Method alterTable

internal/sql/catalog/table.go:186–222

(stmt *ast.AlterTableStmt)

}

func (c *Catalog) alterTable(stmt *ast.AlterTableStmt) error {
	if !isStmtImplemented(stmt) {
		return nil
	}
	_, table, err := c.getTable(stmt.Table)
	if err != nil {
		return checkMissing(err, stmt.MissingOk)
	}
	for _, item := range stmt.Cmds.Items {
		switch cmd := item.(type) {
		case *ast.AlterTableCmd:
			switch cmd.Subtype {
			case ast.AT_AddColumn:
				if err := c.addColumn(table, cmd); err != nil {
					return err
				}
			case ast.AT_AlterColumnType:
				if err := table.alterColumnType(cmd); err != nil {
					return err
				}
			case ast.AT_DropColumn:
				if err := c.dropColumn(table, cmd); err != nil {
					return err
				}
			case ast.AT_DropNotNull:
				if err := table.dropNotNull(cmd); err != nil {
					return err
				}
			case ast.AT_SetNotNull:
				if err := table.setNotNull(cmd); err != nil {
					return err
				}
			}
		}
	}
	return nil
}

func (c *Catalog) alterTableSetSchema(stmt *ast.AlterTableSetSchemaStmt) error {
	ns := stmt.Table.Schema