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Batch updates in PostgreSQL using UPDATE...FROM statements
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| observatory=> SELECT id, sha256_subject_spki FROM certificates WHERE id > 300 AND id < 305; | |
| id | sha256_subject_spki | |
| -----+------------------------------------------------------------------ | |
| 301 | 3EE6B341402851B27E64021A3023AAC7C1A0D2DEF27D5BCE5C2DBEB0B22DCC71 | |
| 302 | 47C7A149CA82FA7BA940A4D711D010625C6CB0B748B17016C46E25CE7ACD2B0C | |
| 303 | 8AB4E88556CBF864A5E9FD50171CD4ED8424E8F0801B99E236C810915950AE4B | |
| 304 | 5E6E52E50B5B9012817E63178BCB63BDE23CF1CC1F9458CED9B93A2BBA7DC4C6 | |
| (4 rows) | |
| observatory=> UPDATE certificates SET sha256_subject_spki = newvalues.spki | |
| observatory=> FROM ( VALUES (301, 'foo'), (302, 'bar'), (303, 'baz') ) | |
| observatory=> AS newvalues (id, spki) | |
| observatory=> WHERE certificates.id = newvalues.id; | |
| UPDATE 3 | |
| observatory=> SELECT id, sha256_subject_spki FROM certificates WHERE id > 300 AND id < 305; | |
| id | sha256_subject_spki | |
| -----+------------------------------------------------------------------ | |
| 301 | foo | |
| 302 | bar | |
| 303 | baz | |
| 304 | 5E6E52E50B5B9012817E63178BCB63BDE23CF1CC1F9458CED9B93A2BBA7DC4C6 | |
| (4 rows) |
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