The following table defines terms used in syntax diagrams shown in Chapter 9, Query Language Reference, and that don’t fall into categories documented in other tables, such as operators,
Each alias must be globally unique in the whole query (this includes aliases defined in the projection—that is, aliases used in the select clause and in the from clause. The syntax diagrams in this section show the structure of a query and of each clause in a query. Read them from left to right. Items above or below the main line are optional. Items that can repeat are shown by lines that loop back from the end to the beginning of the repeating section, along with the separator character.
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