func getInsertPKValues(pkColumnNumbers []int, rowList sqlparser.Values, tableInfo *schema.Table) (pkValues []interface{}, err error) {
pkValues = make([]interface{}, len(pkColumnNumbers))
for index, columnNumber := range pkColumnNumbers {
if columnNumber == -1 {
pkValues[index] = tableInfo.GetPKColumn(index).Default
continue
}
values := make([]interface{}, len(rowList))
for j := 0; j < len(rowList); j++ {
if _, ok := rowList[j].(*sqlparser.Subquery); ok {
return nil, errors.New("row subquery not supported for inserts")
}
row := rowList[j].(sqlparser.ValTuple)
if columnNumber >= len(row) {
return nil, errors.New("column count doesn't match value count")
}
node := row[columnNumber]
if !sqlparser.IsValue(node) {
log.Warningf("insert is too complex %v", node)
return nil, nil
}
var err error
values[j], err = sqlparser.AsInterface(node)
if err != nil {
return nil, err
}
}
if len(values) == 1 {
pkValues[index] = values[0]
} else {
pkValues[index] = values
}
}
return pkValues, nil
}
func analyzeSelectExprs(exprs sqlparser.SelectExprs, table *schema.Table) (selects []int, err error) {
selects = make([]int, 0, len(exprs))
for _, expr := range exprs {
switch expr := expr.(type) {
case *sqlparser.StarExpr:
// Append all columns.
for colIndex := range table.Columns {
selects = append(selects, colIndex)
}
case *sqlparser.NonStarExpr:
name := sqlparser.GetColName(expr.Expr)
if name == "" {
// Not a simple column name.
return nil, nil
}
colIndex := table.FindColumn(name)
if colIndex == -1 {
return nil, fmt.Errorf("column %s not found in table %s", name, table.Name)
}
selects = append(selects, colIndex)
default:
panic("unreachable")
}
}
return selects, nil
}