WebOct 21, 2024 · -- データベース、テーブルごとの件数・容量・カラム・キー情報・文字コード・AUTO_INCREMENTを一括で表示する SELECT table_info. table_schema AS database_name, database_info. table_count AS table_count, database_info. db_size AS db_size, table_info. table_name AS table_name, table_info. table_rows AS table ... WebFeb 16, 2014 · Lets find out what exists. mysql> SELECT table_schema, table_name FROM information_schema.tables WHERE tabl e_schema = 'mydb'; Empty set (0.00 sec) Not only do i not know why the first statement shows tables which is wrecking my code, i dont know why this is not showing any tables (in that database). note: The databases should all be …
調べるのがめんどくさい人のためのMySQLのSQL集 - Qiita
Web在MySQL8.0以前,通常会通过infomation_schema的表来获取一些元数据,例如从tables表中获取表的下一个auto_increment值,从indexes表获取索引的相关信息等。 但在MySQL8.0去查询这些信息的时候,出现了不准确的情况。例如auto_increment, --此时test表的auto_increment是204 mysql> show create table test\G ***** 1. row **** WebMySQL 在名為 INFORMATION_SCHEMA 的特殊結構描述中提供資料庫的中繼資料。每個 MySQL 執行個體都有一個 INFORMATION_SCHEMA 結構描述。它包含幾個唯讀的資料表,你可以查詢這些資料表以取得你想要的資訊。 ... information_schema.tables 資料表包含有關資料表的中繼資料。 ... local business money machine
MySQL :: MySQL Information Schema
WebThe TABLES table provides information about tables in databases.. Columns in TABLES that represent table statistics hold cached values. The information_schema_stats_expiry … WebOct 18, 2013 · 'information_schema' has ONLY SERVICE INFORMATION. It has info about table 'db' is exist, but it table IS NOT IN 'information_schema' DATABASE -- somewhere, but not in 'information_schema'. Info about database which has needed table saved in TABLE_SCHEMA field WebNov 29, 2024 · 在MySQL8.0以前,通常会通过infomation_schema的表来获取一些 元数据 ,例如从tables表中获取表的下一个auto_increment值,从indexes表获取索引的相关信息 … indian bentonite clay detox