Merge pull request #2689 from dolthub/zachmu/show-table-schema

Support for schema name in SHOW TABLE statements

Author: zachmu

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/dolthub/go-icu-regex v0.0.0-20240916130659-0118adc6b662
 	github.com/dolthub/jsonpath v0.0.2-0.20240227200619-19675ab05c71
 	github.com/dolthub/sqllogictest/go v0.0.0-20201107003712-816f3ae12d81
-	github.com/dolthub/vitess v0.0.0-20241002230050-2c2ea65cf324
+	github.com/dolthub/vitess v0.0.0-20241009160728-54c0746cbff7
 	github.com/go-kit/kit v0.10.0
 	github.com/go-sql-driver/mysql v1.7.2-0.20231213112541-0004702b931d
 	github.com/gocraft/dbr/v2 v2.7.2

go.sum

@@ -58,8 +58,8 @@ github.com/dolthub/jsonpath v0.0.2-0.20240227200619-19675ab05c71 h1:bMGS25NWAGTE
 github.com/dolthub/jsonpath v0.0.2-0.20240227200619-19675ab05c71/go.mod h1:2/2zjLQ/JOOSbbSboojeg+cAwcRV0fDLzIiWch/lhqI=
 github.com/dolthub/sqllogictest/go v0.0.0-20201107003712-816f3ae12d81 h1:7/v8q9XGFa6q5Ap4Z/OhNkAMBaK5YeuEzwJt+NZdhiE=
 github.com/dolthub/sqllogictest/go v0.0.0-20201107003712-816f3ae12d81/go.mod h1:siLfyv2c92W1eN/R4QqG/+RjjX5W2+gCTRjZxBjI3TY=
-github.com/dolthub/vitess v0.0.0-20241002230050-2c2ea65cf324 h1:OO1XBXmBM3HBJfbwEwsj8h0m/bwYKIgFgGN8d+S+vrw=
-github.com/dolthub/vitess v0.0.0-20241002230050-2c2ea65cf324/go.mod h1:uBvlRluuL+SbEWTCZ68o0xvsdYZER3CEG/35INdzfJM=
+github.com/dolthub/vitess v0.0.0-20241009160728-54c0746cbff7 h1:mepdzTqvr0ZAbyOEsdgLg/nJ2qQzLJIwHD7xityHzz4=
+github.com/dolthub/vitess v0.0.0-20241009160728-54c0746cbff7/go.mod h1:uBvlRluuL+SbEWTCZ68o0xvsdYZER3CEG/35INdzfJM=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
 github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=

sql/planbuilder/show.go

@@ -612,10 +612,12 @@ func (b *Builder) buildShowAllTables(inScope *scope, s *ast.Show) (outScope *sco
 	outScope = inScope.push()
 
 	var dbName string
+	var schemaName string
 	var filter sql.Expression
 	var asOf sql.Expression
 	if s.ShowTablesOpt != nil {
 		dbName = s.ShowTablesOpt.DbName
+		schemaName = s.ShowTablesOpt.SchemaName
 		if s.ShowTablesOpt.AsOf != nil {
 			asOf = b.buildAsOfExpr(inScope, s.ShowTablesOpt.AsOf)
 		}
@@ -626,6 +628,25 @@ func (b *Builder) buildShowAllTables(inScope *scope, s *ast.Show) (outScope *sco
 	}
 	db := b.resolveDb(dbName)
 
+	if schemaName != "" {
+		sdb, ok := db.(sql.SchemaDatabase)
+		if !ok {
+			err := sql.ErrDatabaseSchemasNotSupported.New(db.Name())
+			b.handleErr(err)
+		}
+
+		s, ok, err := sdb.GetSchema(b.ctx, schemaName)
+		if err != nil {
+			b.handleErr(err)
+		}
+		if !ok {
+			err := sql.ErrDatabaseSchemaNotFound.New(schemaName)
+			b.handleErr(err)
+		}
+
+		db = s
+	}
+
 	b.qFlags.Set(sql.QFlagSetDatabase)
 	showTabs := plan.NewShowTables(db, s.Full, asOf)
 	for _, c := range showTabs.Schema() {