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36 lines
1.1 KiB
SQL
36 lines
1.1 KiB
SQL
DROP TABLE IF EXISTS perf;
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CREATE TABLE perf (site String, user_id UInt64, z Float64) ENGINE = Log;
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SELECT * FROM (SELECT perf_1.z AS z_1 FROM perf AS perf_1);
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SELECT sum(mul)/sqrt(sum(sqr_dif_1) * sum(sqr_dif_2)) AS z_r
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FROM(
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SELECT
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(SELECT avg(z_1) AS z_1_avg,
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avg(z_2) AS z_2_avg
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FROM (
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SELECT perf_1.site, perf_1.z AS z_1
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FROM perf AS perf_1
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WHERE user_id = 000
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) jss1 ALL INNER JOIN (
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SELECT perf_2.site, perf_2.z AS z_2
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FROM perf AS perf_2
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WHERE user_id = 999
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) jss2 USING site) as avg_values,
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z_1 - avg_values.1 AS dif_1,
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z_2 - avg_values.2 AS dif_2,
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dif_1 * dif_2 AS mul,
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dif_1*dif_1 AS sqr_dif_1,
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dif_2*dif_2 AS sqr_dif_2
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FROM (
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SELECT perf_1.site, perf_1.z AS z_1
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FROM perf AS perf_1
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WHERE user_id = 000
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) js1 ALL INNER JOIN (
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SELECT perf_2.site, perf_2.z AS z_2
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FROM perf AS perf_2
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WHERE user_id = 999
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) js2 USING site);
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DROP TABLE perf;
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