CREATE TRIGGER pid_insert_check BEFORE INSERT ON department FOR EACH ROW BEGIN IF (NEW.pid <> 0 AND NEW.pid NOT IN (select id from department)) THEN signal sqlstate '45000' set message_text = 'department parent id has to be chosen from id'; END IF; END CREATE TRIGGER pid_delete_ch...
mysql> DELIMITER//mysql>CREATE TRIGGER t_insert2 after INSERT ON sc FOR EACH ROW->BEGIN-> DECLARE msg VARCHAR(200);-> IF (new.grade <0ornew.grade>100) THEN-> SET msg ="成绩不符合要求";-> signal sqlstate'HY000'SET message_text =msg;->END IF;-> END//Query OK,0rows affected (...
Before Delete Trigger begin tran does the row level lock or table level lock Begin Transaction with If Condition BEGIN TRANSACTION within TRY - CATCH or vice versa Best practice to handle the paging and performance in SQL Stored procedure Best Practice: Use of semi-colon to terminate statements;...
I have to check if this exists in table, if it does not exist only then insert. I cannot use MERGE as it is giving me trigger issues and I tried using if exists(below is my code) If exists(select 1 from stg_table s join table t on s.id=t.id and t.seq=s.seq ) begin updat...
excuse me if any errors. i'm new to mysql and i assigned for the database role in the project. how to see the list of triggers, procedure and functions in the database. whats the syntax to check weather a trigger is existing or not. waiting for your replies. (pavanpinnu@gmail....
Since you are using SQL Server 2008, why aren't you using MERGE command? Ummm... Not quite true. It will always give you the latest identity from a table that your connection inserted to... it just may not be the table you expected especially if triggers that write to other tables ...
Check if event log source exists for non admins Check if file created today and not 0 KB Check if HyperThreading is enabled Check if IIS running on a remote server check if object is $null Check if OS is 32bit or 64bit check If Process Is Running in another computer Check if SMB1 ...
mysql> DELIMITER//mysql>CREATE TRIGGER t_insert2 after INSERT ON sc FOR EACH ROW->BEGIN-> DECLARE msg VARCHAR(200);-> IF (new.grade <0ornew.grade>100) THEN-> SET msg ="成绩不符合要求";-> signal sqlstate'HY000'SET message_text =msg;->END IF;-> END//Query OK,0rows affected (...
ExecuteAsTriggerOption ExecuteContext ExecuteInsertSource ExecuteOption ExecuteOptionKind ExecuteParameter ExecuteSpecification ExecuteStatement ExistsPredicate ExpressionCallTarget ExpressionGroupingSpecification ExpressionWithSortOrder ExternalCreateLoginSource ExternalDataSourceLiteral...
MDL_SHARED)); in check_if_table_exists() is triggered. With embedded server, check_if_table_exists() is called from plugin_load() without a metadata lock on the table. This triggers the assert. Only happens in the mysql-5.5-runtime tree.How to repeat:./mtr 1st --embbeded-server ...