追踪三千里!“治水红线”前景宁公安跨省办“小案”
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August 5, 2025 14:25
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Cast UUID into BYTEA (and vice versa) in PostgreSQL
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| -- UUID to BYTEA: | |
| SELECT DECODE(REPLACE(CAST(uuid_field AS TEXT),'-',''), 'hex') FROM table; | |
| -- BYTEA to UUID: | |
| SELECT CAST(ENCODE(bytea_field, 'hex') AS UUID) FROM table; | |
| -- BONUS -- | |
| -- UUID to base64 string (for nicer urls): | |
| SELECT ENCODE(DECODE(REPLACE(CAST(uuid_field AS TEXT),'-',''), 'hex'), 'base64') FROM table; | |
| -- base64 to UUID: | |
| SELECT CAST(ENCODE(DECODE(base64_field, 'base64'), 'hex') AS UUID) FROM table; |
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