MySQL dynamically creates tables data into stored procedures

  • 2020-05-12 06:18:05
  • OfStack

 
BEGIN 
DECLARE `@i` int(11); 
DECLARE `@siteCount` int(11); 
DECLARE `@sqlstr` VARCHAR(2560); 
DECLARE `@sqlinsert` VARCHAR(2560); // Declare variables above  
SELECT COUNT(0) into `@siteCount` FROM tbl_base_site; // Calculation sheet tbl_base_site Total number of records  
set `@i`=1; 
WHILE (`@i`-1)*300<`@siteCount` DO //while Loop execution  
SET @sqlstr = CONCAT('CREATE TABLE tbl_base_syslog',`@i`,'(syslog_id INT(11) AUTO_INCREMENT PRIMARY KEY, 
create_user VARCHAR(32), 
description text, 
create_time datetime, 
site_id INT(11), 
ip VARCHAR(64), 
version_id SMALLINT(2), 
module_identity VARCHAR(64), 
right_name VARCHAR(64) 
)'); 
prepare stmt from @sqlstr; 
execute stmt; 
// The above implementation creates the table dynamically  
SET @sqlinsert = CONCAT('INSERT INTO tbl_base_syslog',`@i`,'( 
syslog_id, 
create_user, 
description, 
create_time, 
site_id, 
ip, 
version_id, 
module_identity, 
right_name) 
SELECT syslog_id, 
create_user, 
description, 
create_time, 
site_id, 
ip, 
version_id, 
module_identity, 
right_name 
FROM tbl_base_syslog 
WHERE site_id IN (select tbs.site_id from (select site_id from tbl_base_site limit ',`@i`*300,',300) as tbs) 
ORDER BY syslog_id'); 
prepare stmt from @sqlinsert; 
execute stmt; 
// The above implementation starts from 1 A table query record is inserted into a new table that is dynamically created  
SET `@i`= `@i`+1; 

END WHILE; 
END 

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