Is there any command that I can locate a certain table from all databases? Since I forgot where the table is. Thanks.
Use the MySQL specific:
SHOW TABLES
...or use the ANSI standard, INFORMATION_SCHEMA.TABLES:
SELECT table_name,
table_schema AS dbname
FROM INFORMATION_SCHEMA.TABLES
WHERE table_name='searched table name'
Related
I have this query below. This query finds on database if that particular table is exists in the database. My question is, by using INFORMATION_SCHEMA.TABLES, is it going to find that table name to the other database? Or in just particular database where you are connected???
select * from INFORMATION_SCHEMA.TABLES where TABLE_NAME = N'WebServiceCredentials'
As per the MSDN:
Returns one row for each table in the current database for which the
current user has permissions
You can view all the tables for all databases, but not using INFORMATION_SCHEMA.TABLES
You can using system tables.
You can run this query:
sp_msforeachdb 'select "?" AS dbname, * from [?].sys.tables'
Is there an HSQLDB equivalent for the MYSQL SHOW COLUMNS from TABLE command?
HSQLDB does not have separate commands for showing tables, columns or other database objects.
You use SELECT * FROM INFORMATION_SCHEMA.COLUMNS and various other tables in the INFORMATION_SCHEMA for such purposes.
http://hsqldb.org/doc/2.0/guide/databaseobjects-chapt.html#dbc_information_schema
This is the query that you need.
SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = '<your schema>' AND TABLE_NAME = '<name table or view>';
I am using SQL Server 2005. I am trying to SELECT a list of tables in one of my database. Here is my structure of my SQL Server:
- <IP>(SQL Server 9.0 -userlogin)
- Databases
- Company
- Tables
- dbo.UserDB
- dbo.detailsDB
- dbo.goodsDB
I would like to retrieve the values of dbo.UserDB, dbo.detailsDB, dbo.goodsDB
But i do not know what is the exact sql query needed.
I have tried many ways like
SELECT * FROM userlogin.Tables; and
SELECT * FROM userlogin.Company.Tables;, but none of them works.
I have seen quite a few posts which suggests using show databases and show tables, but they don't seem to work as well.
Is it possible to select a list of table names in a database in the first place?
Thank you for any help in advance.
Thanks for the MSDNA link that #TomTom provided, I can now list my tables in my database.
However, I would want to list specific tables where TABLE_NAME contains "user".
How can I do it? I am trying on the following sql but it is not displaying result at the moment:
SELECT DISTINCT TABLE_NAME
FROM Company.INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME LIKE '%"user"%';
GO
Try the iNFORMATION_SCHEMA.
http://msdn.microsoft.com/en-us/library/ms186778.aspx
They contain all the schema information you need.
Use the new sys system catalog in SQL Server 2005 and up:
SELECT Name
FROM sys.tables
WHERE is_ms_shipped = 0 -- only list *your* tables - not the system / MS table
You can read more about system catalog views and how to query them in the MSDN Books Online - and be warned - there's lots more to read and learn!
You could use this
Use ***database name***
SELECT *
FROM sys.tables
WHERE name like '%user%'
Sorry, have seen that #marc_s has provided the answer before me!
You can use INFORMATION_SCHEMA as told by #TomTom:
USE <<YOUR_DB_NAME>>
SELECT TABLE_SCHEMA + '.' + TABLE_NAME, *
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
ORDER BY TABLE_SCHEMA + '.' + TABLE_NAME
You can customize above query as per your requirements.
For your other question to find tables where the name contains 'user', execute the following statement:
USE <<YOUR_DB_NAME>>
Exec sp_tables '%user%'
Try:
SELECT *
from sysobjects
where type = 'U' AND
NAME LIKE '%user%'
GO
How to find what are all tables has binary data and display the table name ?
For MySql you want the INFORMATION_SCHEMA COLUMNS table:
http://dev.mysql.com/doc/refman/5.1/en/columns-table.html
If you need to find all of the tables which have binary columns, then you can create a query joining with the INFORMATION_SCHEMA TABLES table:
http://dev.mysql.com/doc/refman/5.1/en/tables-table.html
That depends a lot on what database you are using. Many databases (at least MySQL and PostgreSQL, maybe all) has a database called information_schema (or something similar). This is a database describing the structure of your databases along with all tables, their fields and what types of data the fields hold. So this would be a good starting point.
I'd need to know which database, but this (or something very similar) should work on Oracle:
select *
from all_tab_columns
where data_type in ('BLOB', 'RAW')
;
you need to select the system tables (in msssql 2000 - syscolumns) or system management views (in mssql 2005 or 2008 - sys.columns) to find the columns with system_type_id you need to find, and then find the corresponding table joining sys.columns and sys.objects by object_id field.
Can you ask the DBA or the DB-developper?
if no, what DB (Oracle, MySql, Microsoft, other?) are you using ..
EDITED for MySQL DB
Use
select table_schema
, table_name
, column_name
, data_type
from information_schema
where data_type like '%blob%'
or data_type in ('binary','varbinary')
I would like to do a lookup of tables in my SQL Server 2005 Express database based on table name. In MySQL I would use SHOW TABLES LIKE "Datasheet%", but in T-SQL this throws an error (it tries to look for a SHOW stored procedure and fails).
Is this possible, and if so, how?
I know you've already accepted an answer, but why not just use the much simpler sp_tables?
sp_tables 'Database_Name'
This will give you a list of the tables in the current database:
Select Table_name as "Table name"
From Information_schema.Tables
Where Table_type = 'BASE TABLE' and Objectproperty
(Object_id(Table_name), 'IsMsShipped') = 0
Some other useful T-SQL bits can be found here: http://www.devx.com/tips/Tip/28529
Try this:
USE your_database
go
Sp_tables
go
Try this
SELECT * FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE 'Datasheet%'
One who doesn't know the TABLE NAME will not able to get the result as per the above answers.
TRY THIS
SELECT * FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA='dbo';
Try this :
select * from information_schema.columns
where table_name = 'yourTableName'
also look for other information_schema views.
And, since INFORMATION_SCHEMA is part of the SQL-92 standard, a good many databases support it - including MySQL.
Try following
SELECT table_name
FROM information_schema.tables
WHERE
table_name LIKE 'Datasheet%'
Try it :
SELECT * FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE '%'
MS is slowly phasing out methods other than information_schema views. so for forward compatibility always use those.
I know this is an old question but I've just come across it.
Normally I would say access the information_schema.tables view, but on finding out the PDO can not access that database from a different data object I needed to find a different way. Looks like sp_tables 'Database_Name is a better way when using a non privileged user or PDO.