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Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type NullsOrder ¶
type NullsOrder int
NullsOrder represents how to handle NULL values in ordering. Different databases have different default behaviors for NULL values, so explicit specification ensures consistent behavior across databases.
const ( // NullsDefault uses database default behavior for NULLs. // WARNING: This may cause inconsistent behavior across different databases. // PostgreSQL: ASC=NULLS LAST, DESC=NULLS FIRST // MySQL/SQLite: ASC=NULLS FIRST, DESC=NULLS LAST // Oracle: ASC=NULLS LAST, DESC=NULLS FIRST. NullsDefault NullsOrder = iota // NullsFirst places NULL values before non-NULL values in the result set. NullsFirst // NullsLast places NULL values after non-NULL values in the result set. NullsLast )
func (NullsOrder) String ¶
func (no NullsOrder) String() string
String returns the string representation of NullsOrder.
type OrderDirection ¶
type OrderDirection int
OrderDirection represents the direction of ordering in SQL queries. It defines whether results should be sorted in ascending or descending order.
const ( // OrderAsc represents ascending order (A-Z, 0-9, oldest to newest). OrderAsc OrderDirection = iota // OrderDesc represents descending order (Z-A, 9-0, newest to oldest). OrderDesc )
func (OrderDirection) String ¶
func (od OrderDirection) String() string
String returns the string representation of OrderDirection.
type OrderSpec ¶
type OrderSpec struct {
// Column is the column name to order by.
// Should be empty if Expression is used instead.
Column string
// Direction specifies the ordering direction (ASC or DESC).
Direction OrderDirection
// NullsOrder specifies how to handle NULL values in the ordering.
// Use NullsDefault to rely on database defaults (not recommended for cross-database compatibility).
NullsOrder NullsOrder
}
OrderSpec represents a ordering specification for a single column. It encapsulates all the information needed to generate the ORDER BY clause for one item.
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