Validating date during insert operation in pl sql with examples dating a high school girl

web2py comes with a Database Abstraction Layer (DAL), an API that maps Python objects into database objects such as queries, tables, and records.The DAL dynamically generates the SQL in real time using the specified dialect for the database back end, so that you do not have to write SQL code or learn different SQL dialects (the term SQL is used generically), and the application will be portable among different types of databases.The Windows binary distribution works out of the box with SQLite, MSSQL, Postgresql and My SQL.The Mac binary distribution works out of the box with SQLite. The IMAP option allows to use DAL to access IMAP.web2py defines the following classes that make up the DAL: The DAL object represents a database connection.catid | catgroup | catname | catdesc ------- ---------- ----------- -------------------------------------------- 1 | Sports | MLB | Major League Baseball 2 | Sports | NHL | National Hockey League 3 | Sports | NFL | National Football League 4 | Sports | NBA | National Basketball Association 5 | Sports | MLS | Major League Soccer 6 | Shows | Musicals | Musical theatre 7 | Shows | Plays | All non-musical theatre 8 | Shows | Opera | All opera and light opera 9 | Concerts | Pop | All rock and pop music concerts 10 | Concerts | Jazz | All jazz singers and bands 11 | Concerts | Classical | All symphony, concerto, and choir concerts (11 rows)select * from category_stage where catid in(12,13) order by 1; catid | catgroup | catname | catdesc ------- ---------- --------- ---------------------------------- 12 | Concerts | Comedy | All stand-up comedy performances 13 | Concerts | Other | General (2 rows)insert into category_stage values (14, default, default, default), (15, default, default, default); select * from category_stage where catid in(14,15) order by 1; catid | catgroup | catname | catdesc ------- ---------- --------- --------- 14 | General | General | General 15 | General | General | General (2 rows)insert into category_stage values (default, default, default, default), (20, default, 'Country', default), (21, 'Concerts', 'Rock', default); select * from category_stage where catid in(0,20,21) order by 1; catid | catgroup | catname | catdesc ------- ---------- --------- --------- 0 | General | General | General 20 | General | Country | General 21 | Concerts | Rock | General (3 rows)The first set of VALUES in this example produce the same results as specifying DEFAULT VALUES for a single-row INSERT statement.The following examples show INSERT behavior when a table has an IDENTITY column.

The last parameter of each method is a callback, unless Promises are being used.

A partial list of supported databases is show in the table below.

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