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

ShowTableStatusStmt:

ShowTableStatusStmt

FromOrIn:

FromOrIn

StatusTableName:

StatusTableName

示例

CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, c1 INT NOT NULL);
Query OK, 0 rows affected (0.11 sec)
INSERT INTO t1 (c1) VALUES (1),(2),(3),(4),(5);
Query OK, 5 rows affected (0.02 sec) Records: 5 Duplicates: 0 Warnings: 0
SHOW TABLE STATUS LIKE 't1';
*************************** 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)
analyze table t1;
Query OK, 0 rows affected (0.12 sec)
SHOW TABLE STATUS LIKE 't1';
*************************** 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,请尝试 TiDB 支持资源

另请参阅

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