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Lennart - Slava Ukraini

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1466.43 (4,523,775th) 		Reputation
5,011 (33,125th)
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Title Δ
Recursive CTE with both child and parent links 0.00
SQL algorithm with three identifiers from one table -2.01
Pick a Single Row Out of Each Set of Duplicates -1.43
Finding second highest number logic explanation +4.20
Joining two tables with different key values +0.04
db best practices: data + boolean column or just data? +0.14
DB2 System Tables Logs? 0.00
Unique constraint setting default in collumns +4.34
Composite vs Surrogate keys for Referential Integrity in 6NF -1.32
tricky sql query using CI active record +1.32
Mailbox view like Facebook, with ORDER BY before GROUP BY -2.71
Denormalized table. SQL Select -3.21
db2 alter column statement from char to varchar -0.08
How to use case on group by result in Oracle-sql 0.00
Db2 - Returning the top 5 of each category 0.00
Counting how many times each unique element appeared in the table -1.37
Multiple SELECT statements with different WHERE condition in one qu... +0.19
Make rows unchangeable in sql server +3.89
Replacing subselects with rank 0.00
sql query to select matching rows for all or nothing criteria +4.29
Factor where clauses into subqueries +0.28
JOIN with two result sets from same table? +5.15
Nested CASE..WHEN - SQL +0.90
SQL to remove Zero's in the string in MYSQL -2.20
Find Row With Data Between A Range SQL -2.13
Left Join with Case Statement in Sql Server getting ERROR 0.00
SQL error : duplicate entry for value'0' PRIMARY -1.85
How to use SUM in pivot table(CAST cannot be used in aggregate func... -3.75
Update all rows in a table based on a condition -3.65
How do you return items using a SQL command that are the most recen... -1.18
How do you find the end nodes of a graph? +1.34
dynamic sql: merge partitioned tables (annual tables into a single... 0.00
Aggregate function in Tuple Relational Calculus +0.16
SQL - operate on current condition row -1.13
Queries as SELECT statements with NOT EXISTS clauses -0.97
SQL Query, Get data from multiple tables and query result -0.23
check constraint violated sql error occur 0.00
find all parent records where all child records have a given value... +2.24
row_number or rank similar data -3.03
T-SQL: Need a way to sort NULLs to top of a resultset +3.90
Rowcounts of all tables in a database in Netezza -1.78
Update Value in Sql +0.47
I need a SQL query for comparing column values against rows in the... +5.06
In MySQL how to use SQL to get the row with the most recent date -1.30
Sql Selecting common group +0.01
Explanation on how the minus/except operator works -2.07
Mysql:Complex Update Query 0.00
MySQL Select from UNION performance issue (kills database) -3.79
Insert arbitrary value and select in the same statement MYSQL +4.17
Query to order data while maintaining grouping? -0.86