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set NOEXEC ON;
Select * from emp;
Set NOEXEC OFF;
This validation is working in SQL Server. But It's not working in oracle.
Is there any syntax to check the query is valid or not in Oracle.
357
To validate the syntax of the statements, right-click in the editor, and then select a validation option. To validate the syntax of the statements for the connection that is selected in the Configuration tab, select the Validate statement syntax for current configuration option.
When a user executes any query, for generating the internal form of the query, the parser in the system checks the syntax of the query, verifies the name of the relation in the database, the tuple, and finally the required attribute value. The parser creates a tree of the query, known as 'parse-tree.
A solution for this is the noexec parameter. By default it is set to off but it can be enabled, if you want to test a script without executing it. The parameter tells SQL Server to parse the script and that is it, no execution.
Using EXPLAIN PLAN
EXPLAIN PLAN FOR SELECT FROM emp;
ERROR at line 1: ORA-00936: missing expression
EXPLAIN PLAN FOR SELECT * FROM emp;
Explained
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