技術標籤：技術分享資料庫操作sqlmysql資料庫

Mysql查詢表字段的內容

SELECT table_name          '表名',
       COLUMN_COMMENT   AS '列名中文',
       Column_Name      AS 列名英文,
       data_type        AS 資料型別,
       (
           CASE
               WHEN data_type = 'float'
                   OR data_type = 'double'
                   OR data_type = 'TINYINT'
                   OR data_type = 'SMALLINT'
                   OR data_type = 'MEDIUMINT'
                   OR data_type = 'INT'
                   OR data_type = 'INTEGER'
                   OR data_type = 'decimal'
                   OR data_type = 'bigint'
                   THEN
                   NUMERIC_PRECISION
               ELSE
                   CHARACTER_MAXIMUM_LENGTH
               END
           )            AS '長度(整數)',
       NUMERIC_SCALE    AS '長度(小數)',
       (
           CASE
               WHEN EXTRA = 'auto_increment' THEN
                   1
               ELSE
                   0
               END
           )            AS '是否自增',
              (
           CASE
               WHEN IS_NULLABLE = 'NO' THEN
                   0
               ELSE
                   1
               END
           )            AS '能否為空',
       (
           CASE
               WHEN COLUMN_KEY = 'PRI' THEN
                   1
               ELSE
                   0
               END
           )            AS '是否是主鍵',

#        extra,
       COLUMN_DEFAULT   AS '預設值'
FROM information_schema.COLUMNS

where table_schema = '表名' #表所在資料庫

 

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