engine/mysql: Add support for LIKE (#1162)

Author: kyleconroy

internal/endtoend/testdata/pattern_matching/mysql/go/db.go

@@ -0,0 +1,4 @@
+CREATE TABLE pet (name text);
+
+-- name: PetsByName :many
+SELECT * FROM pet WHERE name LIKE ?;

internal/endtoend/testdata/pattern_matching/mysql/go/models.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "engine": "mysql",
+      "path": "go",
+      "name": "querytest",
+      "schema": "query.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/pattern_matching/mysql/go/query.sql.go

@@ -0,0 +1,4 @@
+CREATE TABLE pet (name text);
+
+-- name: PetsByName :many
+SELECT * FROM pet WHERE name LIKE $1;

internal/endtoend/testdata/pattern_matching/mysql/query.sql

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "engine": "postgresql",
+      "path": "go",
+      "name": "querytest",
+      "schema": "query.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/pattern_matching/mysql/sqlc.json

@@ -880,7 +880,16 @@ func (c *cc) convertPatternInExpr(n *pcast.PatternInExpr) ast.Node {
 }
 
 func (c *cc) convertPatternLikeExpr(n *pcast.PatternLikeExpr) ast.Node {
-	return todo(n)
+	return &ast.A_Expr{
+		Kind: ast.A_Expr_Kind(9),
+		Name: &ast.List{
+			Items: []ast.Node{
+				&ast.String{Str: "~~"},
+			},
+		},
+		Lexpr: c.convert(n.Expr),
+		Rexpr: c.convert(n.Pattern),
+	}
 }
 
 func (c *cc) convertPatternRegexpExpr(n *pcast.PatternRegexpExpr) ast.Node {