We implement automatic instructions to upgrade a database schema. These include modifying field values and adding/dropping fields, tables, indexes etc.
I see from the syntax of DROP INDEX that a table name is not specified. Are there any plans for adding a way of specifying the table? There are various syntaxes at http://www.w3schools.com/SQL/sql_drop.asp - DROP INDEX index_name ON table_name DROP INDEX table_name.index_name ALTER TABLE table_name DROP INDEX index_name Given the existing syntax of "DROP INDEX index_name" the first format would seem to be most useful. I note that SQLite prevents creation of indexes with the same name, regardless of table. Also, is there any good reason for creating a primary key versus creating a separate index afterwards? Primary keys can't be deleted so if I have to modify one, the complete table has to be dropped and re-created, including copying all the data. If, for example, I had a compound index on multiple fields and made it the primary key, or had a text field as the primary key, http://www.sqlite.org/lang_createtable.html says that an automatically generated integer will be used as the B-tree key. So in this case it would appear that the primary key has no special function. Am I missing something here? Why can't they be dropped? (To test this I used SqliteExplorer and accessed the default name of the primary key index, and tried to drop that.) Hugh _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
