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mysql表類型查詢示例詳解

更新時間：2025年04月17日 11:06:47 作者：韶博雅

這篇文章主要介紹了mysql表類型查詢示例詳解,本文通過實例代碼給大家介紹的非常詳細(xì),感興趣的朋友一起看看吧

普通表

SELECT 
    table_schema AS database_name,
    table_name
FROM 
    information_schema.tables
WHERE 
    table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND table_type = 'BASE TABLE'
    AND table_name NOT IN (
        SELECT DISTINCT table_name 
        FROM information_schema.partitions 
        WHERE partition_name IS NOT NULL
    )
ORDER BY 
    table_schema, table_name;

分區(qū)表

SELECT 
    p.table_schema AS database_name,
    p.table_name,
    GROUP_CONCAT(p.partition_name ORDER BY p.partition_ordinal_position) AS partitions,
    p.partition_method,
    p.partition_expression
FROM 
    information_schema.partitions p
WHERE 
    p.table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND p.partition_name IS NOT NULL
GROUP BY 
    p.table_schema, p.table_name, p.partition_method, p.partition_expression
ORDER BY 
    p.table_schema, p.table_name;

區(qū)分表

SELECT 
    t.table_schema AS database_name,
    t.table_name,
    CASE 
        WHEN p.table_name IS NULL THEN '普通表'
        ELSE '分區(qū)表'
    END AS table_type,
    p.partition_method,
    p.partition_expression
FROM 
    information_schema.tables t
LEFT JOIN (
    SELECT DISTINCT 
        table_schema, 
        table_name,
        partition_method,
        partition_expression
    FROM 
        information_schema.partitions 
    WHERE 
        partition_name IS NOT NULL
) p ON t.table_schema = p.table_schema AND t.table_name = p.table_name
WHERE 
    t.table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND t.table_type = 'BASE TABLE'
ORDER BY 
    t.table_schema, t.table_name;

查出數(shù)據(jù)量

SELECT 
    t.table_schema AS '數(shù)據(jù)庫名',
    t.table_name AS '表名',
    CASE 
        WHEN p.table_name IS NULL THEN '普通表'
        ELSE CONCAT('分區(qū)表(', p.partition_method, ')')
    END AS '表類型',
    t.table_rows AS '數(shù)據(jù)行數(shù)(估算)',
    CONCAT(ROUND(t.data_length / (1024 * 1024), 2), ' MB') AS '數(shù)據(jù)大小',
    CONCAT(ROUND(t.index_length / (1024 * 1024), 2), ' MB') AS '索引大小',
    CONCAT(ROUND((t.data_length + t.index_length) / (1024 * 1024), 2), ' MB') AS '總大小',
    p.partition_expression AS '分區(qū)鍵'
FROM 
    information_schema.tables t
LEFT JOIN (
    SELECT DISTINCT 
        table_schema, 
        table_name,
        partition_method,
        partition_expression
    FROM 
        information_schema.partitions 
    WHERE 
        partition_name IS NOT NULL
) p ON t.table_schema = p.table_schema AND t.table_name = p.table_name
WHERE 
    t.table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND t.table_type = 'BASE TABLE'
ORDER BY 
    t.table_schema, 
    CASE WHEN p.table_name IS NULL THEN 0 ELSE 1 END,  -- 普通表在前
    t.table_name;
SELECT 
    t.table_schema AS '數(shù)據(jù)庫',
    t.table_name AS '表名',
    CASE 
        WHEN p.partition_method IS NULL THEN '普通表'
        ELSE CONCAT('分區(qū)表(', p.partition_method, ')')
    END AS '表類型',
    t.table_rows AS '估算行數(shù)',
    CONCAT(ROUND(t.data_length/1024/1024, 2), ' MB') AS '數(shù)據(jù)大小',
    p.partition_expression AS '分區(qū)鍵'
FROM 
    information_schema.tables t
LEFT JOIN (
    SELECT 
        table_schema, 
        table_name,
        partition_method,
        partition_expression
    FROM 
        information_schema.partitions
    WHERE 
        partition_name IS NOT NULL
    GROUP BY 
        table_schema, table_name, partition_method, partition_expression
) p ON t.table_schema = p.table_schema AND t.table_name = p.table_name
WHERE 
    t.table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND t.table_type = 'BASE TABLE'
ORDER BY 
    t.table_schema, t.table_name;

查出表行數(shù)

SELECT 
    t.table_schema AS '數(shù)據(jù)庫',
    t.table_name AS '表名',
    CASE 
        WHEN p.partition_method IS NULL THEN '普通表'
        ELSE CONCAT('分區(qū)表(', p.partition_method, ')')
    END AS '表類型',
    t.table_rows AS '估算行數(shù)',
    p.partition_expression AS '分區(qū)鍵'
FROM 
    information_schema.tables t
LEFT JOIN (
    SELECT DISTINCT 
        table_schema, 
        table_name,
        partition_method,
        partition_expression
    FROM 
        information_schema.partitions
    WHERE 
        partition_name IS NOT NULL
) p ON t.table_schema = p.table_schema AND t.table_name = p.table_name
WHERE 
    t.table_schema NOT IN ('information_schema', 'mysql', 'performance_schema', 'sys')
    AND t.table_type = 'BASE TABLE'
ORDER BY 
    t.table_schema, t.table_name;

到此這篇關(guān)于mysql表類型查詢的文章就介紹到這了,更多相關(guān)mysql表類型查詢內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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