exposed-jdbc/src/main/kotlin/org/jetbrains/exposed/v1/jdbc/SchemaUtils.kt [85:122]:
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        if (tables.isEmpty()) return emptyList()

        val statements = ArrayList<String>()

        @OptIn(InternalApi::class)
        val existingTablesColumns = logTimeSpent(COLUMNS_LOG_MESSAGE, withLogs) {
            currentDialectMetadata.tableColumns(*tables)
        }

        @OptIn(InternalApi::class)
        val existingPrimaryKeys = logTimeSpent(PRIMARY_KEYS_LOG_MESSAGE, withLogs) {
            currentDialectMetadata.existingPrimaryKeys(*tables)
        }

        val dbSupportsAlterTableWithAddColumn = TransactionManager.current().db.supportsAlterTableWithAddColumn

        val isIncorrectType = { columnMetadata: ColumnMetadata, column: Column<*> ->
            currentDialectMetadata.areEquivalentColumnTypes(
                columnMetadata.sqlType,
                columnMetadata.jdbcType,
                column.columnType.sqlType()
            ).not()
        }

        @OptIn(InternalApi::class)
        for (table in tables) {
            table.mapMissingColumnStatementsTo(
                statements,
                existingTablesColumns[table].orEmpty(),
                existingPrimaryKeys[table],
                dbSupportsAlterTableWithAddColumn,
                isIncorrectType
            )
        }

        // While SQLite does allow some ALTER TABLE syntax, ADD/DROP CONSTRAINT is still not supported.
        // ForeignKeyConstraint statement builders would return empty list at lowest level, but this avoids metadata check entirely.
        @OptIn(InternalApi::class)
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exposed-r2dbc/src/main/kotlin/org/jetbrains/exposed/v1/r2dbc/SchemaUtils.kt [83:118]:
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        if (tables.isEmpty()) return emptyList()

        val statements = ArrayList<String>()

        @OptIn(InternalApi::class)
        val existingTablesColumns = logTimeSpent(COLUMNS_LOG_MESSAGE, withLogs) {
            currentDialectMetadata.tableColumns(*tables)
        }

        @OptIn(InternalApi::class)
        val existingPrimaryKeys = logTimeSpent(PRIMARY_KEYS_LOG_MESSAGE, withLogs) {
            currentDialectMetadata.existingPrimaryKeys(*tables)
        }

        val dbSupportsAlterTableWithAddColumn = TransactionManager.current().db.supportsAlterTableWithAddColumn

        val isIncorrectType = { columnMetadata: ColumnMetadata, column: Column<*> ->
            currentDialectMetadata.areEquivalentColumnTypes(
                columnMetadata.sqlType,
                columnMetadata.jdbcType,
                column.columnType.sqlType()
            ).not()
        }

        @OptIn(InternalApi::class)
        for (table in tables) {
            table.mapMissingColumnStatementsTo(
                statements,
                existingTablesColumns[table].orEmpty(),
                existingPrimaryKeys[table],
                dbSupportsAlterTableWithAddColumn,
                isIncorrectType
            )
        }

        @OptIn(InternalApi::class)
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