17 строки
459 B
SQL
17 строки
459 B
SQL
SET @preparedStatement = (SELECT IF(
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(
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SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
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WHERE table_name = 'Emoji'
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AND table_schema = DATABASE()
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AND index_name = 'idx_emoji_name'
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) > 0,
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'SELECT 1',
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'CREATE INDEX idx_emoji_name ON Emoji(Name);'
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));
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PREPARE createIndexIfNotExists FROM @preparedStatement;
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EXECUTE createIndexIfNotExists;
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DEALLOCATE PREPARE createIndexIfNotExists;
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DROP TABLE IF EXISTS Emoji;
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