40 lines
1.6 KiB
MySQL
40 lines
1.6 KiB
MySQL
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-- Step 1: Create a temporary table with the IDs to delete
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CREATE TEMPORARY TABLE temp_users_to_delete AS
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SELECT id
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FROM users
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WHERE (
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LENGTH(name) - LENGTH(REPLACE(name, 'A', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'B', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'C', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'D', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'E', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'F', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'G', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'H', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'I', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'J', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'K', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'L', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'M', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'N', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'O', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'P', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'Q', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'R', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'S', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'T', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'U', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'V', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'W', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'X', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'Y', '')) +
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LENGTH(name) - LENGTH(REPLACE(name, 'Z', ''))
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) > 4
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AND name <> 'TONI Düsseldorf';
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-- Step 2: Delete using the temporary table
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DELETE FROM users
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WHERE id IN (SELECT id FROM temp_users_to_delete);
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-- Optional: Drop the temporary table
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DROP TEMPORARY TABLE temp_users_to_delete;
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