Sqlite order by union2/11/2024 The default sort order can be changed with the following configuration options. This is identical to the default sort order of PostgreSQL. Note that ALL may not be used in combination with other expressions in the ORDER BY clause - it must be by itself.īy default if no modifiers are provided, DuckDB sorts ASC NULLS LAST, i.e., the values are sorted in ascending order and null values are placed last. The direction of this sort may be modified using either ORDER BY ALL ASC or ORDER BY ALL DESC and/or NULLS FIRST or NULLS LAST. The ALL keyword indicates that the output should be sorted by every column in order from left to right. Note that it is 1-indexed), or the keyword ALL.Įach expression can optionally be followed by an order modifier ( ASC or DESC, default is ASC), and/or a NULL order modifier ( NULLS FIRST or NULLS LAST, default is NULLS LAST). The expressions may begin with either an arbitrary scalar expression (which could be a column name), a column position number (Ex: 1. The ORDER BY clause may contain one or more expressions, separated by commas.Īn error will be thrown if no expressions are included, since the ORDER BY clause should be removed in that situation. In addition, every order clause can specify whether NULL values should be moved to the beginning or to the end. The ORDER BY clause sorts the rows on the sorting criteria in either ascending or descending order. Logically it is applied near the very end of the query (just prior to LIMIT or OFFSET, if present).
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