#MYSQL CREATE VIEW WITH UNION CODE#

The insert statement fails even though the row seems to conform with the definition of the v3 view.īecause the view v3 is dependent on the v2 view, and the v2 view has the option WITH CASCADED CHECK OPTION.

#MYSQL CREATE VIEW WITH UNION CODE#

CHECK OPTION failed 'classicmodels.v3' Code language: SQL (Structured Query Language) ( sql ) MySQL issued the following error message: Error Code: 1369. VALUES ( 8) Code language: SQL (Structured Query Language) ( sql ) Insert a new row into the t1 table through the v3 view with value 8. WHERE c < 20 Code language: SQL (Structured Query Language) ( sql ) It fails the new row that does not conform with the definition of v2 view.Īfter that, create a new view named v3 based on v2. CHECK OPTION failed 'classicmodels.v2' Code language: SQL (Structured Query Language) ( sql ) Now, insert a row with value 5 into the t1 table through the v2 view. WITH CASCADED CHECK OPTION Code language: SQL (Structured Query Language) ( sql ) Then, create a view v2 based on the v1 view with WITH CASCADED CHECK OPTION clause. VALUES ( 5) Code language: SQL (Structured Query Language) ( sql ) CREATE OR REPLACE VIEW v1Ĭ > 10 Code language: SQL (Structured Query Language) ( sql )īecause we did not specify the WITH CHECK OPTION, the following statement works even though it does not conform with the definition of the v1 view. Next, create a view v1 based on the t1 table with the data in the c column greater than 10. ) Code language: SQL (Structured Query Language) ( sql ) MySQL WITH CASCADED CHECK OPTIONĬonsider the following example to understand the effect of the WITH CASCADED CHECK OPTION:įirst, create a table named t1 with one column c whose data type is an integer. To determine the scope of the check, MySQL provides two options: LOCAL and CASCADED. If you don’t specify the keyword explicitly in the WITH CHECK OPTION clause, MySQL uses CASCADED by default. When you create a view with the WITH CHECK OPTION clause and issue a DML statement against the view such as INSERT, UPDATE, and DELETE, MySQL checks to ensure that the rows that are being changed are conformable to the definition of the view.īecause a view can be created based on other views, MySQL also checks the rules in the dependent views for data consistency. Introduction to scope of check LOCAL & CASCADED If this is not the case, you can follow the WITH CHECK OPTION tutorial.

Note that you should be familiar with the WITH CHECK OPTION clause before going forward with this tutorial. LABOR.LT_SHIFT_UNPR_NOT_CHRG.Summary: in this tutorial, you will learn the differences between LOCAL and CASCADED in WITH CHECK OPTION clause. If I assume your Table is called LABOUR then it should look something like :

Please note my description above is quite sloppy but you can get exact specification of requirements out of the Online Oracle Documentation. Please do not take this as an offense of any sort - we all had to start somewhere. I would suggest you get some king of reference on basic SQL. FROM TABLENAME WHERE FIELD3 = SOMETHING - NEITHER of the SELECT statements you have posted have a 'FROM TABLENAME'ĪLSO there must be the same number of Fields in each query that is being UNION'd and they should be of a compatible datatype. The syntax of a SELECT statement is roughly SELECT Field1, Field2. LABOR.LT_SHIFT_UNPR_NOT_CHRG.LT_SH_NCHG_UNPROD_CD = '14' LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_SHIFT_DT as 'SHIFT_DATE' > '3' and LABOR.LT_SHIFT_UNPR_NOT_CHRG.LT_SH_NCHG_UP as 'UP' LABOR.LT_SHIFT_UNPR_NOT_CHRG.LT_SH_NCHG_UNPROD_CD as 'UNPROD_HRS_CODE', LABOR.LT_SHIFT_UNPR_NOT_CHRG.LT_SH_NCHG_SHIFT_ID as 'SHIFT_ID', LABOR.LT_SHIFT_UNPR_NOT_CHRG.LT_SH_NCHG_HRS as 'UNPROD_HRS', LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_UP as 'UP' LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_SHIFT_ID as 'SHIFT_ID', LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_SHIFT_DT as 'SHIFT_DATE', LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_SHIFT as 'SHIFT', LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_OP_PAY_HRS as'OPER_HRS', LABOR.LT_SHIFT_CONFIG.LT_SH_CFG_MECH_PAY_HRS as'MECH_HRS', We have Oracle 9i.ĬREATE VIEW 'LABOR'.'LT_VIEW_RPT_VENDOR_CHRGBK' AS Any help is appreciated as I am completely new to Oracle. I am not sure if the rest of my code is correct. Here is what I have so far but I get an error saying missing select statement.

I am trying to use a union to join the two tables so I can retrieve the information I need. I am trying to extract data from two tables.

Mysql create view with union