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24 lines
915 B
Go
24 lines
915 B
Go
package format
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// Dialect provides SQL dialect-specific formatting behavior
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type Dialect interface {
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// QuoteIdent returns a quoted identifier if it needs quoting
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// (e.g., reserved words, mixed case identifiers)
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QuoteIdent(s string) string
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// TypeName returns the SQL type name for the given namespace and name.
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// This handles dialect-specific type name mappings (e.g., pg_catalog.int4 -> integer)
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TypeName(ns, name string) string
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// Param returns the placeholder for the parameter with this number.
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// numbered reports that the author wrote the number out (SQLite's ?2,
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// where a bare ? takes the next index), so engines with both forms can
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// keep the one that was written.
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// PostgreSQL uses $1, $2, etc. MySQL uses ?
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Param(n int, numbered bool) string
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// Cast formats a type cast expression.
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// PostgreSQL uses expr::type, MySQL uses CAST(expr AS type)
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Cast(arg, typeName string) string
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}
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