SHOW TABLE STATUS

SHOW TABLE STATUS 语句用于显示 TiDB 中表的各种统计信息。如果显示统计信息过期,建议运行 ANALYZE TABLE

语法图

ShowStmt:

ShowStmt

ShowTargetFilterable:

ShowTargetFilterable

ShowDatabaseNameOpt:

ShowDatabaseNameOpt

示例

mysql> CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL); Query OK, 0 rows affected (0.11 sec) mysql> INSERT INTO t1 (c1) VALUES (1),(2),(3),(4),(5); Query OK, 5 rows affected (0.02 sec) Records: 5 Duplicates: 0 Warnings: 0 mysql> SHOW TABLE STATUS LIKE 't1'\G *************************** 1. row *************************** Name: t1 Engine: InnoDB Version: 10 Row_format: Compact Rows: 0 Avg_row_length: 0 Data_length: 0 Max_data_length: 0 Index_length: 0 Data_free: 0 Auto_increment: 30001 Create_time: 2019-04-19 08:32:06 Update_time: NULL Check_time: NULL Collation: utf8mb4_bin Checksum: Create_options: Comment: 1 row in set (0.00 sec) mysql> analyze table t1; Query OK, 0 rows affected (0.12 sec) mysql> SHOW TABLE STATUS LIKE 't1'\G *************************** 1. row *************************** Name: t1 Engine: InnoDB Version: 10 Row_format: Compact Rows: 5 Avg_row_length: 16 Data_length: 80 Max_data_length: 0 Index_length: 0 Data_free: 0 Auto_increment: 30001 Create_time: 2019-04-19 08:32:06 Update_time: NULL Check_time: NULL Collation: utf8mb4_bin Checksum: Create_options: Comment: 1 row in set (0.00 sec)

MySQL 兼容性

SHOW TABLE STATUS 语句与 MySQL 完全兼容。如发现任何兼容性差异,请在 GitHub 上提交 issue

另请参阅

下载 PDF
产品
TiDB
TiDB Cloud
© 2024 PingCAP. All Rights Reserved.
Privacy Policy.