teradata

问题 I got this Teradata failure 7545 Identity Column is over its limit, but I am only insert a few hundreds records and i have already change data type from INT to BIGINT. Here is my create table syntax, I am really puzzled why Teradata was not happy? CREATE TABLE LOCATION ( LOCATION_ID BIGINT GENERATED BY DEFAULT AS IDENTITY (START WITH 1 INCREMENT BY 1 MAXVALUE 1000000) , .... Any insight would be greatly appreciated 回答1: Your definition defaults to NO CYCLE and MAXVALUE is set to 1000000 , so

问题 In functions like REGEXP_REPLACE , REGEXP_SIMILAR we need to mention the regular expression for matching a part of the string. Does the regex follow same syntax as that of regex in java or does Teradata have a separate syntax for regular expressions? 回答1: It's the same as PCRE (C, Java, PHP, Javascript). For example, let's say you have a bunch of emails and you want just the web domains from that you would use SELECT RegExp_Replace(email, '^.*@(.*)', '\1', 1, 0, 'i') FROM emails; You could

问题 I have been stuck into a question. The question is I want to get all Table name with their Row Count from Teradata. I have this query which gives me all View Name from a specific Schema. I ] SELECT TableName FROM dbc.tables WHERE tablekind='V' AND databasename='SCHEMA' order by TableName; & I have this query which gives me row count for a specific Table/View in Schema. II ] SELECT COUNT(*) as RowsNum FROM SCHEMA.TABLE_NAME; Now can anyone tell me what to do to get the result from Query I

问题 I have been stuck into a question. The question is I want to get all Table name with their Row Count from Teradata. I have this query which gives me all View Name from a specific Schema. I ] SELECT TableName FROM dbc.tables WHERE tablekind='V' AND databasename='SCHEMA' order by TableName; & I have this query which gives me row count for a specific Table/View in Schema. II ] SELECT COUNT(*) as RowsNum FROM SCHEMA.TABLE_NAME; Now can anyone tell me what to do to get the result from Query I

问题 I have a table with the following columns and data. Data describes certain customer activity periods cust_id s_date e_date 11111 01.03.2014 31.03.2014 11111 10.04.2014 30.04.2014 11111 01.05.2014 10.05.2014 11111 15.06.2014 31.07.2014 22222 01.04.2014 31.05.2014 22222 01.06.2014 30.06.2014 22222 01.07.2014 15.07.2014 And I want to write a query which gives this result: cust_id s_date e_date 11111 01.03.2014 10.05.2014 11111 15.06.2014 31.07.2014 22222 01.04.2014 15.07.2014 The query result

问题 I have a table with the following columns and data. Data describes certain customer activity periods cust_id s_date e_date 11111 01.03.2014 31.03.2014 11111 10.04.2014 30.04.2014 11111 01.05.2014 10.05.2014 11111 15.06.2014 31.07.2014 22222 01.04.2014 31.05.2014 22222 01.06.2014 30.06.2014 22222 01.07.2014 15.07.2014 And I want to write a query which gives this result: cust_id s_date e_date 11111 01.03.2014 10.05.2014 11111 15.06.2014 31.07.2014 22222 01.04.2014 15.07.2014 The query result

问题 I am trying to export from hive table to teradata using TDCH connector, I am getting below errror:- 15/05/07 08:01:03 INFO tool.ConnectorExportTool: java.lang.NoClassDefFoundError: org/apache/hadoop/hive/metastore/api/MetaException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:190) at com.teradata.connector.common.tool.ConnectorJobRunner.runJob(ConnectorJobRunner.java:81) at com.teradata.connector.common.tool.ConnectorExportTool.run(ConnectorExportTool.java

问题 There is an old stack post (First-in-first-out (FIFO) inventory costing) that contains the Set-based Speed Phreakery: The FIFO Stock Inventory SQL Problem: (https://www.simple-talk.com/sql/performance/set-based-speed-phreakery-the-fifo-stock-inventory-sql-problem/). I have been trying to adapt it from SQL Server to Teradata SQL but have discovered that: (a) Teradata can only handle one CTE with statement (b) You cannot use cross apply (c) You cannot use hint indexes? My questions are: Is

问题 I am currently trying to split one value with percentage column. But as most of percentages values are 1/3, I am not able to get aboslute 100% with two decimal points in the value. For example: Product Supplier percentage totalvalue customer_split decimal(15,14) (decimal(18,2) decimal(18,2) -------- -------- ------------ --------------- --------------- Product1 Supplier1 0.33 10.00 3.33 Product1 Supplier2 0.33 10.00 3.33 Product1 Supplier3 0.33 10.00 3.33 So, here we are missing 0.01 in the

问题 I am currently trying to split one value with percentage column. But as most of percentages values are 1/3, I am not able to get aboslute 100% with two decimal points in the value. For example: Product Supplier percentage totalvalue customer_split decimal(15,14) (decimal(18,2) decimal(18,2) -------- -------- ------------ --------------- --------------- Product1 Supplier1 0.33 10.00 3.33 Product1 Supplier2 0.33 10.00 3.33 Product1 Supplier3 0.33 10.00 3.33 So, here we are missing 0.01 in the