Examples of using Subqueries in English and their translations into German
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Colloquial
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Official
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Ecclesiastic
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Medicine
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Financial
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Ecclesiastic
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Political
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Computer
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Programming
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Official/political
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Political
Contain aggregate functions, subqueries and joins.
Unions are allowed in subqueries of any kind and can themselves contain subqueries.
Creation of queries with unions and subqueries.
Merge, complex data manipulation with subqueries, data manipulation and integrity constraints.
You can use WITH to flatten nested queries, or to simplify subqueries.
Subqueries are written in the same way as regular SELECT queries, but they must be enclosed in parentheses.
Be used in aggregate functions, subqueries and joins.
Subqueries(queries nested inside another query) is only supported in SELECT statements with natively compiled modules.
An error occurs when you use FIRST in subqueries. This query.
Scalar Results Subqueries used in search predicates, other than existential and quantified predicates, must return a scalar result;
Sets the FROM-list size beyond which subqueries are not collapsed.
When subqueries are used to get the values of the output column in the SELECT list, a subquery must return a scalar result.
The SELECT statement contains no fields derived from subqueries or other expressions.
An alias may be useful or even necessary if there are subqueries that refer to the main select statement as they often do-subqueries like this are called correlated subqueries.
Amazon S3 Select andAmazon Glacier Select queries currently do not support subqueries or joins.
This group of predicates includes those that use subqueries to submit values for all kinds of assertions in search conditions.
In subquery expressions, quantified predicates make it possible to compare separate values with the results of subqueries; they have the following common form.
When enclosed in parentheses, CTE constructs can be used as subqueries in SELECT statements, but also in UPDATE s, MERGE s etc.
Important, newly supported T-SQL functionalities within Natively compiled Stored Procedures and, brand new, Functions, are: the OUTPUT clause, UNION and UNION ALL, DISTINCT,OUTER JOINs, subqueries.
The WITH clause precedes the SELECT list in a query anddefines one or more subqueries for use within the SELECT query.
The engine guarantees that all records returned by an explicit lock statement are actually locked and do meet the search conditions specified in WHERE clause, as long as the search conditions do not depend on any other tables,via joins, subqueries, etc.
Advanced Query Builder enables users to make up large andcomplicated SQL queries with unions and subqueries for different servers without any knowledge of the SQL syntax.
Using this query utility you can work with several DB2 queries at once, edit query text in the powerful SQL editor, view the execution results in different modes,create DB2 queries with unions and subqueries visually, build diagrams based on queries, view DB2 query execution plans and perform any other operations you may need in your work with DB2 database queries.
Subquery and apparently is unfamiliar territory and left join or simply have not been abstracted things well.
Instead of one subquery we now have 9(!) and the execution time is(even that this is in milliseconds) remarkable.
Looking into the trace we see that the first statement is verysimple while the second statement is executing a subquery because it needs to find the corresponding SCN for the timestamp we were using.
Single-value-subselect A subquery returning one scalar value singleton.
This is not permitted when the subquery follows=,!
If the subquery returns an empty set, the predicate is TRUE for every left-side value, regardless of the operator.