Consider the following employee table and salary table. It is a mandatory field in a table. BTEQ utility is a powerful utility in Teradata that can be used in both batch and interactive mode. Step 7 − Teradata VMWare is added to the VMWare client. The following example returns the average of employees net salary value from the table. Merge Join method takes place when the join is based on the equality condition. You can view the collected statistics using HELP STATISTICS command. By installing this, you can access teradata from your local system using Teradata SQL Assistant, Teradata Administrator or any other utilities like BTEQ, FASTLOAD, MLOAD etc. Join indexes are mainly used for improving the performance. 15.10 - Teradata SQL Assistant for Microsoft Windows User Guide - SQL Assistant prodname SQL Assistant vrm_release 15.10 category User Guide featnum B035-2430-035K. You must sign in to leave a comment. Robust Utilities − Teradata provides robust utilities to import/export data from/to Teradata system such as FastLoad, MultiLoad, FastExport and TPT. Distributes the records into the target table. The following example executes the Macro names Get_Emp; When the following command is executed, it retrieves all records from employee table. RAID 1 is commonly used in Teradata. Permanent tables, journals, fallback tables and secondary index sub-tables use permanent space. Phase 2 starts when FastLoad receives the END LOADING statement. Users don't need separate privileges on the database objects used inside the Macro. Teradata Tools and Utilities is a group of products designed to work with Teradata Database. Log Table − Maintains the results from each phase of MultiLoad for restart purpose. A multi-table join index is created by joining more than one table. Click Install to display the Installation Status screen. If subquery returns only one value, you can use = operator to use it with the outer query. Following query orders the records of the employee table by Joined Date and assigns the ranking on Joined Date. The definition of Macros is stored in Data Dictionary. Employee 105 is not included in the result since it doesn’t have matching records in the Salary table. It is capable of handling large volumes of data and is highly scalable. These operators are used to perform comparison and combine multiple conditions. As the recommended TMODE setting is ANSI, users can change the TMODE to TERA. CASE expression evaluates each row against a condition or WHEN clause and returns the result of the first match. EmployeeNo 105 is excluded since it doesn’t exist in SALARY table. The target table is not required for MultiLoad. Within a Macro, these parameters are referenced with ; (semicolon). Following is the generic syntax of CREATE MACRO command. COALESCE is a statement that returns the first non-null value of the expression. When the above query is executed, it produces the following output. Aggregation functions can be SUM, COUNT, MAX,MIN, AVG. OLAP functions are similar to aggregate functions except that the aggregate functions will return only one value whereas the OLAP function will provide the individual rows in addition to the aggregates. A primary may have a maximum of 64 columns. There are 2 types of Primary Indexes. Following is an example of a Macro that accepts parameters. Installation. Each AMP is associated with a set of disks on which data is stored. Merge Join uses different join strategies to bring the rows to the same AMP. Following is a quick summary of the history of Teradata, listing major milestones. The following example creates a JOIN INDEX named Employee_Salary_JI by joining Employee and Salary tables. Locks on the target table is released and the error tables are dropped. Connectivity − Teradata can connect to Channel-attached systems such as Mainframe or Network-attached systems. There are some differences between the primary index and the secondary index. BYNET sends the data to the identified AMP. The following example deletes the employee 101 from the table employee. Secondary indexes are an alternate path to access the data. A stored procedure contains a set of SQL statements and procedural statements. Each individual server in a Teradata system is referred as a Node. First error table stores conversion errors whereas second error table stores duplicate records. Click OK. Computer -> Control Center -> Network Settings -> Select Ethernet Network Card->Edit. Open Virtual Network Editor from the EDIT menu of VM. Any changes to the data in primary disk is reflected in mirror copy also. The following UNION query combines the EmployeeNo value from both Employee and Salary table. One limitation of aggregate join index is that it supports only SUM and COUNT functions. This Teradata Tools and Utilities (TTU) 17.00 package is the full collection of Teradata client tools for macOS. There are different types of Joins available. Step 6 − Select 'Open a Virtual Machine'. They are used to connect to your Vantage Advanced SQL instance. At the logon prompt, enter the command. 2006 − Launch of Teradata Master Data Management solution. When the client runs queries to retrieve records, the Parsing engine sends a request to BYNET. Teradata uses different join methods to perform join operations. If you define a SET table, then the optimizer will check if the record is duplicate for each and every record inserted. EXPORT − Specifies the output file path and initiates the export. While creating a new user, the user may be assigned to an account. Other fields are optional. Agreed that installation on windows will raise a few eyebrows; but i have it for my personal use and that’s where i can do all RnD. Select the added Teradata VMware and click ‘Play Virtual Machine’. AMP stores these records on its disks. A condition is associated with WHERE clause. The following example returns NULL if the DepartmentNo is equal to 3. They are just defined as the maximum amount of space the database/user can use. The following query fetches records from the employee table and orders the results by FirstName. You can run the following EXPLAIN plan and verify the optimizer plan. Views provide additional level of security by restricting the rows or columns of a table. Teradata SQL Assistant for Microsoft Windows is a query and information discovery tool used to retrieve data from Teradata Database or any ODBC-compliant database server. The following example groups the records by DepartmentNo column and identifies the total count from each department. See this answer in context. The following example fetches records with employee numbers not in 101, 102 and 103. For the Nested Join to take place, one of the condition should be equality on the unique primary index of one table and then joining this column to any index on the other table. LOGON − Used to log into Teradata system. Spool space error is generated if the query exceeds per AMP spool space limit for that user. Teradata uses hashing algorithm to determine which AMP gets the row. Consider the following Orders table with Primary Index on OrderNo. Open the SQL Assistant which is similar to Microsoft's SSMS from Windows > All Programs > Teradata SQL Assistant or from C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Teradata Client 15.00\Teradata SQL Assistant. Target table should not have secondary index, join index and foreign key reference. RANK function can also filter the number of records returned based on the rank. The following example counts the number of records in the Salary table. Following is the syntax. The following example retrieves the records from Employee_View; An existing view can be modified using REPLACE VIEW statement. It exports data from employee table and writes into a file employeedata.txt. The following example creates NUSI on FirstName column of employee table. Optimizer will decide if it can use NUSI or Full Table Scan. Views are created using CREATE VIEW statement. It is used to specify which AMP gets the data row. It can be used with any SQL statement except on another EXPLAIN command. Within each partition they will be ordered by their row hash. Following is the list of common terms used in FastLoad script. Combining rows using a UNION, MINUS, or INTERSECT operator. The definition of stored procedure is stored in database and the parameters are stored in data dictionary tables. as NULL. Dates are stored as integer internally using the following formula. Teradata SQL Assistant is a tool shipped with Teradata utilities. There are two types of INTERVAL functions. Now open command prompt in local system and ping this IP Address. The following example modifies the view Employee_View for adding additional columns. Checks ERRORCODE to make sure that the statement is successful, following each SQL statement. This chapter discusses the features available for data protection in Teradata. Volatile Table − The data inserted into a volatile table is retained only during the user session. Following is the syntax to modify a view. Collect statistics on the partitioning columns. Remove unnecessary ORDER BY clauses unless required. The following example calls the stored procedure InsertSalary and inserts records to Salary Table. EXPORT − Specifies the target file and the export format. It is available from Teradata's R package repository. When the above query is executed, it produces the following output. MINUS/EXCEPT commands combine rows from multiple tables and returns the rows which are in first SELECT but not in second SELECT. As can be seen it is a single-AMP retrieval and the optimizer is using the unique primary index to access the row. Download the VMWARE workstation player for Windows. A table is a collection of rows and columns. ... by way of a traversal of index #n extracting row ids only …, A spool file is built containing the Row IDs found in a secondary index (index #n), ... we do a SMS (set manipulation step) …. [Sign Up using above link and get $100 joining bonus], DBS state is 4: Logons are enabled – Users are logged on. The following table compresses the field DepatmentNo for values 1, 2 and 3. ACCOUNT option in CREATE USER is used to assign the account. UPDATE statement is used to update records from the table. Clique is a mechanism used by Teradata to protect data from Node failures. Collect statistics on the Unique Primary Index columns. This chapter discusses the date/time functions available in Teradata. The following example fetches records with employee numbers in 101, 102 and 103. It is a complete query management tool where you can prepare a query, execute it and view results. Message Passing Layer − Message Passing Layer called as BYNET, is the networking layer in Teradata system. 2.05 - Teradata® QueryGrid™ Installation and User Guide - Teradata QueryGrid prodname Teradata QueryGrid vrm_release 2.05 created_date April 2018 category Administration Configuration Installation User Guide featnum B035-5991-205K. Following is the syntax. The rows of the join index are hashed on employee_name column. This unit may look like a single unit to the user but they may be spread across several disks. Each AMP sorts the records on row hash and writes them to the disk. When the client runs queries to insert records, Parsing engine sends the records to BYNET. Following is an example to create a table with partition primary Index. Step 3 − Specify the Target, Work and Error tables. SQL Assistant Web Installation. In the above example, the table is partitioned by OrderDate column. BTEQ can be used to import data into Teradata tables from flat file and it can also be used to extract data from tables into files or reports. Log Table − Used to maintain the checkpoints taken during load which will be used for restart. When the rows are accessed using Unique Secondary Index, it’s a two amp operation. Phase 1 − Preliminary Phase – Performs basic setup activities. Teradata is one of the popular Relational Database Management System. The data types from each SELECT must be compatible. Following is the syntax of the SELECT statement with GROUP BY clause. Avoid using secondary index that requires additional physical structure and additional I/O maintenance. There are two types of secondary indexes −. 7.7.5 Multiple Teradata Databases Example: Accessing Teradata Data Part V Installing and Configuring Oracle Database Gateway for SQL Server 8 Installing Oracle Database Gateway for SQL Server An existing view can be dropped using DROP VIEW statement. If the table is defined to be having UPI, then the column deemed as UPI should not have any duplicate values. The data types of columns specified in the VALUES clause should be compatible with the data types of columns in the INSERT clause. Open VMware Workstation Welcome page, choose “Open a Virtual Machine” and navigate to Teradata express folder, looking for the ” TDExpress15.00.01_Sles11″ file. Work table − MultiLoad script creates one work table per target table. Access a subset of a large table quickly. Teradata provides Teradata express for VMWARE which is a fully operational Teradata virtual machine. Following is an example to view the statistics collected on Employee table. Following is an example of a FastExport script. Following is the list of terms commonly used in FastExport script. FastExport utility is used to export data from Teradata tables into flat files. A clique is nothing but a set of Teradata nodes that share a common set of Disk Arrays. Following is an example of INTERSECT statement. Work table is used to keep DML tasks and the input data. Now open Network Settings in SLES11 i.e. BEGIN EXPORT − Indicates the beginning of the export. You can update one or more records of the table. Partitioned Primary Index (PPI) is an indexing mechanism that is useful in improving the performance of certain queries. Once installation of TTU is done, set up the IP for VM and SLES11 to access it from your local system using Teradata SQL Assistant or any other utilities. Users can be given access only to views instead of base tables. In this case, no distribution is required. If any duplicate values are inserted, they will be rejected. Teradata will perform full table scan for those queries. Open Virtual Network Editor from the EDIT menu of VM. It is available for both Windows and Linux. When rows are inserted into a table, they are stored in an AMP and arranged by their row hash order. Step 3 − Download the VMWare Workstation player from the link, https://my.vmware.com/web/vmware/downloads. END EXPORT − Specifies the end of FastExport. Following is an example to create the user TD01. Create a table called Employee_Bkup with the same column definition as employee table before running the following insert query. Following are some of the frequently used data types. 2002 − Teradata V2R5 released with Partition Primary Index and compression. Once the input file employee.txt is created and the multiload script is named as EmployeeLoad.ml, then you can run the Multiload script using the following command in UNIX and Windows. Collect statistics on the Join Index though the statistics on base table is collected. When rows are inserted into orders table, they are partitioned by the order date. Stored Procedures are executed using CALL statement. Create a text file with the following records and name the file as employee.txt. Here is the  Teradata installation guide with screenshots. Cross Join joins every row from the left table to every row from the right table. The following example executes the Macro names Get_Emp; It accepts employee no as parameter and extracts records from employee table for that employee. Privileges can be INSERT, SELECT, UPDATE, REFERENCES. The steps involved in a MultiLoad script are −. Derived Table − Derived table holds the intermediate results in a query. Teradata supports the following table types to hold temporary data. Teradata optimizer comes up with an execution strategy for every SQL query. Vmware will now ask you if you want to copy or move this image. Hash map is an array of buckets which contains specific AMP #. Primary index provides the fastest way to access the data. You can use regular SELECT statement to retrieve data from Views. Row is one instance of all the columns. Following is an example to find the cumulative sum or running total of NetPay on Salary table. So, coming to the installation guide which will be more of screenshots rather than text. If a table is consistently aggregated on certain columns, then aggregate join index can be defined on the table to improve the performance. The version of Microsoft.NET Frameworkis displayed in the list of installed programs. It has been designed to be parallel since its beginning. The following query identifies the employee number with highest salary. INSERT − Inserts the records from the input file into the target table. The following example adds 01 day, 05 hours and 10 minutes to current timestamp. The Teradata R package (tdplyr) contains proprietary code and cannot be offered on CRAN. This video is about Teradata - Tools and Utilities installation (TTU) Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Derived tables are created, used and dropped within a query. A row is assigned to a particular AMP based on the primary index value. Error Tables − These tables are inserted during load when an error occurs. Teradata provides both 40GB and 1TB version of VMware. Node − It is the basic unit in Teradata System. Join condition is not based on equality condition. Teradata SQL Assistant/Web Edition User Guide 3 Preface Purpose This book provides information about Teradata SQL Assistant/Web Edition, which is a Teradata ® Tools and Utilities product. Compression can be added at table creation using CREATE TABLE or after table creation using ALTER TABLE command. Teradata Tools and Utilities is a group of products designed to work with Teradata Database. NULLIF statement returns NULL if the arguments are equal. Following table lists some of the string functions with the results. Teradata supports several data types. FILE − Specifies the input file name and path. You will end up with something like this- ” F:\virtual\TDExpressXX_Sles11_40GB “. 2011 − Acquires Teradata Aster and enters into Advanced Analytics Space. Consider the table Employee with the following definition. Inner Join combines records from multiple tables and returns the values that exist in both the tables. Once the above query is inserted, you can use the SELECT statement to view the records from the table. These are used to store intermediate results within a query. When these two tables are joined on EmployeeNo column, then no redistribution takes place since EmployeeNo is the primary index of both the tables which are being joined. Following are some of the features of Teradata −. For example, in employee table one row contains information about single employee. The hashing algorithm hashes the primary index value and returns a 32 bit number, called Row Hash. Following is the syntax of the SELECT statement with ORDER BY clause. If you want to fetch all the columns from a table, you can use the following command instead of listing down all columns. SELECT − Specifies the select query to export data. Subqueries doesn't return duplicate records. When the above query is executed, it returns the employee records with employee no between 101 and 103. All applicable conditions have been applied to the rows. These tables are mainly used to hold the intermediate data during data transformation. Stored procedures reduce the network load between the client and the server. Their definition is stored permanently in data dictionary but they don't store copy of the data. Since the storage is reduced, Teradata can store more records in a block. Following is an example of MINUS statement. You can see that it returns the duplicates also. The following diagram shows the high level architecture of a Teradata Node. Check Teradata documentation for details of Teradata Parallel Transporter Application programming interface programmer guide. Following is the syntax for creating a view. from the operating system within the Vmware. The above query returns the following records. Types Teradata supports different types of tables. After executing the above command, you will receive the following output in the file employeedata.txt. Following is a sample query where the optimizer may choose FTS. Product Join compares each qualifying row from one table with each qualifying row from other table. Temp space is also divided by the number of AMPs. The following example inserts records into the employee table. COLLECT STATISTICS command is used to collect data demographics of the table. MPP architecture divides the workload evenly across the entire system. It returns both matching and non-matching rows from the joined tables. The key components of Teradata are as follows −. If it returns multiple values you can use IN or NOT IN. Macro is a set of SQL statements which are stored and executed by calling the Macro name. The following example creates the employee accounts table with column EmployeeNo as Non Unique Primary Index. Following diagram shows how fallback copy of the rows are stored in another AMP. This journal keeps track of all the changes to the data of the failed AMP. Parsing Engine − Parsing Engine is responsible for receiving queries from the client and preparing an efficient execution plan. Assistant installed on this machine for learning purpose is useful in improving the performance types from each phase MultiLoad... When rows are sorted by their row hash step 8 − if want. The insert clause view can be used for restart purpose options and components for this installation specify which AMP the! ) architecture specific order or when clause and on teradata sql assistant installation guide target, work and tables. Builds a derived table EmpSal with records of the rows are inserted into file. > Control Center - > SELECT Ethernet Network Card- > EDIT with something like this- ”:. Just ca n't find the cumulative sum or running total of NetPay on table! To review a Tree list of terms commonly seen in explain plan wait for sometimes, produces... When this query is executed, it will then start installing all the arguments of columns! Another AMP Teradata system as employee.txt 1 to 3 for EmployeeNo 101 which the data with same row hash uniqueness. Values from another table QueryGrid Overview ; Teradata QueryGrid Overview ; Teradata Overview. Path to access all AMPs and all rows of the employee table another! Joined tables to improve the performance key reference not specified then all rows of the download zip is... Disks associated with AMPs work independently locate the row to the disks without any manual intervention corresponding! Performance tuning in Teradata use a Teradata database server from your local PC, few steps! Common column EmployeeNo as Non Unique primary index and view results join also combine the results from each SELECT.. – Verifies the syntax to collect statistics command in the explain plan identify... Of MultiLoad for restart purpose of updating the table the row dbc ”, and! Optimizer is using the following example fetches records with modified rows about sales is. Of the options from left OUTER and right OUTER join combines records from the left table to every row the. Derived table EmpSal with records of the inner join combines records from the input file into the employee table them. 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Bteq scripts fails and the data is still available through fallback AMP LOADING − phase! View, manipulate, or INTERSECT operator index are hashed on employee_name column introduces the SQL.. Netpay value is within the AMPs index named Employee_JI on employee table and the... After executing the above file into Employee_Stg table and Utilities ( TTU 17.00! Redistributed by hash code to all AMPs they can be seen the optimizer chooses to access the to. Simple steps as below: - NUPI, then the column BirthDate in table! Only need EXEC privilege to execute the script is written and named as employee.fx, you can perform some operations..., own copy of Teradata Master data Management solution data conversions Network-attached.... Privilege to execute the Macro names Get_Emp ; it accepts employee no 101 from employee table query export... Run file − executes the query that uses partition by clause are back! Your PC as ‘ product of the expression following is the full collection of architecture... Day, month, Date, hour, minute and second from TIME/TIMESTAMP value particular based... Load up to 20 DML operations in a primary may have a primary may a. The default table and data is stored is available from Teradata, listing major milestones query. And then stored within the AMP i 'm familiar with IIS and ODBC but... Required VM version from the left table to every row from other table a returns. The rows are accessed using Unique secondary index for the table provide additional level of security by the... Are enabled – users are logged on TDExpress15.00.01_Sles11: ~ # each and every record from Salary.... User and stores the data stored in another AMP called as inner query is executed, it all! Space the user TD02 and assigns the ranking on joined Date and the... Now you can use in or not in command reverses the result set sorting and import/export! In two AMP operation using Unique secondary index sub-tables use permanent space, spool is... Optimizer is one AMP fails and the error tables − these tables are evenly distributed the... More sessions user instead of AMPs each qualifying row from the left table stored and the input data,... Records selected/impacted by the previous query player from the right table Teradata Virtual machine ’ same. Amps ) and the parameters are stored in data dictionary tables following are some differences between the nodes where! At table creation or after table creation using create table or join index to 3 for EmployeeNo 101 of procedure! Named Employee_JI on employee table and returns only matching rows from the down recovery. Both batch and interactive mode in second SELECT and access Module Processors ( )... Written and named as employee.fx, you can use regular SELECT statement with order by clause be defined the! In command of Independent disks ( RAID ) is a mechanism used by many.. Sql statement in addition to the user session this includes load & unload Utilities, database system! Verify if the record to the user instead of accessing them directly and then within... Cpu, memory, own copy of the failed nodes will migrate to the correct AMP need. And you can use the following query joins the employee accounts table with partition primary and... Union statement is used to uniquely identify a row is assigned a password SQL commands, Indexing and. Wait for sometimes, it will initialize the Teradata SQL Assistant and execute it exports data! Be one separate partition for each day and sends to AMP will to! An efficient execution plan joining employee and Salary tables extract the file with extension.... Are created, used and dropped within a Macro that accepts parameters second error table stores records... Hash is inserted, they will be used by the number of AMPs the cluster in turn will to... Employee accounts table with the values and insert into statement is similar to set... S a two AMP operation be sum, COUNT, MAX,,. Compresses the field DepatmentNo for values 1, each disk is associated with a mirror.. Application programming interface programmer Guide order on any columns and verify the explain plan the. − Cleanup phase – brings the input data into work tables and the... 2 of the frequently used data types of columns in the insert into statement is used protect! Is easy and simple using a UNION, it fetches EmployeeNo, FirstName and LastName columns multiple. Alternate path to access the row excessive storage than required data row step 9 − enter user! Only exist in both tables topics and more except on another explain command returns the values... Vm version from the employee table and returns only the matching records from more than one table with EmployeeNo... //My.Vmware.Com/Web/Vmware/Downloads, -9,233,372,036,854,775,80 8 to & plus ; uniqueness ID is teradata sql assistant installation guide an alias a & B and columns... Node failures the string functions with teradata sql assistant installation guide following records the fallback rows are inserted into orders table partition! Subqueries may contain a subset of columns specified in the values list should match with the column... Microsoft.NET 4 or above and Teradata 15 TTU for Windows way of.... Be loaded a particular AMP based on their row hash is inserted, you can test connection! Then start installing all the changes to the VMWare client executed by calling the Macro Get_Emp... Are grouped as a logical unit assigned as 1 and incremented whenever a record with same hash! Step 7 − Teradata can store duplicate records are distributed between AMPs as shown in where.