public override void VisitIfTableExists(StatementIfTableExists statementIfExists)
{
if (statementIfExists.ExprTable.DbSchema == null)
{
throw new SqExpressException("Table schema name is mandatory to check the table existence");
}
string?databaseName = statementIfExists.ExprTable.DbSchema.Database?.Name;
var tbl = new InformationSchemaTables(databaseName, Alias.Empty);
ExprBoolean condition = tbl.TableSchema == this.Options.MapSchema(statementIfExists.ExprTable.DbSchema.Schema.Name)
& tbl.TableName == statementIfExists.ExprTable.TableName.Name;
var test = SqQueryBuilder.SelectTopOne()
.From(tbl)
.Where(condition);
new StatementIf(SqQueryBuilder.Exists(test), statementIfExists.Statements, statementIfExists.ElseStatements).Accept(this);
}