What does SELECT * do in SQL?
An asterisk (" * ") can be used to specify that the query should return all columns of all the queried tables. SELECT is the most complex statement in SQL, with optional keywords and clauses that include: The FROM clause, which indicates the tables to retrieve data from. Lees verder »
What does SELECT a * mean in SQL?
"select a. * from table1 a" locks the data for update (like if we use the statement from PLSQL developer, commit, rollback button will be active), where as if I use "select * from table1" those buttons are not getting activated. Lees verder »
What does SELECT * into do?
SQL SELECT INTO is a statement that allows you to create a new table by selecting data from an existing table. It copies the data and structure of a source table into a new table, typically for backup, archiving, or data manipulation purposes. Lees verder »
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