What are sql constraints?

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What is nosql vs sql?

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What is procedure explain with example?

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What makes a good primary key?

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How can we debug in PL/SQL?

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what does the t-sql command ident_incr does? : Transact sql

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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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What is the difference between local and global temporary table?

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What is sap sql anywhere?

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how can we know the count/number of elements of an array? : Sql dba

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What is the use of count (*) in sql?

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What is auto increment in sql?

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