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86 lines
3.1 KiB
SQL
86 lines
3.1 KiB
SQL
/*
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First, create a two-column table composed of urn & urnParts
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This table will only contain distinct URNs which only exist in metadata_aspect but not in metadata_index
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urn: Actual dataset URN
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urnParts: Stripped dataset URN which only contains fields of the dataset URN
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Example dataset_urn_parts table:
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+-----------------------------------------------------+------------------------------------+
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| urn | urn_parts |
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+-----------------------------------------------------+------------------------------------+
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| urn:li:dataset:(urn:li:dataPlatform:ambry,aaa.2,EI) | urn:li:dataPlatform:ambry,aaa.2,EI |
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+-----------------------------------------------------+------------------------------------+
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*/
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CREATE TEMPORARY TABLE dataset_urn_parts
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SELECT urn,
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substring(urn, 17, urnLength - 17) AS urn_parts # len("urn:li:dataset:(") = 16 and indexing in SQL starts at 1
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FROM (SELECT DISTINCT urn,
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length(urn) AS urnLength
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FROM metadata_aspect
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WHERE urn NOT IN (SELECT DISTINCT urn
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FROM metadata_index
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WHERE aspect="com.linkedin.common.urn.DatasetUrn")
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AND urn RLIKE "^urn:li:dataset:\\(urn:li:dataPlatform:[^:,]+,[^:,]+,[^:,]+\\)$"
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AND version=0)
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AS
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dataset_urn_parts;
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/*
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Parse platform field of the dataset URN and insert these as rows into the index table
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*/
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INSERT INTO metadata_index
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(urn,
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aspect,
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path,
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stringVal)
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SELECT urn,
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"com.linkedin.common.urn.DatasetUrn",
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"/platform" AS path,
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substring_index(urn_parts, ',', 1) AS stringVal
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FROM dataset_urn_parts;
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/*
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Parse datasetName field of the dataset URN and insert these as rows into the index table
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*/
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INSERT INTO metadata_index
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(urn,
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aspect,
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path,
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stringVal)
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SELECT urn,
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"com.linkedin.common.urn.DatasetUrn",
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"/datasetName" AS path,
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substring_index(substring_index(urn_parts, ',', 2), ',', -1) AS stringVal
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FROM dataset_urn_parts;
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/*
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Parse origin field of the dataset URN and insert these as rows into the index table
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*/
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INSERT INTO metadata_index
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(urn,
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aspect,
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path,
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stringVal)
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SELECT urn,
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"com.linkedin.common.urn.DatasetUrn",
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"/origin" AS path,
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substring_index(urn_parts, ',', -1) AS stringVal
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FROM dataset_urn_parts;
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/*
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Parse platformName field of the data platform URN and insert these as rows into the index table
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*/
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INSERT INTO metadata_index
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(urn,
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aspect,
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path,
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stringVal)
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SELECT urn,
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"com.linkedin.common.urn.DatasetUrn",
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"/platform/platformName" AS path,
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substring_index(substring_index(urn_parts, ',', 1), ':', -1) AS stringVal
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FROM dataset_urn_parts;
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/*
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Get rid of dataset_urn_parts table
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*/
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DROP TEMPORARY TABLE dataset_urn_parts; |