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Fix #215 by adding select alias example

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Sean Corfield 2018-06-25 13:00:42 -07:00
parent cc9b786602
commit 0c44eaa6e7
1 changed files with 14 additions and 0 deletions
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README.md
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@ -114,6 +114,20 @@ To add to clauses instead of replacing them, use `merge-select`, `merge-where`,
=> ["SELECT * FROM foo WHERE (a = ? AND b < ?)" 1 100] => ["SELECT * FROM foo WHERE (a = ? AND b < ?)" 1 100]
``` ```
Column and table names may be aliased by using a vector pair of the original
name and the desired alias:
```clojure
(-> (select :a [:b :bar] :c [:d :x])
(from [:foo :quux])
(where [:= :quux.a 1] [:< :bar 100])
sql/format)
=> ["SELECT a, b AS bar, c, d AS x FROM foo quux WHERE (quux.a = ? AND bar < ?)" 1 100]
```
In particular, note that `(select [:a :b])` means `SELECT a AS b` rather than
`SELECT a, b` -- `select` is variadic and does not take a collection of column names.
Inserts are supported in two patterns. Inserts are supported in two patterns.
In the first pattern, you must explicitly specify the columns to insert, In the first pattern, you must explicitly specify the columns to insert,
then provide a collection of rows, each a collection of column values: then provide a collection of rows, each a collection of column values: