SELECT can be used not only as an independent statement, but also as a clause in other statements, for exampleINSERTINTO...SELECT...;. SELECT can also be used in asubquerywithin a statement. In many cases, when
A CTE (common table expression) is a named subquery defined in a WITH clause, the result of which is effectively a table. Learn how to write and work with CTE expressions. Querying Semi-structured Data Semi-structured data represents arbitrary hierarchical data structures, which can be used to...
Snowflake支持使用标准SELECT语句和以下基本语法进行查询: [ WITH ... ] SELECT [ TOP <n> ] ... [ INTO ... ] [ FROM ... [ AT | BEFORE ... ] [ CHANGES ... ] [ CONNECT BY ... ] [ JOIN ... ] [ LATERAL ... ] [ MATCH_RECOGNIZE ... ] [ PIVOT | UNPIVOT ... ] [ VAL...
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SELECT Specific Columns in a Table Commas in the Front or Back? Place your Commas in front for better Debugging Capabilities Sort the Data with the ORDER BY Keyword Use a Column Name or Number in an ORDER BY Statement Two Examples of ORDER BY using Different Techniques ...
INTO object_name column_list_in_parentheses? ( values_builder | query_statement ) ; insert_multi_table_statement : INSERT OVERWRITE? ALL into_clause2 | INSERT OVERWRITE? (FIRST | ALL) (WHEN predicate THEN into_clause2+)+ (ELSE into_clause2)? subquery ; into_clause2 : INTO...
Expressions in WHEN clauses (for conditional multi-table inserts) and VALUES clauses can only reference the subquery via an alias. The alias must be one of the following: Explicit alias specified for a SELECT expression. Default alias for an expression. Positional alias ($1, $2, etc.). I...
ScalarSubquery ShiftLeft ShiftRight SortOrder UnscaledValue Relational Operators Aggregate functions and group-by clauses Distinct Filters In InSet Joins Limits Projections Sorts (ORDER BY) Union and Union All Window functions and windowing-clauses String Functions Ascii Concat(children) Length Like Lower ...
For CTAS, specifies the SELECT statement that populates the table. This query must be specified last in the CTAS statement, regardless of the other parameters that you include. For CREATE TABLE … USING TEMPLATE, specifies the subquery that calls the INFER_SCHEMA function and formats the output...
In an INTO clause, the VALUES clause is optional. If it is omitted, the values from the SELECT list are inserted into the target table in their natural order. Expressions in WHEN clauses (for conditional multi-table inserts) and VALUES clauses can only reference the subquery via an alias....