24 lines
373 B
MySQL
24 lines
373 B
MySQL
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COPY (SELECT row_to_json(t) FROM (
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SELECT
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pmcid AS "id",
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'pmcid' AS "type"
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FROM data
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WHERE pmcid IS NOT NULL AND pmcid != ''
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UNION ALL
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SELECT
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pmid AS "id",
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'pmid' AS "type"
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FROM data
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WHERE pmid IS NOT NULL AND pmid != ''
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UNION ALL
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SELECT
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doi AS "id",
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'doi' AS "type"
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FROM data
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WHERE doi IS NOT NULL AND doi != ''
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) t) TO STDOUT;
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