Tech-Discussion

Period Data Type In the warehouse, you usually save a record with start_date and end_date. If you want to filter a record based on these dates, then you have to use both date columns. MS-SQL Server We can use a WHERE clause as below: In Snowflake,   we can use a similar approach as above; however,  we can use the PERIOD DATA TYPE  as follows: For more details, refer to the Period-DataType  or  Period-Function   sections. You can see multiple use cases for the PERIOD data type. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series              

Clear the cache When you are working on query performance, you have to clear the cache. MS-SQL Server We can achieve it as follows: In Snowflake,   we can use ALTER_SESSION or ALTER WAREHOUSE  as follows: Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series          

Show Columns of a Table Sometimes, we need to check the columns of a particular table. MS-SQL Server We can achieve it as follows: In Snowflake , we can  use SHOW_COLUMNS  as follows: For more details, refer to the SHOW_COLUMNS section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series        

Extract a Year from the DATE Sometimes, we need to extract the year component from a given date. MS-SQL Server We can achieve it as follows: In Snowflake , we use EXTRACT as follows: For more details, refer to the EXTRACT section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series      

Parse and Save XML Sometimes, we need to parse an XML file and save it in a table. MS-SQL Server We can achieve it as follows: In Snowflake , we use PARSE_XML  as follows: For more details, refer to the PARSE_XML section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series      

Convert Data Type - Decimal to Integer Sometimes, for various reasons, we need to convert decimal values to integer values. MS-SQL Server We can achieve it as follows: In Snowflake , we use EXTRACT as follows: Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series      

Filter Columns in Result Grid When the result set contains numerous columns, it becomes challenging to identify the columns we need. MS-SQL Server The result grid does not allow us to select only the required columns. As a workaround, we need to explicitly limit the columns in the SELECT clause. In Snowflake , we use the filter provided in the Result Grid  as follows: Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series      

Create or Alter Table - Add Column You design a table to meet your current requirements, and after a few days, you might need to add an additional column to the existing table. MS-SQL Server We can achieve it by altering the table structure as follows: In Snowflake ,   we can use a similar approach as above; however, we can make use of ALTER  as follows: For more details, refer to the ALTER section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series    

Table Structure - Describe  Sometimes, we need to look at how a table is arranged to understand it better. MS-SQL Server We can achieve it as follows: In Snowflake , we use DESC  as follows: For more details, refer to the DESC section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series  

PIVOT - Custom alias to column name When we are performing a PIVOT operation, we must provide aliases for the generated columns. MS-SQL Server We can achieve it as follows: In Snowflake , we use   PIVOT  as follows: For more details, refer to the PIVOT section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series

Row Comparison - HASH When we need to compare data across all columns in two particular tables. MS-SQL Server We can achieve it as follows: In Snowflake , we use HASH  as follows: For more details, refer to the HASH section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series

  ORDER BY ALL - SORTING When we fetch data, we sometimes need to sort it. If there are limited columns, then it is fine. Suppose there are multiple columns, then you have to mention the entire list of columns in an order by clause, which is a tedious job. MS-SQL Server We can achieve it as follows: In  Snowflake ,    we can use a similar approach as above; however, we can make use of  ORDER BY ALL  as follows: For more details, refer to the  ORDER BY ALL  section. Yogesh Shinde LinkedInProfile <<< Back   Next >>> Snowflake Vs MS-SQL - Series    

  Last Value Whenever we are sorting out the data and want to find the last value in the series. MS-SQL Server We can achieve it as follows: In  Snowflake ,    we can use a similar approach as above; however, we can make use of  LAST_VALUE  as follows: For more details, refer to the  LAST_VALUE  section. Yogesh Shinde LinkedInProfile <<< Back   Next >>> Snowflake Vs MS-SQL - Series     

Trigonometry Functions - Geometry We rarely need to use trigonometric functions during calculations. MS-SQL Server We can achieve it as follows: In  Snowflake ,   we use   SIN  as follows: For more details, refer to the  SIN  section. Yogesh Shinde LinkedInProfile <<< Back   Next >>> Snowflake Vs MS-SQL - Series     

  Split String into Different Columns Suppose your application stores the name of an employee as a full name, and while retrieving, you want to separate it out as first name, middle name & last name. MS-SQL Server We can achieve it as follows: In Snowflake ,  we can make use of SPLIT_PART  as follows: For more details, refer to the SPLIT_PART section. Yogesh Shinde LinkedInProfile <<< Back Next >>> Snowflake Vs MS-SQL - Series

Multi-Table Insert based on condition Usually, we insert the data into a single table; however, if you want to insert records into different tables based on a value. MS-SQL Server We can achieve it as follows: In  Snowflake ,   we can use  the same query as above; however, we can use   INSERT FIRST  as follows: For more details, refer to the  INSERT FIRST  section. Also, please refer to the earlier article regarding INSERT ALL -  LINK . Yogesh Shinde LinkedInProfile <<< Back   Next >>> Snowflake Vs MS-SQL - Series