/**
 * Cross-dialect SQL type-classification predicates.
 *
 * Single source of truth for "is this SQL type name a string / boolean / date
 * / etc." across the MJ stack. Built by unioning each registered SQLDialect's
 * type-name getters (see `SQLDialect.BooleanTypeNames`, `StringTypeNames`,
 * etc.), so adding a new dialect requires zero changes here — just register
 * its dialect class with the same getters and the predicates pick it up.
 *
 * Usage:
 * ```typescript
 * import { IsBooleanSQLType, IsStringSQLType } from '@memberjunction/sql-dialect';
 *
 * if (IsStringSQLType(field.Type)) {
 *   // safe to LOWER() and string-compare
 * }
 * ```
 *
 * Why this exists: prior call sites hand-coded long switch/case lists of SQL
 * type names in 5+ files (graphql_server_codegen.ts, MJCore util.ts,
 * MetadataSync sync-engine.ts, PushService.ts, …). Each list was subtly
 * different — some included `bpchar`, some forgot `character varying`, some
 * had `citext` only after a PG bug — and adding a new column type required
 * grepping every list. Now there is one place per category, owned by the
 * dialect that defines the type.
 */
/** True if `typeName` is a boolean type in any registered dialect (`bit`, `boolean`, `bool`). */
export declare function IsBooleanSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a variable / fixed-length character / text type. Excludes `uuid`. */
export declare function IsStringSQLType(typeName: string | null | undefined): boolean;
/**
 * True if `typeName` is a **fixed-width** / space-padded character type
 * (SQL Server `char`/`nchar`, PostgreSQL `char`/`character`/`bpchar`).
 *
 * Use to decide whether to rtrim values returned by the DB: fixed-width
 * types right-pad with spaces up to the declared length and return that
 * padding in result sets, which causes spurious dirty-flagging if the
 * application-side value is the logical (un-padded) form.
 */
export declare function IsFixedWidthStringSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a date / time / timestamp type. */
export declare function IsDateSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is an integer type (any width, including auto-increment / rowversion). */
export declare function IsIntegerSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a floating-point or fixed-precision decimal type. */
export declare function IsFloatSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a UUID type (`uniqueidentifier`, `uuid`). */
export declare function IsUuidSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a binary blob type (`varbinary`, `image`, `bytea`). */
export declare function IsBinarySQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a JSON / XML structured-document type. */
export declare function IsJsonSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a fixed-precision currency type (`money`, `smallmoney`). */
export declare function IsCurrencySQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is an interval / duration type (`interval` — PG only currently). */
export declare function IsIntervalSQLType(typeName: string | null | undefined): boolean;
/** True if `typeName` is a network address type (`inet`, `cidr`, …). */
export declare function IsNetworkSQLType(typeName: string | null | undefined): boolean;
/**
 * Convenience aggregate: any "numeric" type — integer, float, or currency.
 * Use when the call site doesn't care about the precision/scale distinction.
 */
export declare function IsNumericSQLType(typeName: string | null | undefined): boolean;
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