Mysql describe

For more information, see Section 13. Using DESCRIBE statement. The query is as follows. Switch to a specific database. Use the DESCRIBE statement.

So desc or describe command shows the structure of table which include name of the column, data-type of column and the nullability which means, that column can contain null values or not. All of these features of table are described at the time of Creation of table. By default, Mysql not describe all tables in the database.

Instead of mentioning exact column_name, we can also mention strings with ‘ ’ to match the column_name through a wild search. You can use either DESC or DESCRIBE statement. Can describe be used to show columns from all tables in a database? These statements also display information for views.

Create a database on the sql server. List all databases on the sql server. To see all the tables in the db. This post looks at how to show the tables in a particular database and describe their structure. That means I can only see rows of text at once.

Naturally, it can be run locally, or put out for anyone on a server to use. But to describe a table or object MS SQL Server provides a very useful command or built-in stored procedure sp_help. It also supports the approximate numeric data types (FLOAT, REAL, and DOUBLE PRECISION). MariaDB server, and their global privileges. There are some clauses in CREATE PROCEDURE syntax which describe the characteristics of the procedure.

That was my first thought, but this does not give a result in the nice tables wish describe uses, it returns the SQL statements for creating the databases. I want the following for all tables in one shot? Each database consists of one or more tables.

A table is made up of columns (or fields) and rows (records). For clarity, they are shown in uppercase. PostgreSQL does not provide the DESCRIBE statement.

However, you can query the information on columns of a table in a couple of ways. Based on this definition, the fullname column that in the example above is a virtual column. In SQL procedures, a cursor makes it possible to define a result set (a set of data rows) and perform complex logic on a row by row basis. MySQL generated column’s.

This post deals with querying the INFORMATION_SCHEMA which has more information available than using DESCRIBE. PHP provides mysql _connect() function to open a database connection. Show all data in a table.

This is the second in a series of three posts about using the sp_tables, sp_columns and sp_stored_procedures stored procedures with Microsoft SQL Server databases. To establish the connection, the host name, database user and password is needed. Este comando sirve para conocer la estructura de una tabla relacional. I have (empty) tables which:.

SHOW TABLES or CREATE TABLE. NULL spans all types in the sense that the property of whether a column can contain NULL values is treated as a type attribute. You have to get only the basic knowledge of SQL. In this case, this SELECT statement would return all supplier_id values where the supplier_name is Apple or Microsoft.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. Is there a way to output the table description (using DESCRIBE ) into an OUTFILE like you can for SELECT query statements? Access the database that you want to view the stored procedures. Open the Stored Procedures menu.

You will see a list of stored procedures that belong to the current database.