Does truncate need commit?

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What is a REF CURSOR? Compare strong and week ref cursor types.

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Which sql most popular?

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what is a database? : Sql dba

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What is sql clause?

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SELECT emp_num, years, SUM(salary) FROM sales UNION ALL SELECT emp_id, SUM(takehomepay) FROM marketing What error is present in the sample code above? 1. Queries being combined with the UNION ALL statement are not allowed to have SELECT lists with a different number of expressions. 2. You are not allowed to use aggregate functions within two queries joined by a UNION ALL statement. 3. The UNION ALL statement incorrectly combines the "years" result from the first query with the "SUM (takehomepay)" result from the second query. 4. Unless the UNION ALL statement is replaced with a UNION statement, the queries will return duplicates. 5. The "emp_id" column from the second query must be renamed (or aliased) as "emp_num" so that it corresponds to the column name from the first query. Otherwise, the queries will not execute.

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in a package one procedure is wrong package shows valid or not

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What is a variable in sql?

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Can a select statement fire a trigger?

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What is the use of prepared statement?

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How many sql databases can you have on one server?

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How many types of keys are there in sql?

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