chore: Move db. to a new branch (#4349)

Co-authored-by: Aljaž Mur Eržen <[email protected]>

Author: max-sixty

CHANGELOG.md

@@ -10,13 +10,6 @@
   generates Markdown documentation from `.prql` files. (@vanillajonathan,
   #4152).
 
-- _Breaking_: References to database tables now require an explicit `db.`
-  prefix. Example:
-  ```prql no-eval
-  from db.my_table
-  join db.another_table (==some_id)
-  ```
-
 **Fixes**:
 
 **Documentation**:

README.md

@@ -26,7 +26,7 @@ since it compiles to SQL.
 PRQL can be as simple as:
 
 ```elm
-from db.tracks
+from tracks
 filter artist == "Bob Marley"                 # Each line transforms the previous result
 aggregate {                                   # `aggregate` reduces each column to a value
   plays    = sum plays,
@@ -38,7 +38,7 @@ aggregate {                                   # `aggregate` reduces each column
 Here's a fuller example of the language;
 
 ```elm
-from db.employees
+from employees
 filter start_date > @2021-01-01               # Clear date syntax
 derive {                                      # `derive` adds columns / variables
   gross_salary = salary + (tax ?? 0),         # Terse coalesce

lutra/bindings/python/README.md

@@ -16,7 +16,7 @@ module my_database {
     let artists <[{artist_id = int, name = text}]>
 }
 
-from db.my_database.artists
+from my_database.artists
 select {artist_id, text}
 into main
 ```

lutra/example-project/Project.prql

@@ -12,8 +12,8 @@ let favourite_artists = [
   {artist_id = 7, last_listen = @2023-05-16},
 ]
 
-favourite_artists
-join (chinook.artists | select {artist_id, name}) side:left (==artist_id)
+from favourite_artists
+join input = (from chinook.artists | select {artist_id, name}) side:left (==artist_id)
 derive aid = favourite_artists.artist_id * 2
-select {aid, name, favourite_artists.last_listen}
+select {aid, input.name, favourite_artists.last_listen}
 sort {-aid}

prqlc/bindings/dotnet/PrqlCompiler.Tests/CompilerTest.cs

@@ -17,7 +17,7 @@ public void ToCompile_Works()
         };
 
         // Act
-        var result = PrqlCompiler.Compile("from db.employees", options);
+        var result = PrqlCompiler.Compile("from employees", options);
 
         // Assert
         Assert.Equal(expected, result.Output);
@@ -28,7 +28,7 @@ public void TestOtherFunctions()
     {
         // Arrange
         var query = """
-            let a = (from db.employees | take 10)
+            let a = (from employees | take 10)
 
             from a | select {first_name}
             """;

prqlc/bindings/dotnet/README.md

@@ -27,7 +27,7 @@ var options = new PrqlCompilerOptions
     Format = false,
     SignatureComment = false,
 };
-var sql = PrqlCompiler.Compile("from db.employees", options);
+var sql = PrqlCompiler.Compile("from employees", options);
 Console.WriteLine(sql);
 ```
 

prqlc/bindings/elixir/README.md

@@ -15,11 +15,11 @@ end
 ## Basic Usage
 
 ```elixir
-  iex> PRQL.compile("from db.customers")
+  iex> PRQL.compile("from customers")
       {:ok, "SELECT\n  *\nFROM\n  customers\n\n-- Generated by PRQL compiler version 0.3.1 (https://prql-lang.org)\n"}
 
 
-  iex> PRQL.compile("from db.customers\ntake 10", dialect: :mssql)
+  iex> PRQL.compile("from customers\ntake 10", dialect: :mssql)
   {:ok, "SELECT\n  *\nFROM\n  customers\nORDER BY\n  (\n    SELECT\n      NULL\n  ) OFFSET 0 ROWS\nFETCH FIRST\n  10 ROWS ONLY\n\n-- Generated by PRQL compiler version 0.3.1 (https://prql-lang.org)\n"}
 ```
 

prqlc/bindings/elixir/lib/prql.ex

@@ -47,12 +47,12 @@ defmodule PRQL do
   ## Examples
 
   Using default `Generic` target:
-      iex> PRQL.compile("from db.customers", signature_comment: false)
+      iex> PRQL.compile("from customers", signature_comment: false)
       {:ok, "SELECT\n  *\nFROM\n  customers\n"}
 
 
   Using `MSSQL` target:
-      iex> PRQL.compile("from db.customers\ntake 10", target: :mssql, signature_comment: false)
+      iex> PRQL.compile("from customers\ntake 10", target: :mssql, signature_comment: false)
       {:ok, "SELECT\n  *\nFROM\n  customers\nORDER BY\n  (\n    SELECT\n      NULL\n  ) OFFSET 0 ROWS\nFETCH FIRST\n  10 ROWS ONLY\n"}
   """
   @spec compile(binary(), [compile_opts()]) :: {:ok, binary()} | {:error, binary()}

prqlc/bindings/elixir/test/prql_test.exs

@@ -5,7 +5,7 @@ defmodule PRQLTest do
   @compile_opts [signature_comment: false]
 
   test "compiles PRQL" do
-    prql_query = "from db.customers"
+    prql_query = "from customers"
 
     assert PRQL.compile(prql_query, @compile_opts) ==
              {:ok,

prqlc/bindings/java/java/src/test/java/org/prql/prql4j/PrqlCompilerTest.java

@@ -5,7 +5,7 @@
 public class PrqlCompilerTest {
     @Test
     public void compile() throws Exception {
-        String found = PrqlCompiler.toSql("from db.my_table", "sql.mysql", true, true);
+        String found = PrqlCompiler.toSql("from my_table", "sql.mysql", true, true);
 
         // remove signature
         found = found.substring(0, found.indexOf("\n\n--"));
@@ -19,6 +19,6 @@ public void compile() throws Exception {
 
     @Test(expected = Exception.class)
     public void compileWithError() throws Exception {
-       PrqlCompiler.toSql("from db.table | filter id >> 1", "sql.mysql", true, true);
+       PrqlCompiler.toSql("from table | filter id >> 1", "sql.mysql", true, true);
     }
 }