![]() The 'name' is the constraint name specified in the FOREIGN KEY clause or, if a constraint name was not specified, the first column name specified in the clause. Solution: SELECT TABLENAME, CONSTRAINTTYPE,CONSTRAINTNAME FROM INFORMATIONSCHEMA. The requirement for identical descriptions includes data type, length attribute, and field procedure. Example: We want to display the names of the constraints in the table student. Let’s run a query and loop over its results using a cursor. Problem: You want to find the names of the constraints in a table in SQL Server. INSERT INTO mytab (when, num) VALUES (v_now, RAND(1)) update < sometable > set field case when < condition > then < newvalue > else field end where < condition > Copy.CREATE PROCEDURE loop_demo(IN in_iterations INTEGER)ĭECLARE v_now TIMESTAMP DEFAULT CURRENT TIMESTAMP What can I write code in a stored procedure for this Solution 1: You can use a case to control whether you assign a new value or keep the old value. Let’s write a simple stored procedure that inserts the current timestamp and a random value into a table multiple times, depending on an argument. I've run into this a few times select from table a inner join table b on a.key b.key this will kick out an error that there are duplicate fields. SELECT 'Hello, world!' AS msg FROM sysibm.sysdummy1 If you have access to the script for the sp, you'll need to update it to make sure all columns are defined with unique names. SELECT 'Hello, world!' FROM sysibm.sysdummy1 ĮND% An IF example CREATE PROCEDURE maybe_hello_world(IN in_really BOOLEAN) Hello worldĪ trivial hello_world() procedure: CREATE PROCEDURE hello_world() To generate SQL to re-create a Db2object: On the DB2 Administration Menu (ADB2)panel, specify option 1, and press Enter. CREATE PROCEDURE dbo.Simple examples of SQL stored procedures in Db2. delete from MyTable where rowId not in ( select max or min (rowId) from MyTable group by column1, column2 / these are the unique columns / ) once the data is cleaned, add a unique constraint/index to the unique columns to, as Tom H. Query select routineschema as schemaname, routinename as procedurename, case origin when 'E' then 'User-defined, external' when 'F' then 'Federated procedure' when 'U' then 'User-defined, based on a source' when 'Q' then 'SQL-bodied' end as origin, parmcount as parameters, language, text from syscat.routines. Sorted by: 1 For each unique row, find the smallest id, then delete all remaining rows. 2.2.3. Query below return all stored procedures and information about it in Db2 database. (3) NULL,)' <- problemĪlso it's very helpful to be liberal with carriage returns and indenting, so problems like this aren't hidden 4 screens over and only accessible via horizontal scrollbar. Technically, a primary key constraint is simply a combination of a unique constraint and anot-null constraint. Your logic seems fine, you are getting a syntax error because you aren't delimiting your strings correctly. )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON Note: Constraints are imposed on columns of a table. SELECT = + ' IDENTITY(1,1) NOT NULL, NOT NULL, NULL, NULL, NULL, NOT NULL, NULL, (3) NULL,)'ĬONSTRAINT PRIMARY KEY CLUSTERED( SQL Server supports six types of constraints for maintaining data integrity. Also, if two SPs have the same name, it might be because they have overloaded parameters. You'll need to have read rights to the SYSIBM tables. SET = "if exists (select * from dbo.sysobjects where id = and OBJECTPROPERTY(id, N'IsUserTable') = 1) On zOS DB2 the following will show the alter timestamp: SELECT name, alteredts FROM SYSIBM.SYSROUTINES WHERE NAME 'myproc' AND SCHEMA 'myschema'. literally just started learning today!! So please explain in dummy terms.Ĭode so far below: CREATE PROCEDURE as varchar (50)) I am getting syntax errors in these areas. The problem: the constraint must be a variable as when it makes a copy of a table it cannot name the PK that I have with the same as one used before. But I am struggling to understand how to incorporate a constraint into the stored procedure. Using the GROUP BY and HAVING clauses can neatly show the duplicates in your data. ![]() ![]() I have managed use a stored procedure to create a copy of a table with a variable name.
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