The related ST_GEOMETRY_COLUMNS table provides information about table columns that store spatial data. See Section 26.35, “The INFORMATION_SCHEMA ST_GEOMETRY_COLUMNS Table”. Other database systems also have either exactly such or similar database implemented. Apr 30, 2019 by Robert Gravelle. This issue can be solved using MySQL since it supports many statements that provide information about the databases and tables which it supports. Other terms that sometimes are used for this information are data dictionary and system catalog.. INFORMATION_SCHEMA is the information database, the place that stores information about all the … I didn't understand why it is happnes. Have you ever wanted to get a list of indexes and their columns for all tables in a MySQL database without having to iterate over SHOW INDEXES FROM ‘[table]’? However, the values of the PARTITION_NAME, SUBPARTITION_NAME, PARTITION_ORDINAL_POSITION, SUBPARTITION_ORDINAL_POSITION, PARTITION_METHOD, SUBPARTITION_METHOD, … The query below lists all tables in all user databases. Examples Example 1: The following example retrieves table metadata for all of the tables in the dataset named mydataset.The query selects all of the columns from the INFORMATION_SCHEMA.TABLES view except for is_typed, which is reserved for future use.The metadata returned is for all tables in mydataset in your default project — myproject.. mydataset contains the following tables: In relational databases, database metadata, such as information about the MySQL server, the name of a database or table, the data type of a column, or access privileges are stored in the data dictionary and/or system catalog. Show indexes for a table with the MySQL INFORMATION_SCHEMA. I’ve previously posted how to get the indexes for a MySQL table using a "SHOW INDEXES" SQL query and in this post show an alternative way to get the indexes for a table using MySQL’s INFORMATION_SCHEMA. To list tables just from current database use this query.. Query select table_schema as database_name, table_name from information_schema.tables where table_type = 'BASE TABLE' and table_schema not in ('information_schema','mysql', 'performance_schema','sys') order by database_name, table_name; Still I able to get information about the table_schema for the table deleted. Example tables. After drop table when I fire a query for table_schema from information_schema.tables it will give me result as 'amit'. There are at least two ways to get a MySQL table's structure using SQL queries. PARTITIONS is a nonstandard INFORMATION_SCHEMA table.. A table using any storage engine other than NDB and which is not partitioned has one row in the PARTITIONS table. mysql> select select COLUMN_NAME, DATA_TYPE, IS_NULLABLE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION from INFORMATION_SCHEMA.COLUMNS where table_name='account'); In coding I run the query using mysql_real_query() whose result is stored in INFORMATION_SCHEMA provides access to database metadata.. Metadata is data about the data, such as the name of a database or table, the data type of a column, or access privileges. You will get an empty value for `information_schema`.`TABLES`.`TABLE_TYPE` - even since this field is marked as NOT NULL; ... IMHO the empty string an invalid value for this field. The INFORMATION_SCHEMA database is an ANSI standard set of views we can find in SQL Server, but also MySQL. If I'm right this is a way to get an inconsitent database state. It is possible for the user to forget the name of the database or table or the structure of table or the name of the columns. The COLUMNS table provides information about columns in tables. This post deals with querying the INFORMATION_SCHEMA which has more information available than using DESCRIBE. The COLUMNS table has these columns: Here are a couple ways… The following query using the INFORMATION_SCHEMA STATISTICS table will work prior to MySQL … The first is using DESCRIBE (which I have already covered in an earlier post) and the second by querying the INFORMATION_SCHEMA. It provides the read-only access to details related to databases and their objects (tables, constraints, procedures, views…) stored on the server.