IF ELSE in Teradata BTEQ

BTEQ utility is one of the advantages of Teradata over other extraction utilities. The advantage of BTEQ utility is its error handling ability and conditional execution. It is more common that the query execution is often compared against the conditional flow in programming languages and programmers may end up choosing JDBC connection to have control… Read More »

Types of Data Structures

Data structures are broadly classified into primitive and non-primitive data structures. The non-primitive data structure is further classified into linear and non-linear data structures. Primitive Data Structures Primitive data types or structures are predefined data types. They are supported by all programming languages. Examples are, Integer (int) – It is used to store the whole… Read More »

Error handling with ACTIVITYCOUNT and ERRORCODE in BTEQ

Batch Teradata Query(BTEQ) is a powerful utility in Teradata with multiple options. You can export/import tables and files and make use of them in the same sessions for checking conditions to take decisions. Based on the checks, you can perform your DDL, DML operations. In this post, we will use a very simple use case… Read More »

CREATE TABLE using SELECT in Teradata

In the other post, we saw how to create tables in Teradata and the corresponding examples for each. Here we will see how to create a table with select from another table. Let us see the basic syntax of the same. Create table without data and index Syntax In the above example, please note the… Read More »

CREATE TABLE in Teradata with examples

There are different ways to create tables in Teradata. We can also define the tables in such a way that it will allow or not allow the duplicates. We can also create tables with data from another table on the fly. Create table – Default We can create a table in Teradata with the default… Read More »

Difference between ISNULL and COALESCE in SQL

In this article, we will see the difference between ISNULL and COALESCE in SQL Server. Both ISNULL and COALESCE evaluates the expression for NULL and returns a non-null value. ISNULL The ISNULL function replaces NULL with a specified value. ISNULL ( check_expression, replacement_value ) It contains two parameters. The first parameter is to evaluate the… Read More »