jackc/pgx · error

invalid array, expected '[' or '=' got %v

Error message

invalid array, expected '[' or '=' got %v

What it means

Error "invalid array, expected '[' or '=' got %v" thrown in jackc/pgx.

Source

Thrown at pgtype/array.go:129

		return nil, fmt.Errorf("invalid array: %w", err)
	}

	var explicitDimensions []ArrayDimension

	// Array has explicit dimensions
	if r == '[' {
		buf.UnreadRune()

		for {
			r, _, err = buf.ReadRune()
			if err != nil {
				return nil, fmt.Errorf("invalid array: %w", err)
			}

			if r == '=' {
				break
			} else if r != '[' {
				return nil, fmt.Errorf("invalid array, expected '[' or '=' got %v", r)
			}

			lower, err := arrayParseInteger(buf)
			if err != nil {
				return nil, fmt.Errorf("invalid array: %w", err)
			}

			r, _, err = buf.ReadRune()
			if err != nil {
				return nil, fmt.Errorf("invalid array: %w", err)
			}

			if r != ':' {
				return nil, fmt.Errorf("invalid array, expected ':' got %v", r)
			}

			upper, err := arrayParseInteger(buf)
			if err != nil {

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgtype/array.go:129 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/049a037bbcc03338.json. Report an issue: GitHub.