feat: add mssql support

Author: John Kraal

README.md

@@ -52,10 +52,10 @@ func main() {
 }
 ```
 
-The `WithDialect()` option accepts: `schema.MySQL`, `schema.Postgres`, or
-`schema.SQLite`. These dialects all use only `database/sql` calls, so you may
-have success with other databases which are SQL-compatible with the above
-dialects.
+The `WithDialect()` option accepts: `schema.MySQL`, `schema.Postgres`,
+`schema.SQLite` or `schema.MSSQL`. These dialects all use only `database/sql`
+calls, so you may have success with other databases which are SQL-compatible
+with the above dialects.
 
 You can also provide your own custom `Dialect`. See `dialect.go` for the
 definition of the `Dialect` interface, and the optional `Locker` interface. Note
@@ -114,7 +114,7 @@ additional databases or feature enhancements / bug fixes.
 - [x] PostgreSQL (database/sql driver only, see [adlio/pgxschema](https://github.com/adlio/pgxschema) if you use `jack/pgx`)
 - [x] SQLite (thanks [kalafut](https://github.com/kalafut)!)
 - [x] MySQL / MariaDB
-- [ ] SQL Server (open a Pull Request)
+- [x] SQL Server
 - [ ] CockroachDB, Redshift, Snowflake, etc (open a Pull Request)
 
 ## Package Opinions
@@ -174,7 +174,7 @@ there's a good chance a different schema migration tool is more appropriate.
 - [x] Enhancements and documentation to facilitate asset embedding via go:embed
 - [ ] Add a `Validate()` method to allow checking migration names for
       consistency and to detect problematic changes in the migrations list.
-- [ ] SQL Server support
+- [x] SQL Server support
 
 ## Version History
 

go.mod

@@ -16,14 +16,18 @@ require (
 	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
 	github.com/cenkalti/backoff v2.2.1+incompatible // indirect
 	github.com/containerd/continuity v0.2.1 // indirect
+	github.com/denisenkom/go-mssqldb v0.12.0 // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
+	github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe // indirect
+	github.com/golang-sql/sqlexp v0.0.0-20170517235910-f1bb20e5a188 // indirect
 	github.com/gotestyourself/gotestyourself v2.2.0+incompatible // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.0.3 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
+	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 // indirect
 	golang.org/x/net v0.0.0-20211208012354-db4efeb81f4b // indirect
 	golang.org/x/sys v0.0.0-20211205182925-97ca703d548d // indirect
 	gotest.tools v2.2.0+incompatible // indirect

go.sum

@@ -1,5 +1,8 @@
 bazil.org/fuse v0.0.0-20200407214033-5883e5a4b512/go.mod h1:FbcW6z/2VytnFDhZfumh8Ss8zxHE6qpMP5sHTRe0EaM=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v0.19.0/go.mod h1:h6H6c8enJmmocHUbLiiGY6sx7f9i+X3m1CHdd5c6Rdw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v0.11.0/go.mod h1:HcM1YX14R7CJcghJGOYCgdezslRSVzqwLf/q+4Y2r/0=
+github.com/Azure/azure-sdk-for-go/sdk/internal v0.7.0/go.mod h1:yqy467j36fJxcRV2TzfVZ1pCb5vxm4BtZPUdYWe/Xo8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
@@ -34,10 +37,14 @@ github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfc
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cyphar/filepath-securejoin v0.2.2/go.mod h1:FpkQEhXnPnOthhzymB7CGsFk2G9VLXONKD9G7QGMM+4=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/denisenkom/go-mssqldb v0.12.0 h1:VtrkII767ttSPNRfFekePK3sctr+joXgO58stqQbtUA=
+github.com/denisenkom/go-mssqldb v0.12.0/go.mod h1:iiK0YP1ZeepvmBQk/QpLEhhTNJgfzrpArPY/aFvc9yU=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
+github.com/dnaeon/go-vcr v1.2.0/go.mod h1:R4UdLID7HZT3taECzJs4YgbbH6PIGXB6W/sc5OLb6RQ=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
@@ -55,6 +62,10 @@ github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/me
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
+github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe h1:lXe2qZdvpiX5WZkZR4hgp4KJVfY3nMkvmwbVkpv1rVY=
+github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe/go.mod h1:8vg3r2VgvsThLBIFL93Qb5yWzgyZWhEmBwUJWevAkK0=
+github.com/golang-sql/sqlexp v0.0.0-20170517235910-f1bb20e5a188 h1:+eHOFJl1BaXrQxKX+T06f78590z4qA2ZzBTqahsKSE4=
+github.com/golang-sql/sqlexp v0.0.0-20170517235910-f1bb20e5a188/go.mod h1:vXjM/+wXQnTPR4KqTKDgJukSZ6amVRtWMPEjE6sQoK8=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
@@ -103,6 +114,7 @@ github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/moby/sys/mountinfo v0.4.1/go.mod h1:rEr8tzG/lsIZHBtN/JjGG+LMYx9eXgW2JI+6q0qou+A=
+github.com/modocache/gover v0.0.0-20171022184752-b58185e213c5/go.mod h1:caMODM3PzxT8aQXRPkAt8xlV/e7d7w8GM5g0fa5F0D8=
 github.com/mrunalp/fileutils v0.5.0/go.mod h1:M1WthSahJixYnrXQl/DFQuteStB1weuxD2QJNHXfbSQ=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
@@ -117,6 +129,7 @@ github.com/opencontainers/selinux v1.8.2/go.mod h1:MUIHuUEvKB1wtJjQdOyYRgOnLD2xA
 github.com/ory/dockertest v3.3.5+incompatible h1:iLLK6SQwIhcbrG783Dghaaa3WPzGc+4Emza6EbVUUGA=
 github.com/ory/dockertest v3.3.5+incompatible/go.mod h1:1vX4m9wsvi00u5bseYwXaSnhNrne+V0E6LAcBILJdPs=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4/go.mod h1:4OwLy04Bl9Ef3GJJCoec+30X3LQs/0/m4HFRt/2LUSA=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -147,9 +160,11 @@ github.com/spf13/cobra v1.0.0/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHN
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/tv42/httpunix v0.0.0-20191220191345-2ba4b9c3382c/go.mod h1:hzIxponao9Kjc7aWznkXaL4U4TWaDSs8zcsY4Ka08nM=
@@ -165,14 +180,18 @@ go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 h1:pLI5jrR7OSLijeIDcmRxNmw2api+jEfxLoykJVice/E=
+golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210610132358-84b48f89b13b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211208012354-db4efeb81f4b h1:MWaHNqZy3KTpuTMAGvv+Kw+ylsEpmyJZizz1dqxnu28=
 golang.org/x/net v0.0.0-20211208012354-db4efeb81f4b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -185,6 +204,7 @@ golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191115151921-52ab43148777/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -226,6 +246,10 @@ gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

main_test.go

@@ -55,7 +55,7 @@ func TestMain(m *testing.M) {
 }
 
 func withEachDialect(t *testing.T, f func(t *testing.T, d Dialect)) {
-	dialects := []Dialect{Postgres, MySQL, SQLite}
+	dialects := []Dialect{Postgres, MySQL, SQLite, MSSQL}
 	for _, dialect := range dialects {
 		t.Run(fmt.Sprintf("%T", dialect), func(t *testing.T) {
 			f(t, dialect)

mssql.go

@@ -0,0 +1,101 @@
+package schema
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+	"unicode"
+)
+
+// MSSQL is the dialect for MS SQL-compatible databases
+var MSSQL = mssqlDialect{}
+
+type mssqlDialect struct{}
+
+func (s mssqlDialect) QuotedTableName(schemaName, tableName string) string {
+	if schemaName == "" {
+		return s.QuotedIdent(tableName)
+	}
+	return fmt.Sprintf("%s.%s", s.QuotedIdent(schemaName), s.QuotedIdent(tableName))
+}
+
+func (s mssqlDialect) QuotedIdent(ident string) string {
+	if ident == "" {
+		return ""
+	}
+
+	var sb strings.Builder
+	sb.WriteRune('[')
+	for _, r := range ident {
+		switch {
+		case unicode.IsSpace(r):
+			continue
+		case r == ';':
+			continue
+		case r == ']':
+			sb.WriteRune(r)
+			sb.WriteRune(r)
+		default:
+			sb.WriteRune(r)
+		}
+	}
+	sb.WriteRune(']')
+
+	return sb.String()
+}
+
+func (s mssqlDialect) CreateMigrationsTable(ctx context.Context, tx Queryer, tableName string) error {
+	unquotedTableName := tableName[1 : len(tableName)-1]
+	query := fmt.Sprintf(`
+		IF NOT EXISTS (SELECT * FROM Sysobjects WHERE NAME='%s' AND XTYPE='U')
+			CREATE TABLE %s (
+				id VARCHAR(255) NOT NULL,
+				checksum VARCHAR(32) NOT NULL DEFAULT '',
+				execution_time_in_millis INTEGER NOT NULL DEFAULT 0,
+				applied_at DATETIMEOFFSET
+			)
+	`, unquotedTableName, tableName)
+	_, err := tx.ExecContext(ctx, query)
+	return err
+}
+
+func (s mssqlDialect) GetAppliedMigrations(ctx context.Context, tx Queryer, tableName string) (migrations []*AppliedMigration, err error) {
+	migrations = make([]*AppliedMigration, 0)
+
+	query := fmt.Sprintf(`
+		SELECT id, checksum, execution_time_in_millis, applied_at
+		FROM %s ORDER BY id ASC
+	`, tableName)
+
+	rows, err := tx.QueryContext(ctx, query)
+	if err != nil {
+		return migrations, err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		migration := AppliedMigration{}
+		err = rows.Scan(&migration.ID, &migration.Checksum, &migration.ExecutionTimeInMillis, &migration.AppliedAt)
+		if err != nil {
+			err = fmt.Errorf("failed to GetAppliedMigrations. Did somebody change the structure of the %s table?: %w", tableName, err)
+			return migrations, err
+		}
+		migration.AppliedAt = migration.AppliedAt.In(time.Local)
+		migrations = append(migrations, &migration)
+	}
+
+	return migrations, err
+}
+
+func (s mssqlDialect) InsertAppliedMigration(ctx context.Context, tx Queryer, tableName string, am *AppliedMigration) error {
+	query := fmt.Sprintf(`
+		INSERT INTO %s
+		( id, checksum, execution_time_in_millis, applied_at )
+		VALUES
+		( @p1, @p2, @p3, @p4 )`,
+		tableName,
+	)
+	_, err := tx.ExecContext(ctx, query, am.ID, am.MD5(), am.ExecutionTimeInMillis, am.AppliedAt)
+	return err
+}

mssql_test.go

@@ -0,0 +1,59 @@
+package schema
+
+import (
+	"testing"
+
+	// MSSQL Driver
+	_ "github.com/denisenkom/go-mssqldb"
+)
+
+// Interface verification that MSSQL is a valid Dialect
+var (
+	_ Dialect = MSSQL
+)
+
+func TestMSSQLQuotedTableName(t *testing.T) {
+	type qtnTest struct {
+		schema, table string
+		expected      string
+	}
+
+	tests := []qtnTest{
+		{"public", "ta[ble", `[public].[ta[ble]`},
+		{"pu[b]lic", "ta[ble", `[pu[b]]lic].[ta[ble]`},
+		{"tempdb", "users", `[tempdb].[users]`},
+		{"schema.with.dot", "table.with.dot", `[schema.with.dot].[table.with.dot]`},
+		{`public"`, `"; DROP TABLE users`, `[public"].["DROPTABLEusers]`},
+	}
+
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.expected, func(t *testing.T) {
+			actual := MSSQL.QuotedTableName(tc.schema, tc.table)
+			if actual != tc.expected {
+				t.Errorf("Expected %s, got %s", tc.expected, actual)
+			}
+		})
+	}
+
+}
+
+func TestMSSQLQuotedIdent(t *testing.T) {
+	table := map[string]string{
+		"":                    "",
+		"MY_TABLE":            "[MY_TABLE]",
+		"users_roles":         `[users_roles]`,
+		"table.with.dot":      `[table.with.dot]`,
+		`table"with"quotes`:   `[table"with"quotes]`,
+		"table[with]brackets": "[table[with]]brackets]",
+	}
+
+	for ident, expected := range table {
+		t.Run(expected, func(t *testing.T) {
+			actual := MSSQL.QuotedIdent(ident)
+			if expected != actual {
+				t.Errorf("Expected %s, got %s", expected, actual)
+			}
+		})
+	}
+}

schema_test.go

@@ -25,10 +25,11 @@ const (
 	PostgresDriverName = "postgres"
 	SQLiteDriverName   = "sqlite3"
 	MySQLDriverName    = "mysql"
+	MSSQLDriverName    = "sqlserver"
 )
 
 // TestDBs holds all of the specific database instances against which tests
-// will run. The connectDB test helper refere ces the keys of this map, and
+// will run. The connectDB test helper references the keys of this map, and
 // the withEachDB helper runs tests against every database defined here.
 var TestDBs map[string]*TestDB = map[string]*TestDB{
 	"postgres:latest": {
@@ -53,4 +54,10 @@ var TestDBs map[string]*TestDB = map[string]*TestDB{
 		DockerRepo: "mariadb",
 		DockerTag:  "latest",
 	},
+	"mssql:latest": {
+		Dialect:    MSSQL,
+		Driver:     MSSQLDriverName,
+		DockerRepo: "mcr.microsoft.com/mssql/server",
+		DockerTag:  "2019-latest",
+	},
 }