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Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...
Some database vendors also have specific queries; for example, in MySQL, you can use SHOW TABLE STATUS to get stats about all tables, including row counts. With Microsoft T-SQL, there’s the ...
If your business uses relational databases to store data, you may have used a SQL SELECT clause to create new tables from query results. This method won't work in SQL Server, but Microsoft's Trans ...
Figure 2.9: SQL QUERY TABLES Window Click OK to display the SQL QUERY COLUMNS window. Select the columns that you want to include in the query and click on the right arrow. Figure 2.10: SQL QUERY ...