How to Describe Table in Teradata

CREATE TABLE command is used to create tables in Teradata. Time Series Data Storage.

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Each column in a table is associated with a data type.

. The following procedure shows how to create tables using BTEQ but you can also use Teradata Studio. Here DatabaseName Name of the database where the tables belong. Contains definitions of and information about all objects in the system.

This example returns the CREATE VIEW text for table user_namev1 in XML format. Teradata Support for Time Series Data. The DESCRIBE TABLE statement returns a CREATE TABLE statement that describes the columns in the table.

Time Series Data Overview. Views can be built using a single table or multiple tables by way of join. DESCRIBE is a Teradata extension to the ANSIISO SQL2011 standard.

Teradata SQL Assistant for Microsoft Windows User Guide. Operations on Time Series Data. New_tbl_name The new name for the table you want to keep.

2 In the Database Name field type the name of the database or owner if using Oracle containing the tables. For complete information about SHOW TABLE syntax see Teradata Vantage SQL Data Definition Language Syntax and Examples B035-1144. Unlike a SHOW IN XML TABLE request the XML document generated by a SHOW IN XML VIEW request does not report the parsed query for the view and only contains the column definitions of the view and the database objects it references.

Select Tools List Tables. Create one or more tables using the CREATE TABLE statement. Introduction to Teradata Time Series Tables and Operations.

TableName - table name. Logon on to Teradata Database as user DBADMIN using BTEQ. The output includes the system generated TD_TIMEBUCKET TD_TIMECODE and TD_SEQNO columns for PTI Tables.

Is accessed via Teradata-supplied views. In that case SHOW table helps to get the table definition in Teradata. Shows a list of all tables in a keyspace or executable CQL information for a single table.

Whenever you are creating a table in Teradata you need to define the data types of each column. Leave a Reply Cancel reply. Some time we want to check the table definition such as number of columns data type of the columnprimary key unique constraints and so on.

SELECT FROM SELECT DatabaseName TableName CASE WHEN IndexType IN UPQ THEN Unique WHEN IndexType IN K THEN Primary Key END VARCHAR30 AS ConstraintType TRIMTRAILING FROM XMLAGGColumnName ORDER BY ColumnPositionVARCHAR255 AS Details FROM DBCIndicesV WHERE UniqueFlag Y. DBCALLSPACE is the system table used to find the space occupied for each table or database in Teradata. DatabaseName - database name.

Here database_name The name of the database containing the table. Table Commands. SELECT DatabaseName TableName CreateTimeStamp LastAlterTimeStamp FROM DBCTablesV WHERE TableKind T and DatabaseName DBC ORDER BY TableName.

Query below lists all tables in DBC Teradata database. You can use SHOW TABLE to display the table definition for a PTI table. SHOW Table.

More specifically Im trying to display the definition of a view that is created from certain tables that I do not have SELECT or VIEW DEFINITION access to. 1620 - DESCRIBE - Teradata Database - Teradata Vantage NewSQL Engine. Their definition is stored permanently in data dictionary but they dont store copy of the data.

Required fields are marked Comment. Is there a query that can be run to give me the same output. SHOW VIEW in XML Format.

Index Definition Additional indexing options such as Primary Index. Data for the view is built dynamically. RENAME TABLE database_nameold_tbl_name to database_namenew_tbl_name.

A view may contain a subset of rows of the table or a subset. In my Teradata SQL Assistant Client I can right-click a table and select Show Definition this will display the column types and how they are defined. Column Definition Specifies the list of columns data types and their attributes.

Consider a Teradata table created by using FedSQL. Old_tbl_name The name of the existing table. The syntax for Teradata RENAME TABLE is as below.

CREATE SET TABLE database_nametable_name FALLBACK column_name data_type co. Click to see full answer. Is data about the data or metadata Is distributed across all AMPs.

On the toolbar click. Is an integrated set of system tables. Your email address will not be published.

DBCUsersinformation about all users. In the absence of either the default title the column name is returned. Is entirely maintained by the RDBMS.

Query to list all the dbc tables in Teradata. Lists user-defined types UDTs in the current keyspace or all UDTs in the cluster when no keyspace is selected or the CQL definition for a specified UDT. Query SELECT DatabaseName TableName CreateTimeStamp LastAlterTimeStamp FROM DBCTablesV WHERE TableKind T and DatabaseName DBC ORDER BY TableName.

DESCRIBE functions like the ANSIISO SQL2011 statements DESCRIBE INPUT and DESCRIBE OUTPUT. Create table xcustomer item_name char30 cost decimal102 delivered date. DBCTablesinformation about all tables.

For example for storing string data like James into a column we need to define a column as char or varchar. Views are database objects that are built by the query. Then the title specified for the CREATE TABLE statement is returned.

Hive describe command to check the meta data of the Hive table. DROP TABLE command is used to drop a table. Data types simply denote the type of data that we can store in any particular column.

Table size in Teradata. In this case DBC is the database name. Table Options Specifies the physical attributes of the table such as Journal and Fallback.

Syntax for Show table. ALTER TABLE command is used to add or drop columns from an existing table.

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