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23 тыс
956

0:24

SQL | Count(*) vs Count(1) Vs Count(colname)  #sqltips

SQL | Count(*) vs Count(1) Vs Count(colname) #sqltips

Learn at Knowstar

What is the difference in SQL between Count(*) , Count(1) and Count(colname)? How to install SQL Server for practice?

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7 тыс
252

0:21

SQL Tips | How to deal with Column Names with Spaces #sqltips

SQL Tips | How to deal with Column Names with Spaces #sqltips

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In this video, we learn a SQL tip to deal with Column Names with spaces How to install SQL Server for practice?

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16 тыс
604

0:29

SQL Trick Using COALESCE function #sqltricks #sqltips

SQL Trick Using COALESCE function #sqltricks #sqltips

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In this video, we learn neat SQL Trick using COALESCE function. How to install SQL Server for practice?

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7 тыс
312

0:31

SQL Tricks | You Must Know This | System Stored Procedure | Metadata  #sqltips

SQL Tricks | You Must Know This | System Stored Procedure | Metadata #sqltips

Learn at Knowstar

sqltips In this SQL Tip, we use a system stored procedure to find all the object metadata information about a table. Must Do Data ...

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5 тыс
319

0:20

SQL Trick to Add Leading Zeroes ! #sqltips

SQL Trick to Add Leading Zeroes ! #sqltips

Learn at Knowstar

In this video, we discuss a SQL Trick to add leading zeroes to a number using SQL Format function! How to install SQL Server for ...

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5 тыс
374

0:55

SQL Tips | Know These Wildcards !  #sqltips

SQL Tips | Know These Wildcards ! #sqltips

Learn at Knowstar

In this SQL Tip, we explore the different SQL wildcards that are helpful for SQL Pattern Matching! Must Do Data Analytics ...

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6 тыс
426

0:55

SQL Tips | Table Data Comparisons | Set Operators  #sqltips

SQL Tips | Table Data Comparisons | Set Operators #sqltips

Learn at Knowstar

SQL - Use these Set Operators for making Table data comparisons. UNION UNION ALL EXCEPT INTERSECT Must Do Data ...

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16 тыс
913

1:00

SQL Tips | Most Useful Function - UNPIVOT - Columns to Rows  #sqltips

SQL Tips | Most Useful Function - UNPIVOT - Columns to Rows #sqltips

Learn at Knowstar

This is one of the most useful SQL functions to convert columns into rows - or Unpivot the data. Must Do Data Analytics ...

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3 тыс
200

0:59

SQL Trick | Concatenate With Separator  #sqltips

SQL Trick | Concatenate With Separator #sqltips

Learn at Knowstar

In this excellent SQL Tip from LearnSQL.com, we use the CONCAT_WS function to concatenate strings with a separator. Must Do ...

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8 тыс
431

0:22

SQL | Don't Make This Mistake ! #sqltips

SQL | Don't Make This Mistake ! #sqltips

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In this SQL tip, we see a common SQL writing mistake made by programmers. How to install SQL Server for practice?

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5 тыс
364

0:32

SQL | Easiest Trick to Sort Alphanumeric Data !  #sqltips

SQL | Easiest Trick to Sort Alphanumeric Data ! #sqltips

Learn at Knowstar

sqltips Learn the easiest trick to sort alphanumeric data in SQL! Must Do Data Analytics Certifications - Google Data Analytics ...

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3 тыс
258

0:30

SQL | PIVOT is Not Confusing ! PIVOT Syntax  #sqltips  #sqlqueryinterviewquestionsandanswers

SQL | PIVOT is Not Confusing ! PIVOT Syntax #sqltips #sqlqueryinterviewquestionsandanswers

Learn at Knowstar

Here we make writing a PIVOT Query really simple by explaining the Step-By-Step PIVOT Syntax. Must Do Data Analytics ...

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3 тыс
222

0:36

SQL | Don't Miss These LEAD / LAG Tricks |  #sqltips

SQL | Don't Miss These LEAD / LAG Tricks | #sqltips

Learn at Knowstar

Check out this video for awesome LEAD / LAG Tricks from LearnSQL.com. #sqltips #sqlwindowsfunctions Must Do Data Analytics ...

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6 тыс
181

0:25

SQL Trick ! Date Formatting Made Easy !  #sqltips

SQL Trick ! Date Formatting Made Easy ! #sqltips

Learn at Knowstar

In this video tutorial, we learn about a SQL Trick to quickly format Date values and extract the Period (YYYYMM) from date values.

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10 тыс
668

0:19

SQL Function You Must Know ! String Aggregation  #sql #sqltips

SQL Function You Must Know ! String Aggregation #sql #sqltips

Learn at Knowstar

In this video, we write a SQL Query to concatenate rows into a single delimited string. We use the SQL function STRING_AGG ...

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4 тыс
346

0:40

SQL | Must Know Trick to Handle Nulls  #sqltips

SQL | Must Know Trick to Handle Nulls #sqltips

Learn at Knowstar

In this video, we write a SQL Query to use a SQL Trick to correctly count Null and Not Null Values. #sqltips Must Do Data Analytics ...

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2 тыс
142

0:23

SQL | ACE Your Next SQL Interview  #sqltips  #sqlinterviewquestions

SQL | ACE Your Next SQL Interview #sqltips #sqlinterviewquestions

Learn at Knowstar

sqlinterviewquestions Ace Your Next SQL Interview with our awesome SQL Query Interview Playlist focusing on a practical ...

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5 тыс
107

0:07

7 SQL tips to optimize your queries👈🏻

7 SQL tips to optimize your queries👈🏻

Azurelib Academy

7 SQL Tips for Optimizing Your Queries and Boosting Performance" Tip 1: Use Indexes Wisely "Indexes are like the table of ...

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4 тыс
246

0:29

SQL | Don't make this mistake | String_Split  #sqltips

SQL | Don't make this mistake | String_Split #sqltips

Learn at Knowstar

In this SQL Tip, we write a SQL Query using the STRING_SPLIT function. Must Do Data Analytics Certifications - Google Data ...

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2 тыс
145

0:49

Why joins are generally more efficient than set operators #sqltips

Why joins are generally more efficient than set operators #sqltips

Manish Sharma

In this video, you will learn the difference between SQL Joins and SQL SET operators, two important concepts for SQL interview ...


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