What is sqlca in powerbuilder?

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What is raw datatype in sql?

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What is difference between my sql and sql?

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when MSQL8.0 is in market

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how to get a list of indexes of an existing table? : Sql dba

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Is mariadb a nosql database?

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Can you skip header records while loading? : aql loader

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7. Where would you look for errors from the database design?

1 Answers   Fintellix,

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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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Can we call a function containing dml statements in a select query?

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Which is faster joins or subqueries?

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Can we insert delete data in view?

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