踩坑經歷(四)建立索引儲存過程
阿新 • • 發佈:2018-11-16
需求:存在刪除索引並且建立索引
儲存過程
DROP PROCEDURE IF EXISTS add_Index; delimiter // CREATE PROCEDURE add_Index ( IN p_dbname VARCHAR (200), IN p_tablename VARCHAR (200), IN p_idxname VARCHAR (200), IN p_index VARCHAR (200) ) BEGIN DECLARE str VARCHAR (250); SET @str = concat( ' ALTER TABLE ', p_tablename, ' ADD INDEX ', p_index ); SELECT count(*) INTO @cnt FROM information_schema.statistics WHERE TABLE_SCHEMA = p_dbname AND table_name = p_tablename AND index_name = p_idxname; IF @cnt <= 0 THEN PREPARE stmt FROM @str; EXECUTE stmt; END IF; END; // delimiter ;
呼叫儲存過程建立索引
/* 為monitorsys的Bond_Org_Manage_Pro表建立索引idx_mid
*
* */
CALL add_Index (
'monitorsys',
'Bond_Org_Manage_Pro',
'idx_mid',
'idx_mid(manageorgid)'
);