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Database Gateway for Teradata User's Guide - Contents
Contents → Database Gateways 2 Teradata Gateway Features and Restrictions 2.1 Using the Pass-Through Feature … Compatibility Issues for Teradata 2.7.1 Schema Considerations 2.7.2 Naming Rules 2.7.2.1 Rules for Naming … links 2.9 Known Problems 2.9.1 Teradata LONG VARCHAR Data Type 2.9.2 Schema Names and PL/SQL 2.9.3 Data … More Complex Query
Supported SQL Syntax and Functions
Oracle Teradata → B.2.2.4 String Functions Oracle Teradata INSTR POSITION
Supported SQL Syntax and Functions
Oracle Teradata → B.2.2.2 Comparison Operators Oracle Teradata = = > > = >=, !=, ^= <>, != IS NOT NULL IS NOT NULL IS NULL IS NULL
Supported SQL Syntax and Functions
Oracle Teradata → B.2.2.3 Group Functions Oracle Teradata AVG AVG COUNT COUNT MAX MAX MIN MIN SUM SUM
Supported SQL Syntax and Functions
Oracle Teradata → B.2.2.5 Other Functions Oracle Teradata ABS ABS EXP EXP LOG(a, b) LOG10(b) / LOG10(a) POWER ** SQRT SQRT
Supported SQL Syntax and Functions
Oracle Teradata → B.2.2.1 Arithmetic Operators Oracle Teradata + + - - * * / /
Data Type Conversion
Teradata Oracle Comment → BLOB LONG RAW BYTE RAW - BYTEINT NUMBER(3) BYTEINT range is -128 to +127 CHAR CHAR - CHAR CHARACTER SET UNICODE CHAR - CLOB LONG DATE CHAR(10) - DECIMAL NUMBER(p[,s]) - FLOAT FLOAT(24) with precision single precision float INTEGER NUMBER(10) NUMBER range is -2,147,483,648 to 2,147,483,647 INTERVAL CHAR - LONG VARCHAR CHARACTER SET UNICODE LONG if Oracle DB Character Set = Unicode. Otherwise,
Configuring Oracle Database Gateway for Teradata
7.7.5 Multiple Teradata Databases Example: Accessing Teradata Data → created, you can verify the connection to the new Teradata databases, as in the following: SQL
Configuring Oracle Database Gateway for Teradata
7.7.5 Multiple Teradata Databases Example: Accessing Teradata Data → created, you can verify the connection to the new Teradata databases, as in the following: SQL
Installing Oracle Database Gateway for Teradata
6 Installing Oracle Database Gateway for Teradata → procedure for Oracle Database Gateway for Teradata. To install the gateway, follow these steps … Requirements for Oracle Database Gateway for Teradata\". Run the Oracle Universal Installer. See \"Step … appear depend on your platform. See Table 6-3 for a description of the installation procedure of Oracle Database Gateway for Teradata
Supported SQL Syntax and Functions
B.2.2 Functions Supported by Teradata → equivalent Teradata functions: Arithmetic Operators Comparison Operators Group Functions String Functions Other Functions
Teradata Gateway Features and Restrictions
2 Teradata Gateway Features and Restrictions → After the gateway is installed and configured, you can use the gateway to access Teradata data … , pass Teradata commands from applications to the Teradata database, perform distributed queries, and … Gateway Session IDLE Timeout Database Compatibility Issues for Teradata Known Restrictions Known Problems
Teradata Gateway Features and Restrictions
2.9.1 Teradata LONG VARCHAR Data Type → cannot be used in a SQL statement that accesses a column defined as Teradata data type LONG VARCHAR … . You cannot use SQL*Plus to select data from a column defined as Teradata data type LONG VARCHAR when … Interface to access such data in a Teradata database. LONG VARCHAR data types must be NULLABLE for INSERT
Configuring Oracle Database Gateway for Teradata
7 Configuring Oracle Database Gateway for Teradata → Teradata: Configure the Gateway Initialization Parameter File Configure Oracle Net for the Gateway … Encrypt Gateway Initialization Parameter Values Configure the Gateway to Access Multiple Teradata Databases
Installing Oracle Database Gateway for Teradata
6 Installing Oracle Database Gateway for Teradata → procedure for Oracle Database Gateway for Teradata. To install the gateway, follow these steps … Requirements for Oracle Database Gateway for Teradata\" section. Run the Oracle Universal Installer See … which they appear depend on your platform. See Table 6-2 for a description of the installation procedure of Oracle Database Gateway for Teradata.
Case Studies
3.8 Case 3: Joining Teradata Tables → Case 3 demonstrates the following: Joins between Teradata tables. Subselects. The query retrieves … information from three Teradata tables and relates the employees to their department name and salary
Data Dictionary
C.1.3 Direct Queries to Teradata Tables → Queries issued directly to individual Teradata system catalog tables are allowed but they return … different results because the Teradata system catalog table column names differ from those of the data … dictionary view. Also, certain columns in a Teradata system catalog table cannot be used in data dictionary processing.
Data Dictionary
View Name Teradata System Table Name → ALL_CATALOG DBC.TablesX + DBC.IndicesX ALL_COL_COMMENTS DBC.ColumnsX ALL_CONS_COLUMNS DBC.Indices ALL_CONSTRAINTS DBC.IndicesX ALL_IND_COLUMNS DBC.Indices + DBC.Tables + DBC.Columns ALL_INDEXES DBC.Indices ALL_OBJECTS DBC.IndicesX + DBC.TablesX ALL_TAB_COLUMNS DBC.ColumnsX + DBC.TablesX ALL_TAB_COMMENTS DBC.Tables ALL_TABLES DBC.TablesX ALL_USERS DBC.Databases ALL_VIEWS DBC.Tables DBA_CATALOG DBC.Tables
Configuring Oracle Database Gateway for Teradata
7 Configuring Oracle Database Gateway for Teradata → Teradata: Configure the Gateway Initialization Parameter File Configure Oracle Net for the Gateway … Encrypt Gateway Initialization Parameter Values Configure the Gateway to Access Multiple Teradata Databases
Teradata Gateway Features and Restrictions
2.7 Database Compatibility Issues for Teradata → Teradata and Oracle databases function differently in some areas, causing compatibility problems