38 lines
1.0 KiB
Plaintext
38 lines
1.0 KiB
Plaintext
DELIMITER //
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CREATE OR REPLACE PROCEDURE zen_read_schema (
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IN p_tablename VARCHAR(100)
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)
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/*
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功能：讀取資料表結構資訊
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範例：CALL zen_read_schema('pmsproject_class');
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*/
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BEGIN
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SELECT
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t.TABLE_NAME AS '表格名稱',
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c.COLUMN_NAME AS '欄位名稱',
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c.ORDINAL_POSITION AS '序號',
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c.DATA_TYPE AS '資料型別',
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IFNULL(c.CHARACTER_MAXIMUM_LENGTH, '') AS '長度',
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'' AS '預設值',
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CASE WHEN c.IS_NULLABLE = 'YES' THEN 'N' ELSE 'Y' END AS '是否允許空值',
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IFNULL(
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(SELECT COLUMN_COMMENT
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_SCHEMA = t.TABLE_SCHEMA
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AND TABLE_NAME = t.TABLE_NAME
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AND COLUMN_NAME = c.COLUMN_NAME),
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''
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) AS '欄位描述'
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FROM
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INFORMATION_SCHEMA.TABLES t
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LEFT JOIN INFORMATION_SCHEMA.COLUMNS c ON t.TABLE_NAME = c.TABLE_NAME AND t.TABLE_SCHEMA = c.TABLE_SCHEMA
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WHERE
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t.TABLE_TYPE = 'BASE TABLE'
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AND t.TABLE_NAME = p_tablename
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ORDER BY
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t.TABLE_NAME,
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c.ORDINAL_POSITION;
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END//
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DELIMITER ; |