ClickHouse/docs/en/system_tables/system.tables.md

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# system.tables
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This table contains the String columns 'database', 'name', and 'engine'.
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The table also contains three virtual columns: metadata_modification_time (DateTime type), create_table_query, and engine_full (String type).
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Each table that the server knows about is entered in the 'system.tables' table.
This system table is used for implementing SHOW TABLES queries.
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