How to Use Describe Command in Sql Server

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You can use either DESC or DESCRIBE statement. The following is the query that display.

Sql Server Describe Table Javatpoint

EXEC sp_columns table_name EXEC sp_columns table_name.

. Column allow NULL or NOT NULL. SQL DESC Statement Describe Table SQL DESC statement use for describe the list of column definitions for specified table. For more information see Section 13775 SHOW COLUMNS Statement and Section 1382 EXPLAIN Statement.

Posted by brett MCP MCNPS CHFI ACE on Sep 17 at 801 AM Mark as helpful. You can use DESCRIBE to get a list of columns in a table or view along with its datatypes. The MySQLs DESCRIBE or DESC both are equivalent.

Sp_help your_object_name or. SQL_statement can be any of these commands. Hopefully the user figured it out since the original post was from 2005.

SQL commands are the instructions used to communicate with a database to perform tasks functions and queries with data. In this new chapter we will show the following examples in a local SQL Server using sqlcmd. If you omit schema SQLPlus assumes you own object.

The describe command gives you the information about the column names types length etc. The DESC is the short form of DESCRIBE command and used to dipslay the information about a table like column names and constraints on column name. If several columns have the same names but the datatypes do not match the NATURAL JOIN clause can be modified with the USING clause to specify the columns that should be used for an EQUIJOIN.

Beginning with Oracle8 DESCRIBE may be used to see the definition of an Oracle object type or to list definitions for all the functions and procedures in a stored PLSQL package. In the previous article How to work with the command line and Azure to automate tasks we worked with the sqlcmd in Azure. REsql-server-l Using exactly DESC OR DESCRIBE or equivalent command in SQL Server.

The USE statement is marked as not applicable to SQL Database at the top of this page because even though you can have the USE statement in a batch it doesnt do anything. This returns a row for each column in the table describing the column in detail. PREV HOME UP NEXT.

When a SQL Server login connects to SQL Server the login is automatically connected to its default database and acquires the security context of a database user. You can use this command in the following ways. SHOW columns from yourTableName command.

You can specify the columns to show and filter the data. The DESCRIBE and EXPLAIN statements are synonyms used either to obtain information about table structure or query execution plans. For information on the contents of the fields see The SQLDA contents returned after DESCRIBE.

We can get this facility by running some built-in store procedures or SQL query. Some example output can be seen below. SQL stands for Structured Query Language.

In SQL Server lets say you want to describe a table mytable in schema myschema in the database mydb you can do following. In this tutorial we will learn about different methods to describe our specific table. USING Clause is used to match only one column when more than one column matches.

The simplest way to use sp_columns to show the columns and related information about a SQL Server table is to execute the stored proecedure passing it the table name like so. To control the width of the data displayed use the SET LINESIZE command. USING Indicates what value to assign to each SQLNAME variable in the SQLDA.

SELECT INSERT UPDATE DELETE CREATE TABLE AS SELECT CREATE REMOTE TABLE. Using exactly DESC OR DESCRIBE or equivalent command in SQL Server. NATURAL JOIN and USING Clause are mutually exclusive.

This may give unexpected text wrapping in your. One can easily describe an object using this command. The select command is used to return data from a table or view or another database object.

Decreasing or increasing the linesize with the SET LINESIZE command usually makes each column proportionally smaller or larger. The following SQL statement selects all the columns from the Customers table sorted descending by the CustomerName column. Return the query plan with recommendations to optimize the SQL statement performance.

Columns output for the DESCRIBE command are typically allocated a proportion of the linesize currently specified. SELECT FROM information_schemacolumns. The following example will show the ID Description data of the dbosales table.

The DESCRIBE command is equivalent to the following command. DESCRIBE schema object db_linkLists the column definitions for the specified table view or synonym or the specifications for the specified function or procedure. WHERE table_name Users.

Represents the schema where the object resides. Sqlcmd allows executing queries T-SQL sentences and SQL Server scripts using the command line. Both are return same result.

Represents the table view type procedure function. Datatype of the Column. After the DESCRIBE statement is executed all the fields in the SQLDA except SQLN are either set by Db2 or ignored.

SELECT FROM information_schemacolumns WHERE table_name Users. The first method is more useful because you can specify dbschema name. The SQL statement on which EXPLAIN will run.

EXEC sp_help table_name EXEC sp_help table_name. The DESCcommand is used to sort the data returned in descending order. SQL commands can be used to search the database and to do other functions like creating tables adding data to tables modifying data and dropping tables.

Up to 5 cash back You may be familiar with the SQLPlus DESCRIBE command. SQL USING Clause. DESCRIBE statement to get following information.

But to describe a table or object MS SQL Server provides a very useful command or built-in stored procedure sp_help. SELECT FROM Customers. It will produce the following output.

Sql Server Describe Table Javatpoint