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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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) | ||
| } | ||
| }) | ||
| } | ||
| } |
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