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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

ShowTableStmt
SHOW FULL TABLES FROM Identifier IN Identifier ShowLikeOrWhere
ShowLikeOrWhere
LIKE SimpleExpr WHERE Expression

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