Adding new changes

03_MyProjects/1.12_KenyanSalaries/1.12Salaries_ke.sql

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+SELECT LIMIT 100;
+FROM job_postings_fact 
+WHERE job_country = 'Kenya';
+
+
+SELECT 
+  jpf.job_title_short,
+  jpf.job_country,
+MIN(job_posted_date) as earliestjob,
+MAX(job_posted_date) as lastestjob,
+MIN(salary_year_avg),
+MAX(salary_year_avg),
+COUNT (job_title_short) as jobs_available,
+FROM job_postings_fact as jpf
+WHERE 
+job_title_short IN ('Data Analyst', 'Data Engineer', 'Data Scientist', 'Business Analyst', 'Senior Data Analyst', 'Senior Data Scientist')
+AND job_country = 'Kenya'
+AND salary_year_avg is NOT NULL 
+GROUP BY job_title_short,job_country
+ORDER BY jobs_available DESC;
+
+
+SELECT COUNT(*)
+FROM 
+job_postings_fact,
+WHERE job_country = 'Kenya'
+;
+
+
+SELECT COUNT(*)
+FROM 
+job_postings_fact,
+WHERE job_country = 'Kenya'
+AND 
+    salary_year_avg IS NULL
+;
+
+
+
+SELECT 
+        job_title_short,
+        COUNT(*),
+        MIN(salary_year_avg) AS Minimun_Annual$,
+        MAX(salary_year_avg) AS Maximum_Annual$,
+        ROUND(AVG(salary_year_avg)) AS average_salary
+FROM 
+        job_postings_fact,
+WHERE   job_country = 'Kenya'
+AND 
+        salary_year_avg
+AND
+        job_title_short NOT IN ('Software Engineer ')
+GROUP BY 
+        job_title_short
+ORDER BY 
+        average_salary DESC
+;

Lessons/1.10/1.10_DataModelling.sql

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+SELECT 
+    job_id,
+    job_title_short,
+    salary_year_avg,
+    company_id
+FROM 
+    job_postings_fact
+LIMIT 10;
+
+SELECT 
+    company_id,
+    name
+FROM
+    company_dim 
+LIMIT 100;
+
+SELECT *
+FROM information_schema.tables
+WHERE 
+    table_catalog='data_jobs';
+
+SELECT *
+FROM information_schema.columns
+WHERE 
+    table_catalog='data_jobs';
+
+
+SELECT * 
+FROM information_schema.table_constraints
+WHERE 
+    table_catalog= 'data_jobs' 
+AND
+    constraint_type IN ('PRIMARY KEY', 'FOREIGN KEY');
+
+SELECT * 
+FROM information_schema.key_column_usage
+WHERE 
+    table_catalog= 'data_jobs'; 
+
+PRAGMA show_tables_expanded;
+
+DESCRIBE job_postings_fact;

Lessons/1.11/1.11_Joins.sql

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+SELECT * 
+FROM job_postings_fact
+LIMIT 100;
+
+SELECT * 
+FROM company_dim
+LIMIT 100;
+
+SELECT 
+        jdf.job_title_short,
+        jdf.job_location,
+        jdf.job_via,
+        cdm.name
+FROM job_postings_fact as jdf
+JOIN company_dim as cdm
+ON jdf.company_id AND cdm.company_id
+LIMIT 100;
+
+SELECT COUNT(*)
+FROM company_dim
+WHERE name = 'CELEBe Korea Co., LTD.';
+
+SELECT
+COUNT(company_id)
+FROM job_postings_fact
+WHERE company_id = 638608;
+
+SELECT 
+        jdf.job_title_short,
+        jdf.job_location,
+        jdf.job_via,
+        jdf.company_id,
+        cdm.company_id,
+        cdm.name AS companyname
+FROM job_postings_fact as jdf
+LEFT JOIN company_dim as cdm
+ON jdf.company_id AND cdm.company_id
+LIMIT 10;
+
+SELECT * 
+FROM company_dim
+LIMIT 10; 
+
+SELECT * 
+FROM job_postings_fact
+LIMIT 10; 
+
+SELECT 
+    jdm.job_id,
+    jdm.job_title_short,
+    jdm.job_location,
+    jdm.job_via,
+    cd.company_id,
+    cd.name
+FROM job_postings_fact as jdm
+JOIN company_dim as cd
+ON jdm.company_id = cd.company_id
+LIMIT 20;
+
+
+SELECT * FROM skills_job_dim
+LIMIT 10;
+
+SELECT * FROM job_postings_fact
+LIMIT 20;
+
+SELECT * 
+FROM information_schema.tables
+WHERE table_catalog='data_jobs';
+
+SELECT * 
+FROM information_schema.columns
+WHERE table_catalog='data_jobs';
+
+
+SELECT *
+FROM information_schema.columns
+WHERE table_catalog = 'data_jobs';
+
+
+SELECT 
+    jdm.*,
+FROM job_postings_fact as jdm
+LIMIT 10;
+
+SELECT
+    sjm.*
+FROM skills_job_dim as sjm
+LIMIT 10;
+
+
+-- ////////
+
+SELECT
+    sd.*
+FROM skills_dim as sd
+LIMIT 10;
+
+
+SELECT 
+cd.* 
+FROM company_dim as cf;
+
+
+
+SELECT 
+    jpf.job_id,
+    cd.name,
+    jpf.job_title_short,
+    jpf.job_location,
+    jpf.job_country,
+    sd.skills,
+    sjd.skill_id
+FROM job_postings_fact as jpf 
+LEFT JOIN skills_job_dim as sjd
+    ON jpf.job_id = sjd.job_id
+LEFT JOIN skills_dim as sd
+    ON sd.skill_id = sd.skill_id
+LEFT JOIN company_dim AS cd 
+    on jpf.company_id = cd.company_id
+ORDER BY RANDOM()
+LIMIT 20;

Lessons/1.9/1.9_VScode_Intro.sql

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+