Qry not updating from form
Attempt to insert a new stock item along with the quantity of stock.
If the item already exists, instead update the stock count of the existing item.
The idea behind Query Change is running a LIST query using Aeries query tool, and by a click of a button, turning the resulting records into a fully editable grid that can bypass all business rules, except security settings.
Considering the power of this tool, it should be used carefully.
Click the lock icon in the field headings to lock a field.
The field will be greyed out, and the Tab key will not stop in that field.
If it does, then only one of the join rows will be used to update the target row, but which one will be used is not readily predictable.
Because of this indeterminacy, referencing other tables only within sub-selects is safer, though often harder to read and slower than using a join.
clause; columns not explicitly modified retain their previous values.
According to the standard, the source value for a parenthesized sub-list of column names can be any row-valued expression yielding the correct number of columns.
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There are two ways to modify a table using information contained in other tables in the database: using sub-selects, or specifying additional tables in the sub-query that produces as many output columns as are listed in the parenthesized column list preceding it.
The sub-query must yield no more than one row when executed.
With the ability to easily navigate each cell using the keyboard and quickly typing values, dates, or codes, you can easily change many records with many fields from many tables in no time.