Repeated Email Detector - Coding problem | OneNoughtOne
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SQL Practice: Queries to Analytics
0/308 completed
SQL foundations
0/3
SQL Overview
5
Data Definition Language (DDL)
5
SQL Data Types
5
Filtering, ordering and expressions
0/14
Joins and relational queries
0/17
Aggregation and business metrics
0/84
Text and data quality
0/42
Account Count by Income Tier
Campus Excellence Challenge Winner
Canonical User Display Name Formatter
Cinema Highlight Feed
Commercial Email Domain Census
Customers With Net-Positive Revenue in 2021
Customers Without Purchase Activity
Daily Distinct Product Rollup
Deduplicated Email Registry
DotCom Email Compliance Audit
Dual Loan Category Qualification
Employee Home Department Resolution
Employee Record Completeness Audit
Enterprise User Email Policy Filter
Library Books Awaiting Ratings
Low Approval Problem Audit
Low-Salary Employees with Departed Managers
Message Length Policy Violations
Payroll Gender Code Toggle Report
Product Descriptions with Valid Serial Tokens
Professional Name Tag Formatter
Repeated Email Detector
Rule-Based Employee Bonus Allocation
Sales Reps Without RED Orders
Social Feed Compliance Screening
Sustainable Low-Fat Recyclable Product Filter
Type-1 Diabetes Code Screening in Patient Records
Unique Comment Count by Post
Call Metrics by Contact Pair
Coordinate Reflection Pairs
Daily Transaction Parity Ledger
DNA Sequence Pattern Signal Audit
Invoice Contact Trust Coverage Report
Major Curriculum Perfect-A Scholars
Connection Invite Acceptance Ratio
Standalone Market Term File Coverage
State City Roster with Initial-Letter Match
Daily Unbanned Trip Cancellation Rate
Dynamic Store Price Pivot Map
Invalid IPv4 Access Log Census
Polynomial Equation String Builder
Post Topic Resolution from Keyword Signals
Dates, intervals and time series
0/42
Windows, ranking and sequences
0/89
Recursive and graph queries
0/15
Apply it: reliable analytical exports
0/2
Course overview & roadmap
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