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August 31, 2012 14:00
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Analyzing SQL with awk
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Use awk's multiline pattern matching to select, for example, create-table statements in a database schema: | |
$ mysqldump --no-data -u theuser -p mysql | awk '/CREATE TABLE/,/;/' | |
CREATE TABLE `columns_priv` ( | |
`Host` char(60) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Db` char(64) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`User` char(16) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Table_name` char(64) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Column_name` char(64) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, | |
`Column_priv` set('Select','Insert','Update','References') CHARACTER SET utf8 NOT NULL DEFAULT '', | |
PRIMARY KEY (`Host`,`Db`,`User`,`Table_name`,`Column_name`) | |
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Column privileges'; | |
CREATE TABLE `db` ( | |
`Host` char(60) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Db` char(64) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`User` char(16) COLLATE utf8_bin NOT NULL DEFAULT '', | |
`Select_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Insert_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Update_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Delete_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Create_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Drop_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Grant_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`References_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Index_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Alter_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Create_tmp_table_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Lock_tables_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Create_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Show_view_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Create_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Alter_routine_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Execute_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Event_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
`Trigger_priv` enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N', | |
PRIMARY KEY (`Host`,`Db`,`User`), | |
KEY `User` (`User`) | |
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='Database privileges'; | |
... |
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