《Mysql應(yīng)用MySQL導(dǎo)出所有Index和約束的方法》要點：
本文介紹了Mysql應(yīng)用MySQL導(dǎo)出所有Index和約束的方法，希望對您有用。如果有疑問，可以聯(lián)系我們。
MYSQL數(shù)據(jù)庫本文匯總了MySQL導(dǎo)出所有Index 和 約束的方法,提供給大家以方便大家查詢使用.具體如下：
MYSQL數(shù)據(jù)庫1. 導(dǎo)出創(chuàng)建自增字段語句：
MYSQL數(shù)據(jù)庫
SELECT
CONCAT(
'ALTER TABLE `',
TABLE_NAME,
'` ',
'MODIFY COLUMN `',
COLUMN_NAME,
'` ',
IF(UPPER(DATA_TYPE) = 'INT',
REPLACE(
SUBSTRING_INDEX(
UPPER(COLUMN_TYPE),
')',
1
),
'INT',
'INTEGER'
),
UPPER(COLUMN_TYPE)
),
') UNSIGNED NOT NULL AUTO_INCREMENT;'
)
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA = 'source_database_name' AND
EXTRA = UPPER('AUTO_INCREMENT')
ORDER BY TABLE_NAME ASC
MYSQL數(shù)據(jù)庫2. 導(dǎo)出所有索引：
MYSQL數(shù)據(jù)庫
SELECT
CONCAT('ALTER TABLE `',TABLE_NAME,'` ', 'ADD ',
IF(NON_UNIQUE = 1,
CASE UPPER(INDEX_TYPE)
WHEN 'FULLTEXT' THEN 'FULLTEXT INDEX'
WHEN 'SPATIAL' THEN 'SPATIAL INDEX'
ELSE CONCAT('INDEX `',
INDEX_NAME,
'` USING ',
INDEX_TYPE
)
END,
IF(UPPER(INDEX_NAME) = 'PRIMARY',
CONCAT('PRIMARY KEY USING ',
INDEX_TYPE
),
CONCAT('UNIQUE INDEX `',
INDEX_NAME,
'` USING ',
INDEX_TYPE
)
)
),'(', GROUP_CONCAT(DISTINCT CONCAT('`', COLUMN_NAME, '`') ORDER BY SEQ_IN_INDEX ASC SEPARATOR ', '), ');') AS 'Show_Add_Indexes'
FROM information_schema.STATISTICS
WHERE TABLE_SCHEMA = 'pbq'
GROUP BY TABLE_NAME, INDEX_NAME
ORDER BY TABLE_NAME ASC, INDEX_NAME ASC
MYSQL數(shù)據(jù)庫3. 創(chuàng)建刪除所有自增字段：
MYSQL數(shù)據(jù)庫
SELECT
CONCAT(
'ALTER TABLE `',
TABLE_NAME,
'` ',
'MODIFY COLUMN `',
COLUMN_NAME,
'` ',
IF(UPPER(DATA_TYPE) = 'INT',
REPLACE(
SUBSTRING_INDEX(
UPPER(COLUMN_TYPE),
')',
1
),
'INT',
'INTEGER'
),
UPPER(COLUMN_TYPE)
),
') UNSIGNED NOT NULL;'
)
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA = 'destination_database_name' AND
EXTRA = UPPER('AUTO_INCREMENT')
ORDER BY TABLE_NAME ASC
MYSQL數(shù)據(jù)庫4. 刪除庫所有索引：
MYSQL數(shù)據(jù)庫
SELECT
CONCAT(
'ALTER TABLE `',
TABLE_NAME,
'` ',
GROUP_CONCAT(
DISTINCT
CONCAT(
'DROP ',
IF(UPPER(INDEX_NAME) = 'PRIMARY',
'PRIMARY KEY',
CONCAT('INDEX `', INDEX_NAME, '`')
)
)
SEPARATOR ', '
),
';'
)
FROM information_schema.STATISTICS
WHERE TABLE_SCHEMA = 'destination_database_name'
GROUP BY TABLE_NAME
ORDER BY TABLE_NAME ASC
MYSQL數(shù)據(jù)庫希望本文所述示例能夠?qū)Υ蠹矣兴鶐椭?
轉(zhuǎn)載請注明本頁網(wǎng)址：
http://www.snjht.com/jiaocheng/3645.html
