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How to write the command phrases that need to be grouped in database queries

2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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This article is about how to write command phrases that need to be grouped in database queries. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

What is the command phrase that needs to be grouped in a database query?

The phrase that SQL implements a grouped query is "GROUP BY".

HAVING cannot exist independently from the GROUP BY phrase; ASC cannot exist independently from the ORDERBY phrase.

The phrase that implements the grouping query is the GROUPBY,GROUP BY phrase used to group the query results, which can be used for grouping and summarization.

The ORDERBY phrase is to sort the final query results.

The HAVING phrase is the condition used to qualify the grouping

ASC is limited to sort by the ascending order of the specified property value. If you need a HAVING, a phrase, the HAVING phrase must appear after the GROUPBY phrase, and if you need an ASC (DESC descending) phrase, it must appear after the ORDERBY phrase, and usually the GROUPBY phrase appears before the ORDERBY phrase.

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