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David דודו Markovitz

Rating
1588.94 (2,388th) 		Reputation
25,428 (5,012th)
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Title Δ
Find the gap in ID column + select the prev/next date column +2.58
Try optimize a specific SQL query 0.00
Ignore duplicates on GROUP BY +3.71
How to split a single column values into two columns without null v... +1.87
Check the stamp on/off falls under the specified time 0.00
How to solve a spool space error with rank () over partition by SQL... 0.00
how to Write a query to display emp details of the specific row? 0.00
Connected Components -3.86
Connected Components +1.14
Connected Components +1.14
How to select all values of 'A' that match with several B&#... 0.00
How to standardize multiple values of column? -3.49
Need SQL query for hierarchical data in a flat result set -0.01
PostgreSQL: operator does not exist: timestamp without time zone ==... 0.00
oracle execution plan, trying to understand +3.05
SQL oracle add a value +3.46
How to get all parent note of particular category-id from given sql... 0.00
How to create two tables with first 75% and remaining 25% of anothe... 0.00
How can I do a GROUP_CONCAT in MySQL without an aggregate function? 0.00
Can a left join be expressed as a right join and vice versa? 0.00
Group phone numbers with SQL or PHP 0.00
MYSql search in concated columns +3.97
getting rightmost characters in a field in SQL without RIGHT() +3.27
Creating a trailing count on a table -0.96
Fill missing ID with dragged data in SQL Server table +2.91
Dynamically Select Column Based on a Bytefield 0.00
Search for a particular value in a string with commas -1.55
Display 12 months of data from the past 5 years -1.85
sql unique records puzzle +1.69
How to select the highest value after a count() | Sql Oracle +4.25
SQL server 2012 parsing XML with namespaces -3.96
How to delete rows by date when time is unknown -2.19
Return SQL Lookup values from multiple columns in a single row 0.00
Teradata SQL - Grouping Observations Close In Time Together? 0.00
Build tree from database +3.97
List all employee with salary and those with higher salary +0.05
Operand data type varchar is invalid for subtract operator. in SQL... 0.00
Error in Oracle Select statement -3.95
Regexp_replace processing result -1.31
How to get the last row of each name? +4.18
Group by UNION result 0.00
Removing replacement character � from column 0.00
SQL/REGEX puzzle/challenge How to convert ASCII art ranges with mul... 0.00
SQL Challenge/Puzzle: How to merge nested ranges? +0.15
SQL Challenge/Puzzle: How to convert ASCII art ranges to relational... -0.02
SQL Challenge/Puzzle: How to convert ASCII art ranges to relational... -0.02
How to generate row numbers ordered by non-unique values? +4.00
How to generate row numbers ordered by non-unique values? -4.00
SQL Puzzle: How to generate row numbers ? (a classic puzzle with a... -1.60
SQL Challenge/Puzzle: Given a stack trace - How to find the top ele... +1.82