28 lines
1.4 KiB
MySQL
28 lines
1.4 KiB
MySQL
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ALTER TABLE max_seq_id ADD COLUMN int_seq_id INTEGER;
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-- Convert 8 byte wide big-endian integer as blob to native 64 bit integer.
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-- Adapted from https://stackoverflow.com/a/70296198.
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UPDATE max_seq_id SET int_seq_id = (
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SELECT (
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(instr('123456789ABCDEF', substr(hex(seq_id), -1 , 1)) << 0)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -2 , 1)) << 4)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -3 , 1)) << 8)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -4 , 1)) << 12)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -5 , 1)) << 16)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -6 , 1)) << 20)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -7 , 1)) << 24)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -8 , 1)) << 28)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -9 , 1)) << 32)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -10, 1)) << 36)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -11, 1)) << 40)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -12, 1)) << 44)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -13, 1)) << 48)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -14, 1)) << 52)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -15, 1)) << 56)
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| (instr('123456789ABCDEF', substr(hex(seq_id), -16, 1)) << 60)
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)
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);
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ALTER TABLE max_seq_id DROP COLUMN seq_id;
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ALTER TABLE max_seq_id RENAME COLUMN int_seq_id TO seq_id;
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