Showing posts with the label data-analytics

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SQL Interview Success: Unlocking the Top 5 Frequently Asked Queries

 Here are the five top commonly asked SQL queries in the interviews. These you can expect in Data Analyst, or, Data Engineer interviews. Top SQL Queries for Interviews 01. Joins The commonly asked question pertains to providing two tables, determining the number of rows that will return on various join types, and the resultant. Table1 -------- id ---- 1 1 2 3 Table2 -------- id ---- 1 3 1 NULL Output ------- Inner join --------------- 5 rows will return The result will be: =============== 1  1 1   1 1   1 1    1 3    3 02. Substring and Concat Here, we need to write an SQL query to make the upper case of the first letter and the small case of the remaining letter. Table1 ------ ename ===== raJu venKat kRIshna Solution: ========== SELECT CONCAT(UPPER(SUBSTRING(name, 1, 1)), LOWER(SUBSTRING(name, 2))) AS capitalized_name FROM Table1; 03. Case statement SQL Query ========= SELECT Code1, Code2,      CASE         WHEN Code1 = 'A' AND Code2 = 'AA' THEN "A" | "A

Data analyst in FMCG sector the real opportunities

[Demand for data analytics in FMCG] Data analyst is a great demanding career in FMCG sector. The below are the key areas where data analytics can be applied in FMCG sector. There are many areas in FMCG sector one can get great insights. I have given some most useful thought that are being used in FMCG industry. The data engineer /Scientist must have great business knowledge to get true insights. However, as a software developer, this is just a working on analytics software as per guidelines prescribed by data scientists. Consumers  Business questions: Where are your consumers? Can you identify the characteristics that bond your consumers to the brands they buy? Can you segment your consumers using those characteristics and create a consumer purchase decision tree? Can you access and translate the sentiment that your customers are saying about your company, your products and your customer service? Can you share data with your retail and convenience store customers on a regul