oracle query table name

In Oracle database, there are many ways to query table names. Here are some common query methods.

1. Use theSELECTcommand to query

You can use theSELECTcommand in SQL to query the table name. The specific syntax is:

SELECT table_name FROM user_tables;

Among them,table_nameis the name of the table you need to query,user_tablesis the system table that comes with the Oracle system, used to store the current user All table information below.

For example, if you want to query whether a table namedordersexists, the command is as follows:

SELECT table_name FROM user_tables WHERE table_name = 'orders';

If the table exists, the table nameorders# will be output. ##;If the table does not exist, there will be no output.

Use the
2. DESCRIBEcommand to query the

DESCRIBEcommand is a command provided by Oracle for querying the table structure. You can use This command views column names, data types, lengths and other information in all tables. At the same time, this command can also query the table name. The specific syntax is:

DESCRIBE table_name;

ordersexists, the command is as follows:

DESCRIBE orders;

Use
3. ALL_TABLESView query

ALL_TABLESThe view is a view that comes with the Oracle system and is used to query the current user All table information below, including table name, table space name, owner and other information. You can query the table name through the following command:

SELECT table_name FROM all_tables WHERE owner = <用户名称>;

owneris the user name to be queried. You can query all table information under the current user without adding this condition.

SELECT table_name FROM all_tables;

SCOTT, the command is as follows:

SELECT table_name FROM all_tables WHERE owner = 'SCOTT';

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