query to list all tables in oracle database

columns, what is the name of the column. -The field name is the first line of information in the sheet. 5: Get the data for each row-after sheet the first row. @Test public void Export () throws exception{//DECLARE database String dbname = "Focus" that needs to be exported; DECLARE book Hssfworkbook = new Hssfworkbook (); Gets the Connection, obtains the db metadata Connection con = datasourceutils.getconn (); Statement statemen Statem

Oracle Database Operations (10)-logical backup and recovery of databases (tables), oracle backup and recovery Logical backup and recovery of databases (tables)-export System can export any scheme, for example: Exp system/manager @ myoral owner (system, scott) file = d: syst

How to obtain the names of all tables in the databaseEach database managed by SQL Server has a view named sysobjects, Which is system-level, Therefore, its fully qualified name is -- sys. sysobjects. This table stores not only the tables in the database, but also

The following is a unified script for deleting a table with the prefix "Prefix_": Copy CodeThe code is as follows: Sets the database connection information. Database server address, database user name, data password mysql_connect (' Database host ', ' Database user name ',

-- SQL deletes the primary keys of all user data tables in the database. -- Query all constraints of the current database before deletionSelect * from information_schema.key_column_usage Declare @ TableName nvarchar (250)-- Declar

mCursor cursorForSelect name from sysobjects where xtype = 'u'Open mCursorFetch NEXT from mCursor into @ TableNameWhile @ fetch_status = 0BeginSet @ SQL = 'Insert into tablespace'Set @ SQL = @ SQL + 'exec sp_spaceused ''' + @ TableName + ''''Exec (@ SQL)Fetch NEXT from mCursor into @ TableNameEndClose mCursorDeallocate mCursorGo-- Display resultsSelect TableName, RowsCount from TableSpace -- The last two methods are recommended. For SQL SERVER 2

When there are more database tables, you want to find all the tables that contain a field. -- Syscolumns and sysobjects are database-maintained column set tables and table set tables SE

; #预编译Execute Str; #执行语句deallocate PREPARE Str; #释放预编译SetNum=Num- 1; End while; End$$ delimiter call AddColumn; #调用存储过程After execution, you can see the number of rows returned, but the value returned is inconsistent with the number of tables in my database. But I looked at the table structure and each table was successfully added to this field.I am a rookie, want to learn the content of their own records,

Recently, the company's database found that table data has been removed, and some data tables have records of 0. So I want to find out which data tables in the database have records of 0 to narrow the analysis scope, the following SQL statement can be used: Create Table # Tmptb (tbname sysname, tbrows Int , Tbres

triggers select triggers. name as [Trigger], tables. name as [Table name], triggers. is_disabled as [disabled], triggers. is_instead_of_trigger as [Trigger type], case when triggers. is_instead_of_trigger = 1 then 'instead of 'when triggers. is_instead_of_trigger = 0 then' after 'else null end as [Trigger type description] From sys. triggers triggers inner join sys. tables

1. First run the following codeSELECT concat (' DROP TABLE IF EXISTS ', table_name, '; ')From Information_schema.tablesWHERE table_schema = database name;2. The query is similar to the resultConcat (' DROP TABLE IF EXISTS ', table_name, '; ')DROP TABLE IF EXISTS clients;DROP TABLE IF EXISTS invheader;DROP TABLE IF EXISTS invlines;DROP TABLE IF EXISTS items;3. Copy this