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SQL 2022-03-16 14:50:11
sql query use select name inside where clause
You can not use aliased columns in a WHERE clause. You can try using a derived table. Perhaps something like this (sorry, not tested): select tblProgram.POIname from tblProgram where -- Use this if you only want to filter by the value. (select count... Add solution -
Other 2022-02-27 23:55:01
group by mongo
#It's the equivalent of the following SQL instruction: # SELECT COUNT(*) FROM Table # GROUP BY your_field # HAVING COUNT(*) > N query = db.collection.aggregate([ { "$group": { "_id": "$your_field", #GROUP BY yo... Add solution -
SQL 2022-02-14 03:45:04
oracle drop table if exists
DECLARE l_cnt NUMBER; BEGIN SELECT COUNT(*) INTO l_cnt FROM dba_tab_columns WHERE owner = 'my_owner' AND table_name = 'my_table' AND column_name = 'my_column'; IF( l_cnt = 1 ) THEN EXECUTE IMMEDIATE 'ALTER TABLE my_table DROP COLUMN... Add solution -
Other 2022-02-08 01:15:14
import 'package:sqfLite/sqfLite.dart';
// Get a location using getDatabasesPath var databasesPath = await getDatabasesPath(); String path = join(databasesPath, 'demo.db'); // Delete the database await deleteDatabase(path); // open the database Database database = await openDatabase(path, ver... Add solution
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