unused. For InnoDB tables in a shared tablespace, the free space of the shared tablespace with small safety margin. An estimate in the case of partitioned tables - see the PARTITIONS table. |
| Auto_increment | Next AUTO_INCREMENT value. |
| Create_time | Time the table was created. |
| Update_time | Time the table was last updated. On Windows, the timestamp is not updated on update, so MyISAM values will be inaccurate. In InnoDB, if shared tablespaces are used, will be NULL, while buffering can also delay the update, so the value will differ from the actual time of the last UPDATE, INSERT or DELETE. |
| Check_time | Time the table was last checked. Not kept by all storage engines, in which case will be NULL. |
| Collation | Character set and collation. |
| Checksum | Live checksum value, if any. |
| Create_options | Extra CREATE TABLE options. |
| Comment | Table comment provided when MariaDB created the table. |
| Max_index_length | Maximum index length (supported by MyISAM and Aria tables). Added in MariaDB 10.3.5. |
| Temporary | Placeholder to signal that a table is a temporary table. Currently always "N", except "Y" for generated information_schema tables and NULL for views. Added in MariaDB 10.3.5. |
Similar information can be found in the information_schema.TABLES table as well as by using mysqlshow:
mysqlshow --status db_name
Example
show table status\G
*************************** 1. row ***************************
Name: bus_routes
Engine: InnoDB
Version: 10
Row_format: Dynamic
Rows: 5
Avg_row_length: 3276
Data_length: 16384
Max_data_length: 0
Index_length: 0
Data_free: 0
Auto_increment: NULL
Create_time: 2017-05-24 11:17:46
Update_time: NULL
Check_time: NULL
Collation: latin1_swedish_ci
Checksum: NULL
Create_options:
Comment:
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https://mariadb.com/kb/en/show-table-status/