42 lines
915 B
Go
42 lines
915 B
Go
package sqltemplate
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import (
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"errors"
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"strings"
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)
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// PostgreSQL is an implementation of Dialect for the PostgreSQL DMBS.
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var PostgreSQL = postgresql{
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rowLockingClauseMap: rowLockingClauseAll,
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argPlaceholderFunc: argFmtPositional,
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name: "postgres",
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}
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var _ Dialect = PostgreSQL
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// PostgreSQL-specific errors.
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var (
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ErrPostgreSQLUnsupportedIdent = errors.New("identifiers in PostgreSQL cannot contain the character with code zero")
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)
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type postgresql struct {
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standardIdent
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rowLockingClauseMap
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argPlaceholderFunc
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name
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}
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func (p postgresql) Ident(s string) (string, error) {
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// See:
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// https://www.postgresql.org/docs/current/sql-syntax-lexical.html
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if strings.IndexByte(s, 0) != -1 {
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return "", ErrPostgreSQLUnsupportedIdent
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}
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return p.standardIdent.Ident(s)
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}
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func (postgresql) CurrentEpoch() string {
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return "(EXTRACT(EPOCH FROM statement_timestamp()) * 1000000)::BIGINT"
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}
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